quartz/content/notes/sequential-circuits.md

title	aliases	tags
sequential-circuits		cosc204

combinatorial-logic-circuits always produce the same outputs given the same input. Sequential curcuits on the other hand, produce different outputs depending on past history and the inputs.

There are two main types of sequential circuit

• Sychronous
  • this is when changes of state occur in time with a clock cycle
  • changes of input occur between clock pulses
  • state changes occur at the clock pulses
• Asynchronous
  • state changes occur as the inputs occur
  • event driven

Main circuits

SR latch

The set reset latch is the most basic and simple sequential circuit