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Computer Science - Year 7 > 1.1.1 Binary Systems > Flashcards

1.1.1 Binary Systems Flashcards

1
Q

Computers use a _______ number system

A

binary

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2
Q

Humans use a _________ number system

A

denary

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3
Q

Binary is also known as _______

A

base 2

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4
Q

Denary is also known as ________

A

base 10

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5
Q

Binary (base 2) is made up of the numbers….

A

0 and 1

zero and one

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6
Q

Denary is made up of the numbers….

A

0 to 9

zero to nine

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7
Q

What are the data units from smallest to largest?

A

bit

nibble

byte

kilobyte

megabyte

gigabyte

terabyte

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8
Q

What are examples of data?

A

text/words

sounds

images

numbers

video

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9
Q

Computers take _____ and ______ it into _________

A

Computers take data and process it into information.

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10
Q

What is an algorithm?

A

An algorithm is a set of steps to solve a problem

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11
Q

8 bits =

A

1 byte

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12
Q

A computer process stores data using ________ __________ that can be ON or OFF

A

A computer process stores data using electrical switches that can be ON or OFF

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13
Q

What are the 8-bit binary placeholder values?

A

128 / 64 / 32 / 16 / 8 / 4 / 2 / 1

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14
Q

How do you convert a binary number to denary?

A

Find all the placeholders with 1s in them and add those placeholders up. The answer is the denary number.

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15
Q

A shorter way to write binary digit is ____

A

bit

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16
Q

What are 3 facts about a bit?

A

The smallest piece of computer memory

A single on/off switch inside a computer’s electronic memory

A single 1 or 0

17
Q

A kilobyte is 1024 bytes and will store about….

A

half a page of text

18
Q

A megabyte is 1024 kilobytes. A picture on your phone is…

A

about 3 megabytes

19
Q

A gigabyte is 1024 megabytes. A movie is about…

A

4 gigabytes

20
Q

Kilobyte = ____

Megabyte = ____

Gigabyte = ____

Terabyte = ____

A

Kilobyte = KB

Megabyte = MB

Gigabyte = GB

Terabyte = TB

21
Q

What are the 4-bit binary values of the numbers 0 - 5?

0 = _ _ _ _

1 = _ _ _ _

2 = _ _ _ _

3 = _ _ _ _

4 = _ _ _ _

5 = _ _ _ _

A

What are the 4-bit binary values of the numbers 0 - 5?

0 = 0000

1 = 0001

2 = 0010

3 = 0011

4 = 0100

5 = 0101

22
Q

What are the 4-bit binary values of the numbers 6 - 10?

6 = _ _ _ _

7 = _ _ _ _

8 = _ _ _ _

9 = _ _ _ _

10 = _ _ _ _

A

What are the 4-bit binary values of the numbers 6 - 10?

6 = 0110

7 = 0111

8 = 1000

9 = 1001

10 = 1010

23
Q

128 64 32 16 8 4 2 1

8 + 16?

A

128 64 32 16 8 4 2 1

24

24
Q

128 64 32 16 8 4 2 1

16 + 32?

A

128 64 32 16 8 4 2 1

48

25
Q

128 64 32 16 8 4 2 1

64 + 32?

A

128 64 32 16 8 4 2 1

96

26
Q

128 64 32 16 8 4 2 1

64 + 128?

A

128 64 32 16 8 4 2 1

192

Computer Science - Year 7 (7 decks)

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