Audio Visual - B & W Image & Data Representation

Multiple Choice

What is Binary?

• A system that uses 10 digits

• A system that uses 2 digits

• A system that uses 8 digits

• A system that uses 16 digits

Multiple Choice

What is Denary?

• A system that uses 2 digits

• A system that uses 8 digits

• A system that uses 16 digits

• A system that uses 10 digits

Multiple Choice

What are the Binary Digits 0 and 1 called?

• Units

• Bytes

• Bits

• Nibbles

Multiple Choice

What is meant by Data Representation?

• Data representation refers to the visual display of data in charts and graphs.
• How data is organized and represented in a way that computers can understand and process.

• Data representation is the process of deleting unnecessary data from a database.
• Data representation is the physical storage of data on a hard drive.

Multiple Choice

What is a pixel?

• A type of computer memory

• The smallest unit of a digital image (tiny square)

• A programming function

• A colour format

Multiple Choice

How are colours stored in a computer?

• Using numbers and letters

• As shades of grey only

• In a hexadecimal format

• Using pixels and numeric codes

Multiple Choice

What is colour depth?

• The number of colours that can be represented in an image
• How deep you can go with certain greys and blues
• A high concentration of pixels
• How many deep colours you can show

Multiple Choice

How many colours are used to create this image?

• 3

• 4

• 5

• 8

Multiple Choice

How many pixels would a 20x20 image have?

• 100
• 200
• 400
• 800

RESOLUTION CALCULATION:

Resolution refers to the number of pixels in an image, often described as width × height (e.g., 1920 × 1080).

Higher resolution means more detail, but it also increases the file size since more pixels need to be stored.

FILE SIZE CALCULATION:

File Size (in bits) = Width (in pixels) × Height (in pixels)× Colour Depth (in bits)

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Fill in the Blanks

Multiple Choice

How many unique colours are used in this image?

• 2

• 3

• 4

• 8

Multiple Choice

This grid has 21 columns and 18 rows.

How many pixels are used to represent the image?

• 480

• 378

• 256

• 118

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