Number Bases (AQA A-Level Computer Science): Flashcards

Smallest unit of data; binary digit; value 0 or 1

Group of 8 bits

$2^n$

256 ($2^8$)

$2^{10}$ = 1,024 bytes

Base 2; uses digits 0 and 1

Base 16; uses 0-9 and A-F

2 hex digits (each = 4 bits)

Most Significant Bit (leftmost bit)

13