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Simulation of typing process on different layouts with emphasis on distance and motion issues

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3 Author(s)
El-Azhary, I. ; Dept. of Electr. Eng., King Saud Univ., Riyadh, Saudi Arabia ; Azmi, A.M. ; Suliman, S.M.A.

A new computer simulation for a typist is described. This is unique in the sense that it is based on decisions made by the typist during the look-ahead process, takes care of hand overlapping during typing, and handles simultaneously the shifted and unshifted characters. The simulation is applied to several layouts (two of which are suggested by the authors). It was found that the reassignment of characters to keys on the QWERTY layout yields insignificant tangible improvement on typing productivity in terms of gross words per minute. However, regarding its effect on the distance travelled by the typist's fingers and the number of motions, considerable tangible improvement on typing process is realizable in terms of ease of operation and possibly less hand fatigue.

Published in:

Systems, Man and Cybernetics, IEEE Transactions on  (Volume:SMC-15 ,  Issue: 3 )