Bright Screen
A computer screen lights up and shows pictures when the device is on.
How computers do this
A computer screen is an output device that shows pictures made from tiny bits of data.
Class 1 to 2beginner10 min2 lessons
By the end you will be able to
- Point at the glowing output on a computer screen
- Say on or off when the screen shows or hides data
- Watch how picture data changes on the screen
Topic contents
Computer play 1 of 2
Look at the glow
Grown-up note (read aloud)
A computer screen is a flat window that lights up. When the device is on, the screen shows colours and pictures from data inside the computer.
- Screens are output devices
- Picture data appears on the bright part
Computer play 2 of 2
Pictures move
Grown-up note (read aloud)
Videos on screen are many pictures shown very fast. The computer sends picture after picture so your eyes see movement.
- Many pictures make movement
- The screen shows output, you watch with your eyes
Practice
Try at home
No answer key here on purpose: these are the questions worth thinking through before you move on. Open one and work it out.
0/2 attemptedPicture check
Tap your answer
Pick the picture that answers the question. A grown-up can read the words.
0/4
4 of 4 questions left.
Finished this topic?
0 of 2 lessons marked done. Marking the topic complete ticks the rest.