simulators

Ideas you can poke

Each simulator teaches one syllabus idea by letting you drive it. No account needed; they pair with the theory pages on educs.me.

• A1.1.5

  The CPU cycle

  Step the fetch-decode-execute cycle register by register — the exact sequence exams ask for, with the buses lighting up as data moves.

• A1.2

  Binary & logic gates

  Flip real bits, race base conversions against your best streak, and prove the seven gates with truth tables you can test against a live circuit.

• B2.4

  Sorting & searching

  Bubble, selection, linear, binary — one comparison at a time, with a predict-the-next-move mode that mirrors exam trace tables.

• A2.3

  The packet journey

  One message, many packets, independent roads. Toggle loss, watch retransmission, and see out-of-order arrival reassemble itself.

• A4

  Machine learning

  Train a classifier and watch its decision boundary move — then meet the loan dataset where high accuracy quietly hides real unfairness.