Computer Devices

1. Output

1.1. monitor

1.1.1. pixel or picture element

1.1.2. resolution refers to clarity and crispness of picture

1.1.3. CRT screens - bulky

1.2. LCD screens-flat screen

1.2.1. takes up less space on computer desk

1.2.1.1. cost more and can be messed up easier in a busy classroom

1.3. Printer

1.3.1. Laser

1.3.2. Ink jet

1.3.3. resolution measured in dpi (dots per inch)

1.3.4. multipurpose devices or better known as all-in-one printer

2. Input

2.1. Keyboard

2.1.1. set up as a typewriter

2.2. Mouse

2.2.1. trackball

2.2.1.1. helps if there is not a lot of space to move a mouse around, because most of the movement is done by the ball

2.2.2. touch pad -laptop