Year 9 Revision - Binary

Identify the unique digits used in binary

• 1, 2.

• 0, 1.

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.

Identify the number system that we use in everyday life.

• Binary

• Denary

• Decimal

• Hexadecimal

Identify the two items that computers use binary to represent.

• Data and Instructions

• Numbers and Letters

• Temperature and Pressure

• Thoughts and Feelings

Identify a reason for using hexadecimal numbers

• Takes up less storage space.

• Requires less bits.

• Useful shorthand for humans to understand long binary numbers.

• Quicker for a computer to process.

How many bits are represented by a single hexadecimal digit

• 8

• 4

• 2

• 1

Identify the binary representation of 76

• 0100 1100

• 1100 0100

• 0011 0010

• 0100 1101

Identify the binary representation of 127

• 1111 1110

• 1110 1111

• 1111 0111

• 0111 1111

Identify the key term from this definition:

"Tiny dot of colour in a bitmap image"

• Bit depth

• Colour depth

• Pixel

• Sample

Besides the width x height (pixels), identify the other way of stating the size of an image.

• Megabits

• Megapixels

• Microbits

• Micropixels

Identify the key term from this definition:

"Number of bits used to store the colour value".

• Bit depth

• Bit Rate

• Colour Depth

• Sample Rate