Computer Science

the number of bits used to represent the colour of each pixel

total amount of pixels an image contains based on its width and height expressed in pixels

Representing bitmap images

In this unit pupils will discover how letters, images, and sound are represented with 1s and 0s. They will also explore the factors that impact the quality of those representations, such as bit depth. They will become familiar with measurements of storage and converting between units of measurement.

Representation of text, images and sound

Which term refers to an image format that is composed of a grid of individual pixels, each with its own colour value?

What determines the quality of a bitmap image?

What is the smallest element of a bitmap image?

Which term describes the number of bits used to represent the colour of each pixel in an image?

Allows for 16.7 million different colours.

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

Matches characters to a unique binary sequence

Which character representation method uses 8 bits per character?

What is the method of character representation that uses up to 32 bits per character?

How many possible states are there in a sequence of 3 bits?

This lesson will be removed by end of Summer Term 2025.

Representing bitmap images

Lesson outcome

This lesson will be removed by end of Summer Term 2025.