Font size
Worksheets1.3 Represent text, images and sound.
Total questions: 18
Worksheet time: 16mins
How does the computer represent text on a screen?
Text is represented using character sets like ASCII or Unicode, converted to binary for display.
Text is represented as a series of colours and shapes.
A (a) is a collection of characters that a computer system can recognize and use for processing and display. Examples of it are ASCII and UTF-8.
How many characters or symbols can be represented with an 8-bit binary number?
(a)
Computers work in binary. All data must be converted into binary in order for a computer to (a) it. Sound is no exception. To do this, sound is captured - usually by a (b) - and then converted into a (c) signal.
An image is made up of tiny dots called (a) .
What does RGB stand for?
(a)
How is the colour black represented in RGB hexadecimal notation?
(a)
How is the colour white represented in RGB hexadecimal notation?
(a)
How is the colour red represented in RGB hexadecimal notation?
(a)
The image dimensions, which refer to the width and height in pixels, are known as the (a) .
The number of bits used to represent each colour is called the (a) .
________ is the process of recording sound at set intervals.
Sound sampling
Sound transmission
Sound encoding
Sound digitization
When converting a sound wave from analogue to digital in order for both waves to be as similar as posible we have to...
The number of samples taken in a second is called the (a)
(a) is the number of bits that are used to represent each sample.
How many bits are in a single byte?
4
8
12
16
