Calculator capable of recovering cleared values

Calculator device for enabling a keypad to function as both...

Calculator for determining sizes and spans of wooden...

Calorie control apparatus with voice recognition

Card driven electronic apparatus

Combination exerciser gripper and calculator

Data editable statistic calculator, and the related data...

Data entry method and apparatus

Desk calculator capable of easy checking and trustworthy...

Detachable computer structure

Device for obtaining positional information

Easily graspable numerical expression display apparatus

Electronic computing apparatus having arithmetic processing...

Fraction display apparatus

Gaze-based secure keypad entry system

General-purpose functional circuit and general-purpose unit...

Hand-held computerized data collection terminal

Hand-held data collection system with stylus input

Handheld computational device

Handheld computational device having securing elements