Understanding computers Y7 assessment

The numbers we normally use are called ________ numbers and have 10 different values.

• denary
• binary
• digital
• integers

What is binary?

• A part of a computer
• A number system which computers use to represent data

• A computer program

• Software for a computer

Which digits are used in binary?

• 0 & 2
• 1 & 2

• 0 & 1

• 1, 2, 4, 8

A single 0 or 1 is known as a

• Bit
• Byte
• Nibble
• Binary

Why do computers only use 1's and 0's to store binary data?

• Its easier than storing letters
• They use electricity which is either ON or Off
• They can't remember any other numbers

Binary is also known as

• Base 1
• Base 2
• Base 10
• Base jumping

The missing column header on the left should be

• 6

• 7

• 8

• 16

What number does the following binary string represent?

• 10

• 11

• 12

• 13

9 as a binary string is written as

• 1001
• 1010
• 1101
• 1000

What do we call 8 bits?

• A handful
• A nibble
• A byte
• A kilobyte