2. Units, Data & Compression

Question 1

Describe the units of data storage

Answer 1

• Bit
• Nibble (4 bits)
• Byte (8 bits)
• Kilobyte (1,000 bytes or 1 KB)
• Megabyte (1,000 KB)
• Gigabyte (1,000 MB)
• Terabyte (1,000 GB)
• Petabyte (1,000 TB)

Question 2

Describe what a bit is

Answer 2

• A bit is the smallest unit of data a computer can store
• Each ‘bit’ is represented using either a 1 (true) or 0 (false)