Types of Computers

Text §

1. Keyboard
   1. QWERTY
   2. DVORAK
   3. Special
   4. wearable
2. Phone T9
3. HandWriting
4. Speech
5. calculator

Positioning Pointing Drawing §

• Mouse
• Touchpad
• Eyegaze
• Control Keys: ← ↑ → ↓
• 电视遥控器

Display §

• bitmap
• 阴极射线管 CRT
  • 有辐射不安全, 特别是怀孕的
  • Cathude Ray Tube
• Liquid Crystal Displays (LCD)
  • 轻便, 无辐射, 小巧, 便携

VR & 3D §

Physical Control Sensor §