1. Explain why the following are used with PCs.

Pen drives- Portability for transferring files from one computer to another

Blu ray- Large amounts of storage (50GB), bigger than DVD's and HD movies 

Fixed hard disc drives- 

2. Students can use CDs or pen drives for storing their work. Give three reasons why students may prefer to use pen drives.

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3. Ring two items which are storage media.

Flash memory card

OCR

Graph plotter

OMR

Magnetic disc

Touch pad

4. Ring two items which are output devices.

Blu-ray disc 
Optical mark reader 

Graph plotter 

Projector 

Web cam 

Graphics Tablet