1.3 units and data representation Flashcards
1
Q
The binary unit system…
A
2
Q
A binary digit is known as a…
A
bit
3
Q
Eight bits are known as a…
A
byte
4
Q
A nibble is
A
half a byte or 4 bits
5
Q
how do you calculate image file size?
A
(colour depth) x (image height px) x (image width px)
6
Q
how do you calculate text file size?
A
(bits per character) x (number of characters)
7
Q
how do you calculate sound file size?
A
(sample rate) x (duration of seconds) x (bit depth)
8
Q
four rules that need to be followed when adding two binary numbers:
A
0 + 0 = 0
1 + 0 = 1
1 + 1 = 10 (binary for denary 2)
1 + 1 + 1 = 11 (binary for denary 3)
9
Q
how does overflow occur?
A
Overflow occurs when the result of a calculation requires more bits (place values) than are in the available range.
10
Q
A
