Computer Science Revison

What is an algorithm?

• A sequence of instructions to solve a problem

• It is pseudocode

• It is a flowchart

• It is a robot

Why do computers use algorithms?

• To give computers precise steps to solve a problem.

• Because they are easy to use

• It is the language that computers understand

• To help them predict the future

What does sequence mean?

• To create a pattern

• To do something in order

• To do something randomly

• To repeat something over and over again

What does selection mean?

• Selection is following instructions in order.

• Selection is to repeat something over and over again

• Selection is when you have a choice of options

• Selection is choosing the best option

What is iteration?

• This is choosing what to do next

• This means doing something in order

• It is repeating something over and over again.

• It is writing pseudocode

What does this symbol represent?

• Process

• Input/Output

• Start/End

• Decision

What does this symbol represent?

• Decision

• Process

• Input

• End

What does this symbol represent?

• Output

• Start

• Decision

• Process

What does this symbol represent?

• Process

• Input

• Output

• Sub-process

What does this symbol represent?

• Input/Output

• Decision

• Start

• End