Computer Science

data that has been given structure or meaning

the basic unit of data within a computer system that has the value 0 or 1

Representation using binary sequences

Representing text using Unicode and ASCII

Text file size calculations

Representing bitmap images

Bitmap file size calculation

Representing sound

Calculation of sound file size

In this unit, pupils will discover how letters, images and sounds are represented with binary digits. They will also explore the factors that impact the quality of those representations and investigate the effects these quality choices have on file size.

Representation of text, images and sound

Arrange the following binary numbers in ascending order: 111, 101, 110.

Binary sequences can represent instructions.

Which statement about binary is **not** correct?

How are instructions represented in a computer's binary system?

by converting sound waves into binary sequences

In what way does binary represent sound in a computer?

What is the primary purpose of using binary in computers?

Which of the following is a binary sequence?

What is the binary representation of the decimal number 5?

How many colours can be represented with 1 bit?

Representation using binary sequences

Lesson outcome