OCR Computer Science: Computer Systems

Hardware
1. Physical components.
  1. keyboard
  2. mouse
  3. monitor
  4. anything you can touch
Software
1. the progams
  1. operating systems
  2. application software
    1. e.g. spreadsheet software
    2. word processing software
      1. never say 'word' or 'PowerPoint' in the exam
Input
1. devices are used to put data into the computer
  1. keyboards
  2. mice
Output
1. devices allow data to be sent beyond the computer, usually to a human user
  1. monitors
  2. speakers
  3. printers
CPU
1. Central Processing Unit
2. components that performs calculations and executes program instructions.
Storage
1. devices which contain data and programs
  1. USB flash drives
  2. DVD drives
  3. internal hard disk drives
Embeded Systems
1. a computer integrated into another device
  1. a mobile phone
  2. washing machine
  3. peterol pump
  4. television
Application of Computers
1. Safety
2. Travel
3. Business
4. Education
5. Retail
6. Entertainment
7. Communication

Resource summary

	Created by liz simpson almost 10 years ago