# Description

Opamp Calculator for electronic engineers, hobbyists and students.

Feature list:

- Inverting Amplifier

- Non inverting Amplifier

- Differential Amplifier

- Inverting Summing Amplifier

- Summing Amplifier

LIKE and Share us:

Google+: http://gplus.to/androiddesignnl

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# Reviews

Helpfulness

Newest

Rating

Helpfulness

All Versions

All Versions

Latest Version

4.2

188 total

5 95

4 51

3 27

2 7

1 8

Christopher Lenon

Output voltage The output voltage is incorrect when the configuration is set up to make the output rail. The voltage would only reach the rail voltage minus 1.4 volts. So you would be looking at an output of about positive or negative 13.6 volts. Other than that, it is a decent app.

TUHIN SUBHRA Das

Fine It's very good app for biggner & graduation students .Special thanks to the builders.

User reviews

Great tool Thank you to the developer for making an excellent program free

Review deleted

# What's New

All the action buttons are moved to a second action bar at the bottom of the screen.

# Additional information

Updated

April 4, 2015

Size

2.1M

Installs

10,000 - 50,000

Current Version

2.62

Requires Android

3.2 and up

Content Rating

Everyone

Permissions

Report

Flag as inappropriate Offered By

android-design.nl

Developer

# Similar

## Calculator Plus

USA TODAY named Calculator Plus among its "25 Essential Apps", calling it the "handy calculator app that's garnered great user ratings"

I'm Calculator Plus - the perfect calculator for Android. I'm easy to use and beautifully designed to do things better than your phone or handheld calculator ever did.

I'm big, easy to read, and I love saving you time and effort. I remember everything you calculate, and let you review it anytime, making me perfect for shopping, doing homework, balancing checkbooks, or even helping with taxes. And if you need to quit and go do something else, I'll have it all waiting for you when you come back. You'll never need to type the same calculation twice again.

I'm attractive and effective and I make great use of your big, beautiful display:

- I show your calculations in clear, elegant type that's easy to read, with commas just where they should be

- You'll never lose track of where you are in a calculation - I show you exactly what's happening at all times

- I remember everything, so you can take a break, then come back later and pick up where you left off

- You can use backspace anytime to correct a simple mistake, instead of starting over

- Use memory to keep a running total you can actually see

- Swipe memory keys aside if you need more advanced math functions

- My percentage key shows exactly what it did, so you're not left confused

- My intuitive, lovable design makes it simple to do everyday calculations on your phone or tablet

Let Calculator Plus on your phone or tablet finally put that handheld calculator to rest.

Calculator Plus (C) 2015 Digitalchemy, LLC

## Handy Construction Calculators

Android's Most Trusted Construction Calculator

70+ Professional Grade, Premium Tools

Full US or METRIC modes - Inputs and Outputs

70+ Professional Grade, Premium Tools

Full US or METRIC modes - Inputs and Outputs

Google Play Featured - DIY App

Featured by AT&T, Vodafone

15,000+ customers, Top 100 Productivity App

"Best in Class" reviews -

The Best Android Construction Mobile Apps - getapp.com

3 Killer Android Home Improvement Apps - appshappens.com

HammerTime - poptechjam.com

Precision Inputs and Outputs

-US (Feet Inches Fraction)

-METRIC (Meter Millimeter)

What makes us better?

*US or METRIC modes - one simple setting lets you switch between modes with localized materials, size choices, inputs, outputs and rounding

*Configurable US inch fraction output precision (1/32, 1/16, 1/8, 1/4)

*Easy to use

*Flexible inputs/outputs - advanced options, no need for mental math

*Experience - Since 2009 built with the input of hundreds of professionals

*Professional grade calculator - for the Pro, Contractor, Builder, Estimator, Handyman, DIY, Home Improvement or Carpenter

*Diagrams help master the inputs and outputs - no guesswork

*Built-in results sharing - text, email, copy/paste and more

*Clean and easy to use - no ads, crazy designs or other annoyances

*Consistently updated and supported

*We appreciate our customers. Have an idea or special need? Send us a note anytime!

Satisfaction Guaranteed!

Below is a list of our 70+ construction calculators along with a few highlights to show the advanced features, inputs and outputs that we think make us the best for your construction projects.

= ROOFING

* Attic Ventilation - Ventilation, Intake & Exhaust

* Advanced Rafters - Overhang, Ridge, Bird's Mouth, Common

* Simple Rafters

* Roofing Calculator - Gables, Drip Edge, Ridge Caps, Bundles, Underlayment

* Sheeting

= FRAMING

* Balusters - Rake Angle, Centers, Spacing, Running Measurements

* Board Feet

* Floor Joists - OC Spacing, Running Measurements

* Wall Framing Calculator - Stud spacing, Studs & Plates, Advanced Algorithm

* Insulation - Batts & Blown

* Siding - Gables

* Squaring

* Stair Calculator - Constrain Run, Adjust Riser Results Realtime, Running Stringer Points

= WALL, FLOOR & CEILING

* Carpet & Vinyl Flooring

* Tongue & Groove Flooring

* Crown Molding

* Deck Boards - Diagonal & 90 Degree Layouts

* Demolition Waste - Building Type

* Drop Ceiling - Even Border Construction, All Materials

* Drywall Calculator - Room Dimension or Area, Ceiling, All Materials

* Finish Areas - Walls, Floor, Ceiling

* Paint - # Coats, Wall Type

* Tile Calculator - Field and Border, Diagonal or 90 Degree Layouts

= ELECTRICAL CALCULATOR

* Amps/Watts/Volts Solver

* Amps Required for Circuit

= FOUNDATION

* Backfill - Volume & Weight and Slope

* Excavation and Backfill - Specific excavated (with swell) and backfill (with compaction) material selection. Includes calculators specific to Basements, Footings and Trenches.

* Grade - Run/Drop or Slope

* Rebar Calculator - Beams & Columns with variable sizing and ties, Continuous footings, Weight.

= PAVING & CONCRETE

* Round/Rectangle Concrete Calculator - Total Volume, Premix and Portland Options, Rebar

* Post Holes - Per Column & Total Calculations

* Asphalt Calculator - Variable Base Weight

* Paving Calculator - Variable Base, Subbase, Compaction

* Wire Mesh

= MASONRY

* Brick & Block Wall Calculator - Bricks, Courses, w/wo Mortar

= AREA, VOLUME & ANGLE

* Acreage

* Arc

* Arc Radius

* Cone

* Circle

* Cube

* Cylinder

* Pyramid

* Rectangle

* Rise/Run/Angle

* Sphere

* Trapezoid

* Triangle

= MEASUREMENT

* Tape Measure Feet Inches Calculator

* GPS Measure (experimental) - Measure one point to another

* Drill Bit & Pilot Hole Conversion

= LANDSCAPING

* Aggregate Calculator - Rectangle/Round - Variable Materials & Densities

* Drainage - Rational Equation

= BUSINESS

* Sq/Linear Ft Construction Cost Estimator

* Discount

* Margin & Gross Profit - Customer Price, Markup Profit, Project Overhead, Company Overhead

* Overtime - Regular, Overtime & Gross Pay

* Sales Tax

* Task Time

* Travel Time

## Calculator Widget

A customizable calculator widget for your homescreen.

Features Include:

★ Themes, currently 4 to choose from but suggestions are welcome for new ones.

★ Large (4x4) and small (3x3) widget sizes

★ Button to toggle between number and function keys

★ Customizable text colors

★ Edit Mode for advanced input

★ and more

-More Information-

There is an F.A.Q. at the bottom of the settings screen that comes up when placing a widget. If you have a question that is not covered there, use the Contact Support button at the bottom of the F.A.Q. to contact me.

-Edit Mode-

This widget can handle more types of input than there is room to put buttons for. To overcome this, you can tap on the display to go into Edit Mode. From here you can copy/paste text, use your hardware or software keyboard, and input functions that are not included in the widget buttons.

For example, the widget contains a button for tangent but not for arctangent. To use arctangent, you can tap on the display and use your keyboard to type "atan". You can then continue to type in edit mode or click done to return to the widget and finish typing there.

## RealCalc Scientific Calculator

Android's #1 Scientific Calculator. A fully featured scientific calculator which looks and operates like the real thing.

Looking for fractions? Degrees/minutes/seconds? Landscape mode? You need RealCalc Plus. See elsewhere on this page for the link, or select 'Upgrade' from the RealCalc menu.

RealCalc includes the following features:

* Traditional algebraic or RPN operation

* Unit conversions

* Physical constants table

* Percentages

* Result history

* 10 memories

* Binary, octal, and hexadecimal (can be enabled in Settings)

* Trig functions in degrees, radians or grads

* Scientific, engineering and fixed-point display modes

* 7-segment, dot-matrix or standard font display

* Configurable digit grouping and decimal point

* External keyboard support

* Full built-in help

* A complete lack of advertising

RealCalc Plus contains all these features, plus:

* Fraction calculations and conversion to/from decimal

* Degrees/minutes/seconds calculations and conversion

* Landscape mode

* 12-digit display

* Extended internal precision (32-digit)

* User-customizable unit conversions

* User-customizable constants

* New RPN styles (buffered-entry, XYZT rolling stack)

* Samsung multi-window support with drag & drop.

If you find RealCalc useful, please consider purchasing RealCalc Plus to support further development. Thank you.

FAQ:

* If you want data size conversions in multiples of 1024, use kibibytes, mebibytes, gibibytes, etc - see en.wikipedia.org/wiki/Kibibyte.

* If you can't find HEX, BIN or OCT modes, go to Menu > Settings and make sure that 'Radix Modes' is checked.

* If the percent key appears to give wrong answers, make sure you are pressing '=' at the end, e.g. '25 + 10 % =' will give 27.5.

* If sin/cos/tan functions don't give the answer you are expecting, make sure you are in the correct angle mode. Degrees, radians and grads are supported, indicated by DEG, RAD, GRAD in the display. Use the DRG key to change mode.

* If any of the digit keys are disabled, or the decimal point doesn't work, or you have answers with letters in, or basic arithmetic appears to be wrong, then you are in binary, octal or hexadecimal mode. Press DEC to return to decimal operation. If you don't need these modes, please make sure that 'Radix Modes' is disabled in the settings.

Please read the help for more information.

## Calculator

Appsys

1

A simple calculator, the display of which indicates expressions and gives easy operation for editing.

The calculator PanecalST includes features below:

*Four arithmetic operations, root, percentages, and tax calculations

*Calculations with parentheses

*Memory, M+, M-, MR, MC

*Scroll up/down lines

*Easy editing by using a cursor operation

*Cut, copy, and paste

*Expressions history and answer history

*Configurable grouping separator and decimal point

Four arithmetic operations:

1 + 2 - 3 × 4 ÷ 5 = 0.6

Root:

√( 2 × 2 ) = 2

Percentages:

500 + 20% = 600

500 - 20% = 400

500 × 20% = 100

100 ÷ 500% = 20

Tax calculation:

500 Tax+= 525

525 Tax-= 500

Parentheses:

( 1 + 2 ) × ( 3 + 4 ) = 21

( 1 + 2 ) ( 3 + 4 ) ( 5 + 6 ) = 231

Grouping separator and decimal point:

123,456,789.1 + 0.02 = 123,456,789.12

123.456.789,1 + 0,02 = 123.456.789,12

(Depends on setting)

[Disclaimer]

APPSYS does not accept responsibility for any loss which may arise from reliance on the software or materials published on this site.

## Calculator

Two calculators in one. Scientific/Algebraic/Fraction or simple desk calculator. Ideal for everyday, office, school, technical and scientific studies.

Choose what you prefer for each moment

STANDARD CALCULATOR

Simple calculator with the same functionality as a classical desk calculator

-Square root

-Memory

- k feature

-Percent Calculation: add, subtract, mark-up/mark-down, % of increase, % against.

SCIENTIFIC/ALGEBRAIC/FRACTION CALCULATOR

-Square/cube/xth root

-Memory

-k feature

-Parenthesis

-Exponents

-Pi

-Percent Calculations: add, subtract, % against, % of increase,

-Log, In, Inverse Log, Exponential

Fractions:

-Fraction<>Decimal, Decimal<>Fraction

-Improper Fraction<>Mixed Number

-Simplification

Trigonometry:

-Sin, Cos, Tan, & Inverse

-Hyperbolic Functions

-Converts between DEG, RAD, GRAD

Statistics:

-Mean, Sum, Sum of squares, # Elements

-Standard Deviation (sample or population)

Additional Math Functions

-DMS<>DD Conversions

-Polar<>Rectangular Conversions

-nPr, cPr, x!

-Random Number Generator

-Scientific Notation

NOTE: Read the help for additional information

COMMON FEATURES

-Back key

-Portrait or landscape layout

-Copy to clipboard feature

-Dark or clear background available

-Icon widget

-MultiWindow for Samsung devices (where available)

## Handyman Calculator

Kalyani

1

Complete construction calculator with simple inputs. The app for construction! Reduce Waste, Save Time and Money! Well tested by half a million contractors and home owners! Top 100 productivity app. Give it a try!

Calculate materials, track time spent on projects, and save calculations to a notepad.

Listed in "This Old House" magazine "The TOH Top 100: Best New Home Products 2013": http://www.thisoldhouse.com/toh/photos/0,,20753086_30049018,00.html

Bob Vila newsletter: http://www.bobvila.com/blogs/renovation-app/

http://www.bobvila.com/best-app-for-home-design-inspiration/47970-new-notable-10-digital-tools-to-help-you-diy-your-dream-home/slideshows?bv=wn#!9

Real Estate Radio: http://calltoni.com/listen-now-jakes-tech-corner-with-noah-ickowit-9-7-13/

Time Tracking tool

To-do list

Feet and Inches Calculator

Woodworker Calculators

Electrical calculators

Metric units arithmetic

Feet,inches TO Metre,cm,mm Converter

Fraction Calculator

Fraction Simplification

Square Footage Calculator

Cubic Footage Calculator

Lumber, Concrete and Asphalt calculator.

Length, Area and Weight Converter.

Temperature Converter

Density Converter

Feet and Inches Calculator

Board Foot Calculator

Board feet and Linear feet Converter

Lumber Weight Calculator

Deck Baluster Calculator

Deck Board Calculator

Spacing Calculator

Wall Framing Calculator

Firewood Calculator and BTU Chart

Lumber Log Volume calculator

Concrete, Brick, Block, Mortar and Sand Calculations

Excavation Calculator

Asphalt Volume calculator

Aggregate Calculator

Drywall calculator

Crown Molding Calculator

Carpet Calculator

Laminate Flooring Calculator

Wall Paper Calculator

Tile Calculator

Paint Calculator

Stairs Calculator

Arc Length Calculator

Air Conditioning and Heater Calculator

Roof Calculator

Roof Pitch Angle Chart

Rafter Length Calc

Rebar Weight Chart

Mulch and Topsoil Calculator

Patio Pavers Calculator

Brick Calculator

Plants Calculator.

Wood Fence Calculator

Grass Seed Calculator

Sod Calculator

Blown Insulation R value Calculator

Golden Ratio(Golden mean) Calculator

Speed, Distance and Time Calculator

Rain water Collection Calculator

Loan Calculator

Speed and Velocity Unit Converter

Water Flow Rate Calculator.

Tank Capacity Calculator

Ohm's Law Calculator

Resistor Color Code Calculator

Resistance Conversion

Power Calculator

Amps to Watts Calculator

Capacitance, Frequency, Inductance and Resistance Calculator

Voltage Drop and divider Calculator

Wire Size Calculator

Power Wash Calculator

Sine Bar Calculator

Wrench Conversion Chart

Decimal and Fraction Converter

Diagonal calculator

Slope Calculator

Right Triangle Calculator

Rectangle Calculator

Square Calculator

Circle Calculator

Polygon Calculator

Fraction to Percentage Calculator

Angle Converter

Power Converter

Energy Converter

Torque Converter

Force Units Converter

Liquid Units Converter

Pressure Units Converter

Magnetic Flux Converter

Volume FlowRate Units Converter

Degrees, Minutes, Seconds and Decimal Degrees Conversion

BMI Calculator

Miles Per Gallon (MPG) Calculator

Kilometers Per Litres Calculator

Gas and Oil mixture Ratio Calculator

Discount Calculator

Date Duration Calculator

Tip Calculator

Graphing Calculator

PCB Trace Width Calculator

World Clock

Shipment Density Calculator

Currency Converter

Oil Drilling Calculators:

Mud Pump Output(PO)

Pressure Gradient

Pressure to Mud Weight Conv.

Specific Gravity Calc.

Equivalent Circulating Density

Maximum Allowable Mud Weight

Annular Velocity

Hydraulic Horsepower(HHP)

Formation Temperature (FT)

Buoyancy factor

Refrigerant Pressure Temperature Chart

Percent Grade to Degrees Converter

Percent Grade Calculator

Mowing Calculator

Electric Charge Converter

Fuel Consumption Converter

Enthalpy Conversion

Led Resistor Calculator including Series and Parallel

Frequency, Wavelength and Energy Converter

Milling Machine calcs

Tap and Drill Chart

Woodturners Segment Calculator

Lumens to Watts Calculator

Metal detector

## Electrical Calculator

Navaile

1

Electrical Calculator is designed for electricians, its based on the US NEC 2008, 2011.

Features

- Wire Size & Ampacity

- Grounding Tables

- Motor FLC Tables

- Voltage Drop

- Box Fill

- Ohm's/Ohms Law

Under Development

- Conduit Fill

- Electrical Utility Jurisdiction based on GPS location

This is a BETA version, please email us

if you come across any errors.

## Calculator - Simple & Stylish

A simple, stylish calculator.

Supports percent calculation, constant calculation, repeat and exponential, and interest calculation. Features memory functionality and the ability to display and save formulas.

All calculation results are saved, and past formulas can be viewed at any time.

Anything entered is saved when the app quits, so the app resumes where you left off.

The widget can be used to perform the app functions on the home screen.

Percent calculations make calculating sales tax easy.

[Calculation Results]

1+2×3=9

1+2×3=7

*Can be changed through Settings.

[Percent Calculation]

500×5%25

500÷5%10000

500-5%475

500+5%525

[Constant Calculation]

Constant calculations follow the Casio-style.

After inputting the desired number, tap the desired operator twice to set it as the constant.

Ex) When you want to constantly add 100

100++

1000=1100

2000=2100

[Exponential Calculation]

5××=25

=125

=625

[Compound Interest Calculation]

Ex) When calculating the yearly maturity on 0.5% (after tax) of $10,000 deposited yearly.

1.005××

10000=10050

=10100.25

=10150.751

This calculator does not support function operations.

Uses Sharp-style calculation formulas.

* Some use Casio-style.

* Calculator is free, however ads can be disabled by purchasing the Hide Ads Plugin.

[Main Functions]

- Usable from the home widget

- Saves entries even when closed mid-calculation

- Press and hold the result to copy to clipboard

- Input up to 12 digits

- Usable portrait or landscape

- Tap the DEL key to delete 1 character

- Hold the DEL key to clear the entry

- Tap the C/CE key to clear the entry

- Hold the C/CE to clear everything

- Designed for tablets

- Displays history

- Saves history

- Customizable themes

- Customizable fonts

- Customizable layouts

- Customizable display

- Set the rounding of decimals

- Set the rounding place of decimals

- Vibrates when the widget is tapped

- Constant calculation (Casio-style)

Made in Japan.

© woodsmall inc.

## Daily Calculator Free - Simple

Simple calculator.

Made with practicality in mind, Daily Calculator is a simple and easy calculator app, ideal for your everyday use.

It is easy to use with large buttons, clean and stylish design, and provides the basic functionalities most people need for daily calculations.

For example, Daily Calculator is perfect in situations such as adding up receipts, calculating taxes or discounts when shopping, doing homework study for school, some calculation at your workplace, or even when you calculate a tip at restaurants.

*This is a free version of Daily Calculator, which displays ad at the bottom of the screen. Ad-free version is also available.

[Features]

- Beautiful, simple and stylish design

- Easy to use with large buttons to minimize errors

- Option to choose from 3 keypad layouts (Standard / Stylish / Ergonomic)

- Option to choose from 12 themes (Material - Indigo, Red, Green, Amber, Pink, Brown / Original - Black, White, Blue, Green, Red, Yellow)

- Option to turn on/off vibration on touch

- Option to turn on/off memory buttons

- Displays calculation history

- Displays calculated expression

- Percentage calculation available

- Backspace button to delete the last digit to correct a simple mistake

- Backspace button can also clear all by pressing and holding it

- Copies calculated result to clipboard by touching the display area

- Supports both portrait and landscape mode

- Displays operator symbols during calculation

- Displays your calculations with thousand separators to make it easy to read

If you find a bug or have any suggestion for improvement, please feel free to contact me at: support@tricolorcat.com

You can also check the news and updates for Daily Calculator on my website: http://www.tricolorcat.com

Thank you!

-----------------------------------------------

Daily Calculator is introduced on Intellectuapp.com as one of the best calculator apps:

http://www.intellectuapp.com/2013/03/top-5-best-calculator-apps.html

[Update history]

v1.4.2 (2014/09/25)

- Revised the icon design

v1.4.1 (2014/09/06)

- Added a function to copy the result to clipboard by touching the display area

- Modified some behavior of percentage calculation

- Updated to support Chinese/Russian languages

v1.4.0 (2014/09/02)

- Added sub-display area to show the calculated expression

- Updated to support Roboto font for earlier versions of OS

- Added "Share" option

- Added "Contact by email" option

v1.3.0 (2014/08/24)

- Added percentage calculation button

- Added "Standard" keypad layout

v1.2.3 (2014/08/23)

- Updated to support Hindi language

- Modified ads to be discreet and match its color with the selected theme

v1.2.1 (2014/08/17)

- Updated to support Japanese/German/Spanish/French languages

v1.2.0 (2014/08/09)

- Added backspace button(delete the last digit / press and hold to clear all)

- Added a feature to display operator symbols

v1.1.0 (2014/08/06)

- Changed icon

- Added option to turn on/off vibration on touch

v1.0.2 (2014/08/04)

- Revised to support lower versions of OS

v1.0.1 (2014/08/03)

- Added Feedback link to Settings menu

[Daily Calculator is reviewed on these sites]

- GizmodoEditor.com (English): http://gizmoeditor.blogspot.ca/2014/08/calculator-for-android-keeps-it-simple.html

- Intellectuapp.com (English): http://www.intellectuapp.com/2014/11/app-of-day-daily-calculator-free-simple.html

- Appliv (Japanese): http://android.app-liv.jp/001741373

- AndroidView (Japanese): http://androidview.jp/archives/10544

- Androider.jp (Japanese): https://androider.jp/official/app/0e098538a05b28c7

- GetJar (English): http://www.getjar.mobi/mobile/830937/Daily-Calculator-Simple-and-Easy-for-google-nexus-one

- AndroidPIT (English): http://www.androidpit.com/app/com.tricolorcat.calculator

- AppBrain (English): http://www.appbrain.com/app/daily-calculator-free-simple/com.tricolorcat.calculator

- FileDir.com (English): http://filedir.com/android/productivity/daily-calculator-free-simple-10692508.html

## Calculator Mem Lite

Simple calculator with history (virtual tape, a.k.a. ticker tape style) keeping track of all completed operations. Many ways to export results (email, external file of SD card, clipboard...)

New: Multi-window mode for Samsung Galaxy Note!

Limitations of this Free release: This free release displays ADs and miss some features like ability to recompute the whole history list when one history item is modified...

Fully customizable: font size, widget mode, show/hide memory buttons... Make it yours!

Online tutorials: http://www.youtube.com/playlist?list=PL6A4F38BB80BDC248

Learn tips & tricks from the official page: https://www.facebook.com/pages/Calculator-Mem/559361640797712

Follow us on Twitter: http://www.twitter.com/amwebexpert

Some of the available features:

- Percentage usefull feature for computing tips and taxes

- Tablet support (even support for multiple windows mode on the Galaxy Note tablet)

- Adjustable results history panel height

- Haptic feedbacks can be turned On / Off (see preferences)

- Always round amounts by setting number of decimals to 2

- Customizable larger fonts for elderly and visually impaired

- Calculation history and memory (select result, formula, copy to clipboard...)

- Digit grouping

- Landscape mode

- Can be used as an office calculator mode

- No Ads displayed / No internet access

- More widget templates and color choices

- You can change the height of the history panel

- Calculation history always saved (survive device reboot)

- And more...

"Recommended by Appgovideo.com (http://www.appgovideo.com/)"

Advanced functions:

M+, M-, MR, MS...

rand()

x^y

sum(x1;x2;... xn)

avg(x1;x2;... xn)

etc.

## Pretty Calculator

Let's make math fun and stylish! Add, subtract, divide, and multiply with this sassy calculator app!

Combining basic calculator functions and colorful design, solving math equations will never be boring!

Choose from four different themes: floral, sparkly jewels, animal prints, and gradient red. Change from

one design to another by swiping the screen in any direction!

Who thought math could be this fashionable?

Features:

♥ Perfect for addition, subtraction, multiplication, and division

♥ Simple layout and chic designs

♥ Swipe function to change themes

♥ Four available themes: Animal Prints, Floral, Gradient Red and Sparkly Jewels

♥ Includes basic calculator functions like percent, memory buttons, and negative/positive button

## Simple Calculator

Simple Calculator is the perfect calculator for your smartphone! It is very light (only a few Kilobytes) and very easy to use just like every handheld calculator!!

- It has support for big numbers (up to 20 digits) and also has memory that is kept intact even if you quit the calculator and go do something else. When you come back, everything will still be there.

- It have the same look and fell in every device size and screen resolution!

- You can also use the DEL key anytime to correct a simple mistake, instead of starting over.

- Use memory to keep a running total you can see.

- You can see all its operations and advanced math functions in the same screen!

- Its advanced math operations are: percentage, square root, power of two, and power of n.

- It also have the ANS button, that returns the last answer you got so you can continue your calculations.

## Colorful calculator

I can two calculations with up and down.

You can change the design.

It is not suited to difficult calculation because it is ease of use-oriented.

You can change the design.

It is not suited to difficult calculation because it is ease of use-oriented.

(Example of the use of two-screen calculator)

If you want to compare.

Once when re-calculated calculated from for confirmation.

Save a number, when you use it to call later.

## Calculator L

Simple Calculator with material design.

Beautiful and intuitive interface with mesmerizing animations.

Keypad optimized for tablets and phones of all sizes.

Beautiful and intuitive interface with mesmerizing animations.

Keypad optimized for tablets and phones of all sizes.

Basic operation like addition, subtraction, multiplication and division.

Trigonometric functions

Exponent

Logarithm

Declaimer: It is based on AOSP sources of android calculator.

## Calculator

7th Gear

1

Calculator is an easy to use, beautifully packaged calculator that includes both a standard and scientific calculator

Our versatile calculator app allows you to:

• Choose between a basic calculator or scientific calculator with more than 30 scientific operations

• View and edit a history of your calculations on the History Tab

• View an equation of your current calculations

• Calculate with accuracy to more than 75 significant digits

• Use parenthesis and nested parenthesis in your calculations

We wrote Calculator to be the perfect calculator for budding math students and professionals alike.

# More from developer

## RF & Microwave Toolbox lite

High frequency electronics toolbox for Microwave engineers, RF professionals, EMC technicians, radio-amateur,students, astronomer and electronic hobbyists.

LIKE and Share us:

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Google+: http://gplus.to/androiddesignnl

This lite version includes the following tools:

1) PI and T attenuator

2) Reflectometer (VSWR, Return loss)

3) Mismatch error limits (VSWR, Return loss)

4) Parallel LCR impedance/resonance

5) capacitor impedance

6) lowpass filter

7) Capacitor plate calculator

8) Power and Voltage Converter

9) Coupler directivity calculator.

Tools in full version includes;

1.Noise floor (Kelvin,dBm)

2.Amplifier cascade (NF, Gain, P1db, OIP2, OIP3)

3.Radar equation (2-way path loss)

4.Radio equation (1-way path loss)

5.Power and voltage converter (W,dBm,V,dBµV)

6.Field intensity and power density converter (W/m2, V/m, A/m, Tesla, Gauss,dBm, W)

7.Mismatch error limits (VSWR, Return loss)

8.Reflectometer (VSWR, Return loss)

9.Mitered Bend

10.Divider and Couplers (Wilkinson, Rat race, Branchline , microstrip and lumped)

11.Balanced and und balanced PI and T attenuator

12.Skin depth (DC and AC resistance)

13.PCB Trace calculator (impedance/dimensions)

- Microstrip

- Stripline

- Coplanar waveguide

- Coupled microstrip

- Coupled stripline

14.Image rejection (amplitude and phase imbalance)

15.Mixer harmonics (up and down convertion)

16.Helical antenna

17.Peak to RMS (peak, RMS, average, CF)

18.Air Core Inductor Inductance

19.Parallel plate Capacitor

20.PI and T attenuator

21.Ohm's Law

22.Parallel LCR impedance/resonance

23.Series LCR impedance/resonance

24.Inductor impedance

25.Capacitance impedance

26.Antenna temperature (Kelvin)

27.Radar Cross Section (RCS) calculator (Sphere,Cylinder, flat plate, corners, dBsm)

28.Noise Figure Y-Factor Methode

29.EMC (EIRP, ERP, dBµV/m)

30.Noise figure converter (dB, linear, Kelvin)

31.Frequency Band Designations (IEEE Radar band, Military Radar band, Radio band, Satellite, Wavefuide band)

32.Resistor color code (reverse lookup, 3 to 6 band)

33.Filter Design (Butterworth, Chebyshev, prototype):

- Low pass

- High pass filter

- Band pass

- Band stop filter

34.µ-Filter Design (microstrip, stripline):

- Interchange of Circuits

- Kuroda's Identities

- Series and Shunt Circuit lines

- Coupled line Circuits

- Stepped Impedance

35) PCB Trace Width and Clearance Calculator

36) Series and Parallel component (R, L and C) calculations.

37) Reverse Series and Parallel resistor calculations.

38) Inductor Color Code Calculator.

39) Capacitor Charge Calculator.

40) Led Resistor Calculator.

41) Voltage Divider Calculator.

42) Thin Film Resistor Calculator (Trim and non Trim)

43) Opamp Calculator

44) Lumped Balun Calculator

45) Wavelength calculator

46) L-Network Matching Calculator

47) LCR Parallel - Series Conversion Calculator

48) PI & T-Network Matching Calculator

49) Coax Line Calculator

50) Twisted pair Calculator

51) Lumped-Distributed Equivalences calculator

52) Fresnel Calculator

53) Inductor Charge Calculator.

54) Heat Sink temperature calculator

55) Thermal via calculator

56) Coupler directivity calculator

57) Cavity resonance calculator

## Resistor Color Code

This is by far the fastest and most easy Resistor Color Code calculator.

Calculate resistor value by selecting the band colors.

Or Reverse:

Enter a resistor value and find the color code.

If the value is not an standard E-series value the two nearest values are shown.

* 3, 4, 5 and 6 band resistor support *

If the resistor has a standard E-series value then also the E-series (E3, E6,E12, E24, E48, E96, E192) number will be shown.

App for resistor SMD code: http://play.google.com/store/apps/details?id=mwave.resistor_smd_code

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## RF & Microwave Toolbox

High frequency electronics toolbox for Microwave designers, RF professionals, EMC technicians, radio-amateur, students, astronomer and electronic hobbyists.

If the reviews are not visible please use this link:

http://play.google.com/store/apps/details?id=mwave.mwcalculator_pro&hl=en

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With the following tools:

(This Toolbox contains also all the tools of the Analog ElectronicToolbox, PCB Trace Calculator and Resistor Color Code Calculator.)

1) Noise floor (Kelvin,dBm)

2) Amplifier cascade (NF, Gain, P1db, OIP2, OIP3)

3) Radar equation (2-way path loss)

4) Radio equation (1-way path loss)

5) Power and voltage converter (W,dBm,V,dBµV)

6) Field intensity and power density converter (W/m2, V/m, A/m, Tesla, Gauss,dBm, W)

7) Mismatch error limits (VSWR, Return loss)

8) Reflectometer (VSWR, Return loss)

9) Mitered Bend

10) Divider and Couplers (Wilkinson, Rat race, Branchline , microstrip and lumped)

11) Balanced and und balanced PI and T attenuator

12) Skin depth (DC and AC resistance)

13) PCB Trace calculator (impedance/dimensions)

- Microstrip

- Stripline

- Coplanar waveguide

- Coupled microstrip

- Coupled stripline

14) Image rejection (amplitude and phase imbalance)

15) Mixer harmonics (up and down convertion)

16) Helical antenna

17) Peak to RMS (peak, RMS, average, CF)

18) Air Core Inductor Inductance

19) Parallel plate Capacitor

20) PI and T attenuator

21) Ohm's Law

22) Parallel LCR impedance/resonance

23) Series LCR impedance/resonance

24) Inductor impedance

25) Capacitance impedance

26) Antenna temperature (Kelvin)

27) Radar Cross Section (RCS) calculator (Sphere,Cylinder, flat plate, corners, dBsm)

28) Noise Figure Y-Factor Methode

29) EMC (EIRP, ERP, dBµV/m)

30) Noise figure converter (dB, linear, Kelvin)

31) Frequency Band Designations (IEEE Radar band, Military Radar band, Radio band, Satellite, Waveguide band)

32) Resistor color code (reverse lookup, 3 to 6 band)

33) Filter Design (Butterworth, Chebyshev, prototype):

- Low pass

- High pass filter

- Band pass

- Band stop filter

34) µ-Filter Design (microstrip, stripline):

- Interchange of Circuits

- Kuroda's Identities

- Series and Shunt Circuit lines

- Coupled line Circuits

- Stepped Impedance

35) PCB Trace Width and Clearance Calculator

36) Series and Parallel component (R, L and C) calculations.

37) Reverse Series and Parallel resistor calculations.

38) Inductor Color Code Calculator.

39) Capacitor Charge Calculator.

40) Led Resistor Calculator.

41) Voltage Divider Calculator.

42) Thin Film Resistor Calculator (Trim and non Trim)

43) Opamp Calculator

44) Lumped Balun Calculator

45) Wavelength calculator

46) L-Network Matching Calculator

47) LCR Parallel - Series Conversion Calculator

48) PI & T-Network Matching Calculator

49) Coax Line Calculator

50) Twisted pair Calculator

51) Lumped-Distributed Equivalences calculator

52) Fresnel Calculator

53) Inductor Charge Calculator.

54) Heat Sink temperature calculator

55) Thermal via calculator

56) Coupler directivity calculator

57) Cavity resonance calculator

58) Resistor SMD Code calculator

59) Waveguide calculator

60) Lumped phase shifter calculator

61) Series section impedance matching transformers

- Series section transformer

- Quarter Wave transformer

- Bramham (12th wave) transformer

- Regier transformer

62) Power (dBm) add calculator

63) Doherty PA calculator

Please let me know if there are Electronic and RF & Microwave related tools that you would like to be added.

You can send me an email for a feature request.

## SWR Calculator

Coupler Directivity Calculator is used to calculate the minimum and maximum values of Reflection Coefficient, VSWR, Return Loss and Mismatch Loss.

The Directivity Error Calculator shows the accuracy of a reflection measurement of unknown impedance. It bases its readings on the directivity of the coupler used for the measurement. It is also a convenient way to convert a reflection coefficient to an equivalent standing wave ratio (SWR), return loss, or mismatch loss.

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## Resistor SMD code calculator

This Resistor SMD code calculator will decode 4 code types:

Standard 3 digit code that can include:

- R to indicate a decimal point

- M to indicate a decimal point for milliohms (Current sensing SMDs)

- "underline" to indicate that the value is in milliohms (Current sensing SMDs)

Standard 4 digit code that can include “R” to indicate a decimal point.

EIA-96 1% code with a number in the range 01 to 96, followed by a letter

2, 5, and 10% code with a letter, followed by a numbers in the range 01 to 60

## Wind Turbine Estimator beta

Wind Turbine estimator.

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Calculate:

- Rated output power (kw)

- Annual Energy Output (kwh/year)

- Cost of wind power (k€/kwh)

- Annual Profit (k€)

- Return on Investment (%)

- Break even Point (Years)

- CO2 reduction (Tonnes/Year)

Input:

- Rotor size

- Wind Turbine cost (k€/kw)

- Wind turbine revenue (€/kwh)

- Turbine efficiency

- Generator efficiency

- Mechanical efficiency

- Capacity Factor (%)

- Land lease cost (%)

- Operations and Maintenance cost (%)

## Ohm's Law Calculator

Ohm's Law Calculator for electronic engineers, hobbyists and students.

Feature list:

1) Ohm's Law

2) Resistor Color Code calculator.

3 )Series and Parallel component (R, L and C) calculations.

4 )Reverse Series and Parallel resistor calculations.

Also checkout the RF & Microwave Toolbox or the Analog Toolbox.

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## Black Screen Burn-in protector

This app gives you only a black screen. It is useless for normal android devices.

It works as a burn-in protector for plasma and Amoled Screens.

On some TV Sticks (mk808) you cannot dim the TV screen and the screen time out is also not working.

And if you only want to play only music (Spotify) then it could be possible that the screen will burn-in.

Tap Anywhere on the screen to exit the app.

## Personel Alarm AD (beta)

This Personal Alarm app can be used for different situations.

Seniors can use this app to alert, in case of emergency, one or more family members.

People on the move can also use this app because the Alarm message contains also the location.

Seniors can use this app to alert, in case of emergency, one or more family members.

People on the move can also use this app because the Alarm message contains also the location.

A big advantage of this app is that there is no internet connection required.

Extra options:

Auto answer phone: Phone will auto answer phone calls from the contact persons.

Alarm shake activation: The alarm can be activated by shaking the phone.

## Yet Another Flashlight (YAF)

Wy Another Flashlight?

This is the most clean and simple Flashlight app with no advertising and no permissions other then accessing the flashlight of the camera.

With two simple buttons you can choose between using the camera's flashlight or the screen as light source.

The app is also useable when then the screen is locked.

Optional you can choose a screen color and change the screen intensity.