Chapter 3 - Part 1 Flashcards

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1
Q

Number base

A

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

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2
Q

Number base for decimal

A

10

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

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3
Q

Number base for binary

A

2

0,1

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4
Q

Number base for hexadecimal

A

16

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

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5
Q

Purpose of hexadecimal

A

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

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6
Q

bit

A

The value of one 1 or 0

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7
Q

nibble

A

4 bits

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8
Q

Byte

A

8 bits

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9
Q

Kilobyte

A

1000 bytes

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10
Q

Megabytes

A

1000 kilobytes

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11
Q

Gigabytes

A

1000 megabytes

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12
Q

Terabytes

A

1000 gigabytes

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13
Q

Petabyte

A

1000 terabytes

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14
Q

0 + 0 = ?

A

0

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15
Q

0 + 1 =

A

1

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16
Q

1 + 1 =

A

0 CARRY 1 over

17
Q

1 + 1 + 1 =

A

1 CARRY 1 over

18
Q

Left binary shift does what to the denary

A

x2

19
Q

right binary shift does what to denary

A

divide by 2

20
Q

What does ASCII stand for

A

American Standard Code for Information Interchange

21
Q

how bits does ASCII use

A

7

22
Q

Most possible ASCII combinations

A

128

23
Q

Unicode

A

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

24
Q

Max possible characters for Unicode

A

256

25
Q

File size (bits) =….

A

No. Of characters x bits per character

26
Q

Pixel is a…

A

Single point in an image. Short for PIcture ELement

27
Q

More pixels does what to picture quality

A

Increases it, better quality

28
Q

What is a bitmap

A

An image formed of pixels

29
Q

Image size in pixels =…

A

Pixel height x pixel width

30
Q

Colour depth?

A

Number of bits used to represent each pixel

31
Q

How to find the number colours from colour depth

A

2 to the power of ‘colour depth’

32
Q

minimum bitmap file size = …

A

width x height x colour depth

33
Q

Monochrome picture - what binary is used

A
1 = white
0 = black
34
Q

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

A

Yes, stimmt