Chapter 9. Interaction Devices. Keyboard Layouts. QWERTY layout 1870 Christopher Latham Sholes good mechanical design and a clever placement of the letters that slowed down the users enough that key jamming was infrequent
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Pointing devices are applicable in six types of interaction tasks:
Tablet PCs and Mobile Devices:
“Open the pod bay doors, HAL.”
“I’m sorry Dave, but I can’t do that.”
- The most frustrated computer user in history
Usage characteristics distinguish displays: