1. Data Representation - Computer Science CIE IGCSE 2023-24

What form of data do computers use?

• Hexadecimal

• Denary

• Binary

• ASCII

• Unicode

Data is processed using...

• logic gates

• wires

• registers

• CPU

Data is stored in...

• registers

• logic gates

• the CPU

• accumulator

Denary is base...

• 10

• 2

• 1

• 16

Binary is base...

• 10

• 2

• 1

• 16

Hexadecimal is base...

• 10

• 2

• 1

• 16

Why is hexadecimal a beneficial method of data representation?

• It is easier for humans to understand than binary.

• It is a shorter representation than binary, using 2 symbols for every 8 binary ones.

• It is used more widely

• It is simpler to understand than denary, as it makes use of letters.

Select the uses of Hex

• MAC Addresses

• Memory Dump

• Memory

• Hyper Text Markup Language

• Hyper Text Transfer Protocol

Select the uses of Hex

• Assembly code

• ASCII Code

• Machine Code

• Pseudocode

• Unicode

Select the uses of Hex

• IP Addresses

• Error Codes

• Web Addresses

• Home Addresses

• Media Access control codes