Image representation

In Unicode and ASCII, each character is represented by a number.

• YES

• NO

Which can represent more characters? ASCII or UNICODE

• ASCII

• UNICODE

• BOTH THE SAME

What are the individual elements in the image called?

• 
  Resolutions

• Sample frequency

• Pixels

• Image dots

There are 448 individual elements in this image. What is this number called?

• Pixels

• Pictures

• Image dots

• Resolution

A bitmap image is made up of

• Colours

• Pixels

• Sounds

• Samples

• Characters

Computers create many colours from:

• Red, white, blue.

• Black, white, green.

• Red, pink, yellow

• Red, green, blue.

Which of these are the correct place values for binary?

• 1,0

• 128,64,32,16,8,4,2,1

• 
  0,1

• 128, 68,34,12,6,4,2,1

Why do computer process data in binary form?

• Because it is easier for human beings to understand

• Because computers contain circuits with switches which have multiple states

• Because computers contain circuits with switches which have two states (on and off)

• 
  Because data in decimal form is processed more slowly