WJEC GCSE Computer Science Computer systems and hardware overview quiz quiz

To store the user's files permanently

To fetch, decode and execute instructions

To display images on the screen

To connect the computer to a network

The control unit

The program counter

The arithmetic logic unit

The accumulator

Instructions and data share the same main memory

Instructions and data are kept in separate memories

Programs are stored only in ROM

Each instruction runs on its own core

The result of the last calculation

The data fetched from memory

The number of programs running

The address of the next instruction

Decode

Fetch

Execute

Store

The amount of cache memory

The number of fetch-decode-execute cycles per second

The capacity of secondary storage

The number of input devices supported

Cores only affect storage, not processing

More cores always slow a computer down

The program may not be written to use multiple cores

Cores reduce the clock speed automatically

It permanently stores all the computer's files

It increases the screen resolution

It replaces the need for RAM

It stores likely-needed data close to the CPU for fast access

RAM is volatile and holds programs and data in use

RAM is non-volatile and stores the BIOS

RAM keeps its contents when the power is off

RAM is slower than secondary storage

The user's documents

Fixed startup (boot) instructions

Data moved out of a full RAM

The currently open applications

Extra cache built into the CPU

A faster type of RAM

Secondary storage used as if it were extra RAM

Memory that never loses its contents

It is always cheaper per gigabyte

It is faster and more durable with no moving parts

It has unlimited write cycles

It always has a larger capacity

$40$

$4$

$1600$

$25$

A printer

Speakers

A microphone

A monitor

A keyboard

A touchscreen

A scanner

A loudspeaker

RAM is too fast for everyday use

Secondary storage is volatile

RAM cannot store any programs

RAM is volatile, so storage keeps data permanently