Tasks

1. Check you have the following posts:1. Hardware and Software2. Input and Output3. Components of a Computer

2. ALL fonts should be a sensible size and colour. NO ALL CAPITALS.3. All sentences should make sense – READ YOUR WORK.4. Highlight or otherwise bring attention to KEY WORDS5. Illustrate your posts with pictures.

Hardware and software

• You should have at LEAST the following:• A definition of Hardware - Hardware is a physical component of a computer

system. This means you can touch and hold it.• At least 3 examples of hardware with descriptions if necessary

• A definition of software – Software is the applications or programs that control or provide useful functions on a computer. They are not physical. Software is simply a list of instructions.• At least 3 examples of software with descriptions if necessary.

Input and output

• You must have:• Definitions of input and output

• Input is information or data that flows IN to a computer system• Output is information or data given OUT by a computer system.

• Some examples of input and output – what form could they take?• Some sensible illustrations

Components of a computer

• You must have:• The diagram from the shared area.• An explanation of the diagram – it is a diagram which shows the main

components of any computer system. A computer is simply a device which takes input and processes it in order to provide useful output. • Processing is the act of manipulating or otherwise changing data in a way

which is considered useful.

• Continue to the next slide for the CPU

CPU

• You must have answered the 4 questions IN DETAIL:1. What does CPU mean?

• Definition. 2. What is the purpose of the CPU?

• What is it’s role in a computer, what EXACTLY does it do? How?3. How fast are modern CPU’s?

• What is a CPU cycle?• What does the CPU cycle look like? Get a diagram!

4. What does GHZ mean?• What is a Hertz? How does this relate to a CPU cycle?• How many Hertz/Cycles are there in 1 MHZ• How many Hertz/Cycles are there in 1 GHZ?