SQA National 5 Computing Science Computer systems overview quiz quiz

4

8

16

1024

byte, bit, kilobyte, megabyte

kilobyte, byte, megabyte, gigabyte

bit, byte, kilobyte, megabyte

megabyte, kilobyte, byte, bit

Using a mantissa and an exponent (floating point)

As a single ASCII code

Only using the place values 1 to 8

As a grid of pixels

As a vector object

As a mantissa and exponent

It cannot be stored

As a binary code number from a set such as ASCII

The arithmetic logic unit (ALU)

The data bus

Main memory

The hard drive

Carries data between components

Holds the instructions and data currently in use

Performs calculations

Encrypts data

The data itself

Electrical power

The location (address) of the data

The program's output

Using electricity while switched on

Using metals during manufacture

Designing the user interface

Electronic waste (e-waste) sent to landfill

Recycling and reusing old equipment

Replacing devices as often as possible

Leaving all devices switched on overnight

Sending old computers to landfill

Deletes it permanently

Scrambles it with a key so only an authorised person can read it

Makes it load faster

Converts it to a graphic

A brighter screen

A faster processor

Encrypting the data on the laptop

A larger hard drive

Storing files

Speeding up the processor

Carrying data between components

Confirming identity using a physical feature such as a fingerprint

Accessing a computer system or data without permission

Switching a computer off

Writing a program

Recycling old hardware

An environmental impact

A storage unit

Malware

A bus