What is the denary number system?

Our usual base 10 number system

A special number system for computers

What is the point of binary?

It represents how computers interpret electrical signals

Because we like to make you do extra maths ;-D

Because it describes star systems

Increasing the colour depth means…

A bigger range of colours can be used for each pixel

Reducing the amount of colours in the image will

Reduce the amount of binary needed for each pixel.

Reduce the quality of the image.

Increasing the resolution of an image means that

More pixels will be used to make up the image

More colours will be used to make up the image

The binary code for each pixel is used to determine

How many pixels will be in the image

iGCSE - data representation

Computers

10th - 11th Grade

CCSS covered

Used 12+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is the smallest?

21 Nibbles

40 bits

8 bytes

1 Kilobyte

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is the largest?

9 Megabytes

100 Kilobytes

0.01 Gigabyte

40000 Bytes

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these would hold 1 hexadecimal value?

Bit

Nibble

Byte

Petabyte

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many bits would you need to store this number: 1010101

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many unique values can you represent with 6 bits

128

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is 100101 in denary?

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is 10001001 in denary?

137

274

192

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iGCSE - data representation

Which of these is the smallest?

Which of these is the largest?

Which of these would hold 1 hexadecimal value?

How many bits would you need to store this number: 1010101

How many unique values can you represent with 6 bits

What is 100101 in denary?

What is 10001001 in denary?

What is 5B in denary?

What is E in denary?

What is 18 in binary?

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