4.5.3 Units of Information Flashcards Preview

AQA A-Level Computer Science > 4.5.3 Units of Information > Flashcards

Flashcards in 4.5.3 Units of Information Deck (4)
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1
Q

What is the fundamental unit of information?

A

The bit

2
Q

How many bits does it take to represent 2^n values?

A

n bits

3
Q

What are the names and symbols of powers of 2 binary prefixes?

A

kibi, Ki, 2^10 Bytes
mebi, Mi, 2^20 Bytes
gibi, Gi, 2^30 Bytes
tebi, Ti, 2^40 Bytes

4
Q

What are the names and symbols of powers of 10 decimal prefixes?

A

kilo, K, 10^3 Bytes
mega, M, 10^6 Bytes
giga, G, 10^9 Bytes
tera, T, 10^12 Bytes