# 5 Course summary

Congratulations on completing the course. You should now be able to:

- visualise the room-filling early computers and appreciate how the technology has changed to achieve the computers of today
- consider how many computers there are in the world today, how they pervade our lives, and how computer systems come in many different forms
- understand how computers can be networked together to provide additional functionality
- identify the components of a computer, from its processor to its input and output devices
- understand how the world we live in with text, numbers, images and sound can be represented as data for a computer to process
- begin to see how instructions can be written for a computer to process data
- consider the energy implications of the increasing use of computers.

OpenLearn - An introduction to computers and computer systems
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