part 2

Question 1

how many bits in ASCII

Answer 1

8

Question 2

how many characters can ascii represent

Answer 2

256

Question 3

what is a character set

Answer 3

all of the characters that are interpreted by a computer

Question 4

what is unicode

Answer 4

32 bits and 4 billion characters

Question 5

what is an overflow error

Answer 5

extra digit when adding
can cause the program to crash or be ignored

Question 6

how to divide a binary number

Answer 6

shift to the right

Question 7

how to multiple a binary number

Answer 7

shift to the left

Question 8

what is metadate

Answer 8

A set of instructions used to help the computer construct an image.

Question 9

what is a pixel

Answer 9

The smallest element of an image

Question 10

what is colour depth

Answer 10

This is the number of bits used to store the colour for each pixel

Question 11

what is a bitmap

Answer 11

A picture which is represented with each pixel being assigned to one colour

Question 12

what is a vector

Answer 12

computer images created using a sequence of commands or mathematical statements

Question 13

what is resolution

Answer 13

This is the number of pixels in an image

Question 14

what is the file size of an image affected by

Answer 14

colour depth and resolution

Question 15

how to work out the file size

Answer 15

resolution x colour depth

Question 16

how to work out the total colours

Answer 16

2 to the power of the colour depth.

Question 17

jpg

Answer 17

lossy

Question 18

png

Answer 18

lossless