Four devices are ev aluated with respect to how ra pid ly they can be used to sclccl text on a CRT di splay. The mouse is found to be fastest on all counts and also to have the lowest error ra les.lt is shown Ihat varia tions in positioning time with the mouse and joystick are accounled ror by Fills's Law. In the case of the mouse. Ihe measured Fins's Law slope oonSlanl is close to that found in other eye-hand tasks leading to the conclusion thai positioning time wi th this device is almost the mini mal achievable_ Positionin~ lime for key devices is shown 10 he rropo rli on~l 10 Ihe number of keystrokes which must be Iyped.
First, in REF , the mouse is replaced by a joystick placed in the middle of the keyboard.
Evaluation of Mouse, Rare-Controlled Isometric Joystick, Step Keys, and Text Keys for Text Selection on a CRT
Ergonomics
Computer Science