4.5.3 FoDR - Units of Information Flashcards
1
Q
What is a bit
A
A Binary digit, and the fundamental unit of information
2
Q
Why do computers use binary
A
- They work on low and high current i.e 1 or 0, which is only available in base 2
3
Q
What is a byte
A
8 bit
4
Q
What is a nibble
A
4 bits
5
Q
How many different values can be represented with n bits
A
2ⁿ
6
Q
What are the 4 main symbols, names and corresponding powers of 2 for binary prefixes
A
- kibi, Ki - 2¹⁰
- mebi, Mi - 2²⁰
- gibi, Gi - 2³⁰
- tebi, Ti - 2 ⁴⁰
