AQA A’Level SLR10 Base 2, 10 and 16 number systems
About this video
AQA Specification Reference
AS Level 3.5.2.1
A Level 4.5.2.1
Computers use a number of different base systems, including base-2 Binary, base-10 Decimal and base-16 Hexadecimal. We show you how to convert between them and discuss which computers use hex as a short hand for binary.
Key questions:
- How do we represent positive integers in binary?
- How can we use hexadecimal to represent positive integers?
- How does hexadecimal help us when representing large binary numbers?
- How do we convert between the various base number systems - binary, decimal and hexadecimal?
00:00 Base- 2, 10 and 16 number systems
00:13 intro
00:18 Number bases
00:37 Decimal (base 10)
02:41 Number bases continued
02:53 Converting from binary (base 2) to decimal (base 10)
04:55 Converting from decimal (base 10) to binary (base 2)
06:46 Hexadecimal (base 16)
08:35 Why hexadecimal is used in computer science
10:10 Converting between binary, hexadecimal and decimal
16:48 Key questions
17:12 Going beyond the specification
17:23 Other base number systems
18:04 Outro
Last updated: 16.04.25
