Lesson 1: Pixels

Before starting this unit, check that the children can recall:

• Data transmission is the movement of data from one point to another.

• The Mars rover is a robotic vehicle that explores, investigates and returns data about the terrain on Mars.

• Binary is the the language used for communication between computers, including the Mars rover.

• ASCII (American Standard Code for Information Interchange) uses binary codes to represent other characters, such as numbers and letters.

• A computer's RAM (Random Access Memory) stores the instructions while a program is running.

• A CPU (Central Processing Unit) is the computer's brain and handles data from input and output devices and the programs running on the computer.