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From combinational to sequential logic

From combinational to sequential logic

Comparison of combinational logic and sequential logic, showing memory and a clock in the sequential block

Combinational logic responds only to the inputs at that moment, but sequential logic also depends on the circuit's stored state. That stored state acts like memory, so the same input can give a different output depending on what happened earlier.

Sequential logic (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Sequential logic (A-level only)

Step-by-step lessons on AQA A Level Physics Sequential logic (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons