5.3 Units of information Flashcards
1
Q
What is a bit?
A
The fundamental unit of information. It can only take 2 values 0 and 1. Can be represented by a computer using high or low currents. Notated with lowercase b.
2
Q
What is a byte?
A
A bit is a collection of 8 bits. Notated with uppercase B
3
Q
what is a nybble?
A
A nybble is half of a byte (4 bits)
4
Q
How do you calculate the amount of different values that can be represented with n bits
A
2^n
5
Q
What is the value of Kibi (Ki), Mebi (Mi), Gibi (Gi) and Tebi (Ti)
A
2^10, 2^20, 2^30, 2^40
6
Q
what is the value of Kilo (K), Mega (M), Giga (G) and Tera (T)
A
10^3 , 10^6, 10^9, 10^12