5. Binary and pixels

Multiple Choice

What is the purpose of binary in representing pixels?

• To create graphics

• To store text

• To enhance audio

• To improve video quality

Multiple Choice

Which of the following best describes bitmapped graphics?

• They are composed of paths defined by mathematical expressions.

• They are composed of a grid of individual pixels.

• They are always vector-based.

• They cannot display colours.

Multiple Choice

What is the binary representation of a pixel in a black and white bitmap image?

• 1 (black)

• 0 (white)

• 1 (white)

• 0 (black)

Multiple Choice

To store an image on a computer, the image is broken down into tiny elements called _______________.

• pixels

• picture boxes

• squares

Multiple Select

Sam is creating a program to calculate and display the total cost of laying new flooring.

Sam takes pictures of floor layouts using a tablet device.

The images are stored as bit-mapped images.

Choose two correct statements about how a bit-mapped image would be stored.

• Images are represented by pixels

• Each pixel has a binary value representing its colour

• Images are represented by objects with attributes

• Images usually take up a small amount of storage space

Multiple Choice

What is a binary word?

• A collection of 1s and 0s

• A type of font

• A computer program

• A graphic design technique

Multiple Choice

What is a bitmap image?

• An image made up of text

• An image made up of pixels

• An image made up of shapes

• An image made up of numbers

Multiple Choice

What does the binary sequence 100000011100011101010110100001100001 represent in the context of the image?

• A character

• A color

• A shape

• A number

Multiple Choice

What is the binary representation of the decimal number 255?

• 11111110

• 11111111

• 11111101

• 11111100

Multiple Choice

What is the decimal equivalent of the binary number 00001101?

• 11

• 12

• 13

• 14

Multiple Choice

What does the binary sequence represent in the context of the image?

• A character

• A color

• A sound

• A shape

Drag and Drop

The smallest addressable dot in a digital image or display.​

Placeholder

A way to store images as a grid where each cell holds a colour value.​

Placeholder

The total number of picture elements across and down (e.g., 1920×1080); higher means more detail.​

Placeholder

A fixed-length sequence of bits treated as a unit (e.g., 8, 16, 32 bits).​

Placeholder

The base-2 number system using only 0 and 1 to represent data.​

Placeholder

Drag these tiles and drop them in the correct blank above

Pixel

Bitmap

Resolution

Binary word

Binary

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident