Year 8 Understanding Computers

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