The document discusses various input and output devices used in computer systems. It describes keyboards, mice, touchscreens, and other pointing devices used for input. It also covers display technologies like CRT and LCD screens, as well as emerging technologies like digital paper. The document explores how these devices enable different styles of interaction and discusses some of the technical considerations around devices like resolution, color depth, and health impacts of older display technologies.

1. chapter 2 the computer

8. Richer interaction sensors and devices everywhere

9. text entry devices keyboards (QWERTY et al.) chord keyboards, phone pads handwriting, speech

12. QWERTY (ctd)

20. positioning, pointing and drawing mouse, touchpad trackballs, joysticks etc. touch screens, tablets eyegaze, cursors

34. display devices bitmap screens (CRT & LCD) large & situated displays digital paper

47. virtual reality and 3D interaction positioning in 3D space moving and grasping seeing 3D (helmets and caves)

49. pitch, yaw and roll pitch yaw roll

54. physical controls, sensors etc. special displays and gauges sound, touch, feel, smell physical controls environmental and bio-sensing

61. paper: printing and scanning print technology fonts, page description, WYSIWYG scanning, OCR

74. memory short term and long term speed, capacity, compression formats, access

84. processing and networks finite speed (but also Moore’s law) limits of interaction networked computing