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Bits, bytes, and symbols

Bits, bytes, and symbols

Diagram showing a bit with values 0 or 1, a byte as eight bits 01000001, and a byte prefix ladder from B to kB, MB, GB and TB with divide by 1000 upward to larger units and multiply by 1000 downward to smaller units

Computers store data, so we need units to describe how much information there is. The smallest unit is the bit, and a bit can only be 0 or 1.

Units of information Lesson

  1. GCSE
  2. /Computer Science
  3. /Units of information

Step-by-step lessons on AQA GCSE Computer Science Units of information. Each one builds up to exam-style questions. Build strong foundations in binary, logic and core programming constructs before moving on to the more complex algorithm design and evaluation questions.

Lessons