Slides badge

Input, process and output


  • Give an example of a:
    • General purpose computer you use
    • Embedded computer system you use

Learning Intentions

  • Understand the concept of input, process and output

Success Criteria

  • I am able to correctly identify and describe certain input, process and output devices
  • I can explain the IPO cycle

IPO cycle

  • Computers require something to happen to allow them to process. They aren’t smart like humans and await an input before they do anything.

  • What they give us back is called the output.

  • What they do to give us the output is process the input – hence Input Process Output or IPO.

IPO cycle

  • The cycle is often represented in a block diagram.

  • Notice the arrow at the bottom going from output back to input. This is because often the output of one process is actually the input to another.


  • There are many methods of input to a computer system. We call devices that provide an input, input devices.

  • Anything that provides the computer with data is an input device.


  • When input data needs to be processed, it is processed in the processor.

  • The processor, also called a Central Processing Unit (CPU), is often considered the brain of the computer because it does all the processing of the instructions.

Output devices

  • An output device gives the user back some data. The data will have been processed. Data could be:

    1. What is displayed on the monitor

    2. A sound from the computer

    3. A vibration on a controller

    4. A page printed using a printer

Which of the following are input devices?

Complete all Activities up to the Components of a computer system page.
Continue with your posters when you are finished


Presentation Overview
S3 Computer Science :: Computer Systems :: Input, process and output
© J Balfour
07:10 | 30-09-2023
Slideshow Outline
Save progress Show presenter mode Canvas controls Show widget screen
Dark Mode Bold Text Accessibility
Random Number Generator Timer Binary & decimal converter Show Python editor Show Knox 90
Provide feedback Help
      Binary conversion
      Denary to binary conversion
      Binary to denary conversion
      Slideshow Outline
      Feedback 👍

      Apply a filter:

      All slide files