Y9 Binary-Image Rep

Modern computers work in binary because it is easy to represent two states in simple electronic circuits. Binary is a...

• ...base 2 number system with 2 symbols

• ...base 6 number system with 6 symbols

• ...base 10 number system with 10 symbols

• ...base 4 number system with 4 symbols

A pixel is one dot in an image. The number of bits per pixel determines...

• how many colours each dot can represent

• how many dots each dot can represent

• how many shades each dot can represent

• how many pixels each dot can represent

The more bits per pixel the greater the...

• pixel depth

• colour depth

• dot depth

What is the file size in bytes of this image? (Just enter the number)

In a bitmap graphic each pixel is represented in _______

• Denary

• Binary

• Hexadecimal

• By letters

How many bits per pixel do you need to make 4 colours?

• colour depth of 1 bit

• colour depth of 2 bit

• colour depth of 3 bit

• colour depth of 4 bit

A bitmap image is made up of

• Pixels
• Colours
• Sounds
• Samples
• Characters

Increasing the colour depth means…

• A bigger range of colours can be used for each pixel
• More pixels are in the image.
• More colours are in the image.
• Darker colours

How many colours can be used for each pixel if the colour depth is 4 bit?

How many colours can be used for each pixel if the colour depth is 8 bit?

• 8 colours
• 9 colours
• 255 colours
• 256 colours