Binary Bits & Bobs 2

ASCII is:

• a numerical system that has 2 rather than 10 as a base.

• the most common format for text files in computers and on the Internet

In an ASCII file, each alphabetic, numeric, or special character is represented with a 7-bit binary number (a string of seven 0s or 1s).

True or False

• True

• False

Upper and lower case letters have a different ASCII code.

True or False

• True

• False

What is the ASCII code for ... U?

• 55

• 85

• 68

• 87

What is the following word ... 79 70 70

• ON

• OFF

• OR

• ONE

What is the following word ... 67 65 84

• COT

• BAT

• CAR

• CAT

What is the ASCII code for ... E?

• 45

• 68

• 69

• 70

What is a pixel?

• A tiny piece of music

• A tiny square of colour

• A tiny circle of colour

• A tiny triangle of colour.

Each pixel has its own binary number, what does this tell the computer?

• Where the pixel is located.

• Which user can see the pixel.

• What colour the pixel should be.

• How much storage is in the pixel.

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How do we represent more colours other than black and white in our images?

• We use more bits per pixel

• We stop using binary

• We just type the colour in that we want

• We just type the colour in that we want

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