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WorksheetsYear 8 Understanding Computers
Total questions: 10
Worksheet time: 6mins
The purpose of the cpu is to ... all the data and instructions in a computer system
(a)
cache memory is very ... but very small. It is a very expensive type of memory.
(a)
Binary 1111 1111 is what in denary?
8
255
256
128
What is it called when the result of an 8 bit addition is more than 255?
A problem
An overflow error
Binary to denary conversion
ASCII
How many processes per second does 1GHz carry out?
1 thousand
1 million
1 billion
1 trillion
How many CPU's are there in a quad core computer?
2
4
6
8
How many cores are there in a Hexa-core computer?
2
4
6
8
What type of device is this?
CD/DVD drive
SD card
Hard drive
Solid state drive
What type of device is a computer mouse?
left click
both input and output
input
output
What does ROM do?
The opposite of RAM
Read Only Memory
Hold currently running programs and instructions
Hold the BIOS, or boot up sequence
