text and characters

Question 1

what does bit pattern mean?

Answer 1

sequence of 1s & 0s eg 10011101

Question 2

what does character mean?

Answer 2

any letter, digit or special symbol that you can type in keyboard eg b, s, 7

Question 3

what is a character set?

Answer 3

the complete set of characters and their codes

A = 1000001

Question 4

what is character encoding?

Answer 4

representing a character with code

Question 5

what is ascii?

Answer 5

American Standard Code for Information Interchange

Question 6

what is unicode?

Answer 6

an ascii extension

Question 7

what does metadata mean?

Answer 7

it is data about data- a part of an image or sound file. eg. a photo can contain information about where/when it was taken.

Question 8

what is a resolution of an image?

Answer 8

the resolution is how many pixels are in an image

Question 9

what is the minimum color depth for a bitmap image that requires 4 colors?

Answer 9

2

Question 10

what is the minimum color depth for a bitmap that requires 18 colors?

Answer 10

5

Question 11

what number of colors are possible with a bitmap that has a color depth of 6 bits?

Answer 11

64

Question 12

what does digital image mean?

Answer 12

digital image is an optically formed duplicate or other reproduction of an object using a lens / mirror. digital images are a representation of an image as a series of bits.

Question 13

what is a pixel?

Answer 13

a pixel is a tiny square of color

Question 14

what does pixelated mean?

Answer 14

when an image is enlarged causing the image to break up into pixels

Question 15

what is a megapixel?

Answer 15

roughly a million pixels

Question 16

what is the color depth?

Answer 16

number of bits used to represent ty color of a pixel

Question 17

what is a bitmap?

Answer 17

it’s a method of storing imagined using pixels