Download Unit 2780v7a Learner`s Guide

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LESSON 2: The Parts of a Personal Computer System (Part 2)
Motherboard
Output devices
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Input devices
Data
Key points to remember.
• Input devices send data to the CPU.
• The CPU is ‘the boss’. All data goes through the CPU. The CPU
acts as a type of police office directing traffic at a busy crossing.
• The CPU sends data to the output devices. These output devices
display, print or in some other way ‘output’ the data.
• While the person is working, the CPU saves the data to RAM not on hard disk. This is because RAM is much faster than disk
storage.
• When data is saved, it moves out of RAM, through the CPU, which
sends it to hard disk for storage.
Let’s look at some specific examples.
Learner’s Guide Unit 2780v7a
Demonstrate and apply knowledge of a
personal computer system
Instant Education Solutions
7a © ATC New Zealand