Unit 1 - 2

Question 1

What is primary storage?

Answer 1

ROM AS WELL
RAM - Part of the motherboard - Stores data, programs and instructions that are CURRENTLY IN USE - VOLATILE

Question 2

What is the need for primary storage?

Answer 2

Gives processor fast access to data and instructions that primary memory holds

Question 3

What is RAM?

Answer 3

Random access memory, can be read and written, holds data that is currently being used - VOLATILE

Question 4

What is ROM?

Answer 4

Read only memory - NON VOLATILE - Also primary storage, can only be read, cannot be edited, ideal for storing data and instructions

Question 5

What is the purpose of virtual memory?

Answer 5

Data is moved to virtual memory when RAM runs out of storage to store data - makes computer RUN SLOWER, processor has to wait for data to be swapped between virtual memory (hard disk) and RAM

Question 6

What is secondary storage?

Answer 6

NON VOLATILE - LONG TERM STORAGE, used to keep data and programs indefinitely

Question 7

What are the examples of secondary storage?

Answer 7

Magnetic storage - HARD DISK
Optical - DVD
Solid state drive (SSD) - USB,SSD (flash memory)

Question 8

What is 4 bits known as?

Answer 8

A nibble

Question 9

8 bits (2nibbles) is known as?

Answer 9

1 Byte

Question 10

What is 1000 bytes?

Answer 10

1 kilobyte

Question 11

What is 1000 kilobytes?

Answer 11

1 megabyte

Question 12

What is 1000 megabytes?

Answer 12

1 gigabyte

Question 13

What is 1000 gigabytes?

Answer 13

1 terabyte

Question 14

What is 1000 terabytes?

Answer 14

1 petabyte

Question 15

What are the 2 possible binary digits?

Answer 15

0 or 1

Question 16

What is binary digit known as?

Answer 16

A bit

Question 17

What is analogue data?

Answer 17

A real life signal that can vary in value (size)

Question 18

Give 3 examples of analogue data?

Answer 18

Sound waves, pressure, temperature