Input

1. Pointing Devices

1.1. Mouse

1.1.1. Click

1.1.2. Double Click

1.1.3. Right Click

1.1.4. Drag and Drop

1.1.5. Point

1.1.6. Triple‐click

1.2. Track ball

1.3. Track Point

1.4. Touch pad

1.5. Joy Stick

2. Pen-Based System

2.1. Light pen

2.2. Digitizing tablet

2.3. Data Scanning Devices

2.4. Magnetic Ink Character Recognition – MICR

2.5. Bar Code Reader

2.6. Scanner

2.6.1. Handhelp scanner

2.6.2. Sheet-fed scanner

2.6.3. Scan head

2.6.4. Flatbed scanner

2.7. Optical Character Recognition – OCR

2.8. Optical Mark Reader-OMR

2.9. Digital Camera

2.10. Digital Video

3. Keyed Device

3.1. Keyboard

3.1.1. Wired Keyboards

3.1.1.1. Character Keys

3.1.1.2. Control Keys

3.1.1.3. Function Keys

3.1.1.4. Numeric Keys

3.1.2. Wireless Keyboards

3.1.2.1. Numeric Keys

3.1.2.2. Function Keys

3.1.2.3. Control Keys

3.1.2.4. Character Keys

3.2.  insertion point

3.3. Ergonomics

4. Touch-Sensitive Screen

4.1. Touch Screen