1. Binary systems and hexadecimal Flashcards
1
Q
Why do computers use binary?
A
A computer is made up of switches that can be either on or off.
2
Q
What headings are used for binary?
A
128 64 32 16 8 4 2 1
3
Q
How do you convert between denary and binary?
A
Add up the values
4
Q
What are 8 bits called?
A
A byte
5
Q
What are 1024 bytes called?
A
A kilobyte
6
Q
What are 1024 kilobytes called?
A
A megabyte
7
Q
What are 1024 megabytes called?
A
A gigabyte
8
Q
What are 1024 gigabytes called?
A
A terabyte
9
Q
What are the headings in hexadecimal?
A
256 16 1
10
Q
How do you convert between binary and hexadecimal?
A
Split into two nibbles
11
Q
Why use hexadecimal?
A
Easier to find errors than using binary
12
Q
Uses of hexadecimal
A
Identifying colours
MAC addresses
Machine code
