Download Unit 2780v7a Learner`s Guide

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LESSON 2: The Parts of a Personal Computer System (Part 2)
Internal Hard Disk Drive
Function:
• An HDD is like a library. It stores all the data until the user needs
it again.
• It is called long term storage because it stores data almost
permanently. Disks may lose their data, but they normally last a
very long time.
• Disk drives store all the files and most of the software used by
the computer.
External Hard Disk Drives
• Inside the computer case, you will find one or more hard drives.
But it is also possible to attach external hard drives to a computer.
• There are many options available, depending on the age of your
computer and how much data you want to store. Some examples
of external storage are shown below.
DVD or CDs
• Some computers have internal DVD/CD drives.
• An external DVD/CD drive can also be attached to
a computer using a USB cable.
Instant Education Solutions
7a © ATC New Zealand
Unit 2780v7a
Learner’s Guide
Demonstrate and apply knowledge of a
personal computer system