HPA Computing KS3 Revision

Binary digits are called:

• byte

• nibble

• kilobyte

• bit

Binary only uses two numbers, these are:

• 1 and 2

• 10 and 11

• 4 and 8

• 0 and 1

Convert the binary value 0110 into denary/decimal

• 6

• 110

• 11

• 9

What do we mean by COMPUTATIONAL THINKING?

• Understanding a complex problem and developing possible solutions.

• Breaking a task into smaller tasks.

• Selecting a computer to use.

• Focusing on what is important, ignoring what is unnecessary.

Define ABSTRACTION

• Breaking a task into smaller tasks.

• Drawing a map to show how to reach a destination.

• Creating step by step instructions.

• Focusing on what is important and ignoring what is unnecessary.

Define DECOMPOSITION

• Breaking a task into smaller tasks.

• Looking for similarities and trends.

• A sequence of instructions.

• Focusing on what is important and ignoring what is unnecessary.

Define PATTERN RECOGNITION.

• A sequence of instructions.

• Looking for similarities and trends.

• Breaking a task into smaller tasks.

• Focusing on what is important and ignoring what is unnecessary.

Define ALGORITHM DESIGN

• Breaking a task into smaller tasks.

• Looking for similarities and trends.

• A sequence of instructions.

• Deciding what computer to use.

A school database has lots of information on students, the data manager needs to use abstraction? What data should she leave out?

• Age

• Guardian's phone numbers

• Classes

• Eye colour

Convert the binary value 1111 into denary/decimal

• 15

• 1111

• 4

• 16