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Bases, bits and place values

Bases, bits and place values

8-bit binary place values with 01001111 mapped to denary 79, hexadecimal 4F, and a comparison of sign-and-magnitude with two's complement layouts

A bit is a binary digit, so it can only be 0 or 1. A base, or radix, tells you how many digit symbols are available before place value moves left.

Mathematical skills Lesson

  1. A Level
  2. /Computer Science
  3. /Mathematical skills

Step-by-step lessons on OCR A Level Computer Science Mathematical skills, covering Mathematical skills. Each one builds up to exam-style questions.