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Human Factors Considerations in the Design
Digitizers and Input Tablets
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accuracy acoustic advantages alphanumeric keyboard applications array axis binary button bytes capacitive character characteristics chord keyboard circuit command computer graphics converter coordinate CSRB cursor cursor control cursor positioning data entry data tablets detected detector digitizer tablet Disadvantages displacement joystick display electronic elements encoder ergonomic error example feedback finger force joystick frequency function graphics tablets Greenstein grid host computer Human Factors Society inches input devices input system interaction interface keypad keystrokes light pen linear measured mechanical membrane keyboard menu mice mode motion mouse move movement operation optical output performance potentiometers pressed pulse QWERTY QWERTY layout reference relative resistance resolution rotation scanners selection serial signal specific speech recognition speed standard stylus Summagraphics surface switch target task tion touch screen touch screen devices touch tablet trackball transducer typically typing variable velocity vocabulary voice voltage wire word