Computer Images HWK 9TE5

(Fill in the blank to complete the sentence) Tiny squares called ..... are the building blocks of all digital images.

• elements
• squares
• pixars
• pixels

The first ever digital image which was of the inventor's son was created in .... 

• 1958
• 1968
• 1957
• 1972

The romans used ..... in their houses which illustrate the idea of how a picture can be represented in a digital format.

• Mosaics
• Tiles
• Paintings
• Non of these

The digital picture shown has been zoomed in and appears now to be very 'blocky'. What is the correct term for this?

• Poor resolution
• Digitisation
• Pixelation
• Granularity

The image on the left has been made by the computer interpreting rows of binary code.  How are the '1' digits being interpreted and used to switch on each individual picture element?

• As white colour or no colour
• As black colour
• None of the above

Colour depth is the term used to describe .....
N.B. The term 'bit' means a binary digit e.g. '1' or '0'

• how many colours have been used to make the picture
• how many colours there in each pixel
• none of these
• the number of bits used to indicate the colour of a single pixel

Which one of the following answers best describe a limitation of this system

• Only a few colours can be displayed
• The system could not be used for simple computer games
• Only 1 colour can be displayed
• Only 2 colors can be displayed

If 3 bits were used per pixel, how many different colours could a computer show on a screen?

• 3 colours
• 4 colours
• 6 colours
• 8 colours

How many colours is the bottom picture showing given that it is using 4 bit colour depth?

• 16 colours
• 4 colours
• 256 colours
• 5 colours

What will happen to the computer file size as the colour depth is increased?

• The file size will get smaller
• There will be no change in file size
• The file size will get bigger
• None of these