Data Representation Flashcards
1
Q
What is a Bit?
A
A single digit in a binary number; its either 0 or 1.
2
Q
What is a byte?
A
8 bits
3
Q
Describe a Kilobyte
A
1024 bytes, 2*10 bytes
4
Q
Describe a Megabit
A
1024 Kb, 2*20 bytes
5
Q
Describe Gigabyte
A
1024 mb, 2*30 bytes
6
Q
Describe Terabyte
A
1024 gb, 2*40 bytes
7
Q
The formula for range for binary number
A
2*n - 1
8
Q
What is ASCII
A
It uses a 7-bit code and represents 128 characters. 96 are displayable and 32 are controlled characters.
9
Q
What is the 8th bit for ASCII?
A
error checking
10
Q
What is ASCII limited to?
A
Only limited to American English
11
Q
What is Unicode
A
it can represent 65536 characters using 16 buts
