4.5.3 Units of Information Flashcards
1
Q
What is a bit?
A
A bit is the fundamental unit of information that can only take two values, 1 and 0, which can be represented by computers using high or low currents.
2
Q
What is a byte?
A
A collection of 8 bits
3
Q
What is a nybble?
A
Half a byte, 4 bits.
4
Q
How does the number of different values that can be represented vary?
A
- The number of different values that can be represented with a specified number of bits varies with the number of bits.
- The more bits that are assigned to a number, the greater the number of values that can be represented.
5
Q
What does the range of values that can be represented depend on?
A
The range of values that can be represented with a specified
number of bits also depends on the number of bits.
6
Q
How can quantities of bytes be described?
A
Quantities of bytes can be described using binary prefixes or decimal prefixes.
7
Q
How do binary prefixes progress?
A
Binary prefixes go up in powers of two
8
Q
How do decimal prefixes progress?
A
Decimal prefixes go up in powers of ten.
