Y9 T2 Data Representation 2

________ is used to make file sizes smaller

• Saving

• Compression

• Colour Depth

• Resolution

The number of pixels on an image, the more pixels the sharper/clearer the image

• Resolution

• Colour Depth

• Compression

• Sample Size

Used to Capture Sound

• Speaker

• Mouse

• Monitor

• Microphone

Used to Generate Sound

• Speaker

• Mouse

• Monitor

• Microphone

We capture sound with a microphone. A microphone .....

• converts sound into electricity

• converts electricity into sound

• converts sound into binary digits

• converts binary digits into sound

We generate sound with a speaker. A speaker .....

• converts sound into electricity

• converts electricity into sound

• converts sound into binary digits

• converts binary digits into sound

The number of samples taken per second is called the  

• Bit depth

• sampling size

• sampling rate

• Sample ratio

The number of bits recorded per sample is called the  

• Bit depth

• sampling size

• sampling rate

• Sample ratio

How many colours can 3 bits show

• 2

• 4

• 8

• 16

If a picture was 600 x 400 the resolution would be

• 600 x 400 = 240,000 bits

• 600 x 400 = 240,000 pixels

• 600 x 400 = 240,000 bytes

• It has 600 pixels and 400 colours