Version 1.5 : increase 160 vocabularies. Version 1.6: add display timer. Version 1.7: fix timer display size error. Version 1.8: fix timer error. Version 1.9: fix timer reset error. Version 2.0: increase another 80 vocabularies. Version 2.1: increase another 160 vocabularies. Version 2.1: Smooth timer clock. Version 2.2: Fix timer display for HD for 7".