Chapter 3 - Part 1

Question 1

Number base

Answer 1

The number of digits (including 0) that are used to create all other numbers within that specific numbering system

Question 2

Number base for decimal

Answer 2

10

0,1,2,3,4,5,6,7,8,9

Question 3

Number base for binary

Answer 3

2

0,1

Question 4

Number base for hexadecimal

Answer 4

16

0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F

Question 5

Purpose of hexadecimal

Answer 5

To simplify binary so it can be stored without taking up as much storage space

Question 6

bit

Answer 6

The value of one 1 or 0

Question 7

nibble

Answer 7

4 bits

Question 8

Byte

Answer 8

8 bits

Question 9

Kilobyte

Answer 9

1000 bytes

Question 10

Megabytes

Answer 10

1000 kilobytes

Question 11

Gigabytes

Answer 11

1000 megabytes

Question 12

Terabytes

Answer 12

1000 gigabytes

Question 13

Petabyte

Answer 13

1000 terabytes

Question 14

0 + 0 = ?

Answer 14

0

Question 15

0 + 1 =

Answer 15

1

Question 16

1 + 1 =

Answer 16

0 CARRY 1 over

Question 17

1 + 1 + 1 =

Answer 17

1 CARRY 1 over

Question 18

Left binary shift does what to the denary

Answer 18

x2

Question 19

right binary shift does what to denary

Answer 19

divide by 2

Question 20

What does ASCII stand for

Answer 20

American Standard Code for Information Interchange

Question 21

how bits does ASCII use

Answer 21

7

Question 22

Most possible ASCII combinations

Answer 22

128

Question 23

Unicode

Answer 23

The same as ASCII at the start, but after that covers a larger range of characters (e.g. Greek letters)

Question 24

Max possible characters for Unicode

Answer 24

256

Question 25

File size (bits) =….

Answer 25

No. Of characters x bits per character

Question 26

Pixel is a…

Answer 26

Single point in an image. Short for PIcture ELement

Question 27

More pixels does what to picture quality

Answer 27

Increases it, better quality

Question 28

What is a bitmap

Answer 28

An image formed of pixels

Question 29

Image size in pixels =…

Answer 29

Pixel height x pixel width

Question 30

Colour depth?

Answer 30

Number of bits used to represent each pixel

Question 31

How to find the number colours from colour depth

Answer 31

2 to the power of ‘colour depth’

Question 32

minimum bitmap file size = …

Answer 32

width x height x colour depth

Question 33

Monochrome picture - what binary is used

Answer 33

``` 1 = white 0 = black ```

Question 34

When storing binary for bitmaps it goes from left to right, starting at the bottom row

Answer 34

Yes, stimmt