What is a computer keyboard?

​(a) (i) What is a computer keyboard? (1mk)

Input device with keys for keying in data in the form of characters

​List four types of keys found on a computer keyboard. Give an example of each. (4mks)

1. Alphanumeric
2. Function
3. Numeric key pad
4. Special character
5. Cursor control

​(b) Give four differences between present  days’ computers  and the older generation of computers (4mks)

Present day computers,  older day Computers

1. Smaller in size, Bigger in size
2. Faster processing speed, Slower processing speed
3. Higher storage capacities (RAM and Hard Disk), Smaller storage capacities (RAM and Hard Disk)
4.  Lower cost, High cost

​(c) (i) State three advantages and one disadvantage of using a laser printer

Advantages

1. Fast
2. Quiet
3. Quality printout
4. More fonts

Disadvantages

1. Can not do carbon printing
2. Can not use continuous sheet
3. High cost of purchase

​(ii) Distinguish between a line printer and page printer

A page printer prints one page at a time while a line printer prints one line at a time.

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