116 C Survey#1

What is Computer System?

• A complete, working computer. The computer system includes not only the computer, but also any software and peripheral devices that are necessary to make the computer function. Every computer system, for example, requires an operating system.

What are the Components of Computer System?

Input

• Text input devices
  • Keyboard - a device to input text and characters by depressing buttons (referred to as keys), similar to a typewriter. The most common English-language key layout is the QWERTY layout.
• Pointing devices
  • Mouse - a pointing device that detects two dimensional motion relative to its supporting surface.
  • Trackball - a pointing device consisting of an exposed protruding ball housed in a socket that detects rotation about two axes.

• Gaming devices
  • Joystick - a general control device that consists of a handheld stick that pivots around one end, to detect angles in two or three dimensions.
  • Gamepad - a general handheld game controller that relies on the digits (especially thumbs) to provide input.
  • Game controller - a specific type of controller specialized for certain gaming purposes.
• Image, Video input devices
  • Image scanner - a device that provides input by analyzing images, printed text, handwriting, or an object.
  • Webcam - a low resolution video camera used to provide visual input that can be easily transferred over the internet.
• Audio input devices
  • Microphone - an acoustic sensor that provides input by converting sound into electrical signals

Output

• Image, Video output devices
  • Printer
  • Monitor
• Audio output devices
  • Speakers
  • Headset