U1 Information Representation

Question 1

Pixel

Answer 1

Smallest picture element that makes up an image

Question 2

Colour depth

Answer 2

number of bits used to represent the colours in a pixel

Question 3

Bit depth

Answer 3

Number of bits used to represent the smallest unit in, for example, a sound or image file.

Question 4

Image resolution

Answer 4

Number of pixels that make up an image

Question 5

Screen resolution

Answer 5

Number of horizontal and vertical pixels that make up a screen display

Question 6

Sampling resolution

Answer 6

Number of bits used to represent the sound amplitude

Question 7

Sampling rate

Answer 7

Number of sound samples taken per second

Question 8

Frames per second

Answer 8

Number of video frames that make up a video per second

Question 9

Vector graphic file endings

Answer 9

.svg .cgm .odg

Question 10

Bit-map image file endings

Answer 10

.jpeg .bmp .png

Question 11

File size in pictures

Answer 11

File size(bits) = number of pixels * colour depth

Question 12

Sound file size calculation

Answer 12

Bit rate = sampling rate * sampling resolution
File size = bit rate * length of sound

Question 13

Binary prefixes

Answer 13

kibi, mebi, gebi, tebi