Inside+the+computer+(N4&N5)

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1. Which part of the computer controls everything that happens within it?

2. What is the name of the basic measure of a computer processor’s performance?

3. What is the unit of measurement for the measure mentioned in question 2?

4. Research and list three different companies that manufacture computer processors.

5. Which one of these statements about RAM and ROM is true? A Neither ROM nor RAM holds data when the power is switched off. B RAM holds data when the power is switched off and ROM doesn't. C The user can write data to RAM but not to ROM. D The user can write data to ROM but not to RAM.

6. Where are programs and applications stored prior to the computer being switched on and to were are they transferred as we open them?

7. What is the word size of a computer system?

8. Describe one use for ROM and one use for RAM within a computer system.

9. Which generally holds more data, RAM or ROM?

10. When a computer is first switched on, which type of memory is read from first and why?

11. This investigation should be done in pairs or small groups


 * The average size of an MP3 file is 5MB
 * The average size of a digital photograph is 3MB
 * 1 minute of video (YouTube quality) is 2MB
 * There are 1024 Megabytes in 1 Gigabyte
 * The hard disk drive on Andy's new PC is 250GB in size

(a) Work out how many MB are in 250GB (b) How many music files could the 250GB hard drive hold? (c) How many photographs could the 250GB hard drive hold? (d) How much video (YouTube quality) could the 250GB hard drive hold? (e) Do you think 250GB is a large enough hard drive? Explain your answer.