Grade 9 - Unit 1 Revision

1 Byte =

• 8 bits

• 4 bits

• 16 bits

1 Nibble =

• 4 bits

• 8 bits

• 6 bits

Hexadecimal number is:

• Base 2

• Base 10

• Base 16

1 Kibibyte (KiB) has:

• 1024 Bytes

• 1000 Bytes

• 16 Bytes

What is the Binary number of the denary number 10:

• 1010

• 1100

• 1001

Why computers use binary to represent data:

• computers only allow 1s and 0s to be entered.

• Computer are made of switched and gates that can only be in or off.

• Both computers and humans can quickly process binary data.

How many Kibibytes (KiB) equal a mebibyte (MiB)

• 1024

• 1000

• 2048

Is a base 2 number?

• Binary

• Hexadecimal

• Denary

Give the effect on file size of an image when the resolution of an image decreased:

• Will decrease

• Will Increase

• no change

What is the Binary number of 14:

• 1110

• 1010

• 1001

• 1100