Electrical Engineering › Section T · Combinational logic › Topic T.3
Comparators, decoders, encoders, and code converters
A thermostat compares two numbers, a memory chip picks one location out of millions, a keypad turns a pressed key into a code and a display turns a code back into a digit. Four families of combinational building blocks do these jobs.
In this topic
- Equality comparators
- Magnitude comparators
- Worked example: comparing and cascading
- Decoders
- Worked example: a 3-line-to-8-line decoder
- BCD and 7-segment decoders
- Encoders and priority
- Worked example: a priority encoder
- Code converters
- Common mistakes to avoid
- Key takeaways
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