Ch.1 Data representation

Question 1

analogue data

Answer 1

a continuous stream of data that is processed by humans

Question 2

logic gate

Answer 2

a very small component in a computer system that controls the flow of electricity

Question 3

digital data

Answer 3

discrete data that only uses the value 0 and 1

Question 4

register

Answer 4

a small component in a computer system that is used to temporarily store data

Question 5

denary

Answer 5

a base-10 number system that uses the values 0-9

Question 6

MAC address

Answer 6

a unique address that is given to a computer at the manufacturing stage that can be used to identify the computer

Question 7

character set

Answer 7

it contains all the characters that are in that character set and the binary value that is assigned to each character

Question 8

pixel

Answer 8

a very small dot of colour that is displayed with many others to create an image

Question 9

resolution

Answer 9

the dimensions of an image

Question 10

metadata

Answer 10

additional data that is stored with an image that can provide information such as the dimensions of the image and the time and date the image was taken

Question 11

colour depth

Answer 11

the number of bits that are used to create each colour in an image

Question 12

sound sampling

Answer 12

a little piece of sound that is recorded at regular time intervals

Question 13

sample rate

Answer 13

the number of samples recorded each second

Question 14

sample resolution

Answer 14

the number of bits that are used to record each sound sample