Negative numbers in binary
Two's complement, where the left bit is worth a negative number, and subtraction by adding. Needed for Edexcel 1CP2 and for A-level.
You will be able to
- Convert between denary and two's complement
- Give the range of n-bit two's complement
- Subtract by adding a two's complement number
- Carry out an arithmetic right shift
- Explain the limits of a fixed number of bits
20 minutes, 10 exam-style questions.