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Unit 4 · 5 lessons

Electronics and Digital Logic

Ohm's law, real components, series and parallel circuits, and the logic gates that turn voltages into decisions.

  • 49 practice questions
  • 50 flashcards
  • 3 interactive lessons
Start lesson 1 →Unit 4 test review →

Lessons

  1. 1Voltage, Current, Resistance and PowerThe four quantities every circuit question is built from, the one equation linking them, and how to work safely.Interactive10 questions
  2. 2Components and Schematic DiagramsReading a schematic, identifying real parts, and knowing what each one does in a circuit.9 questions
  3. 3Series, Parallel and Voltage DividersHow resistance, current and voltage behave in each arrangement, and the divider circuit behind every analog sensor.Interactive10 questions
  4. 4Logic Gates and Truth TablesHow voltages become true and false, the seven gates that combine them, and how to describe any circuit with a truth table.Interactive10 questions
  5. 5Boolean Algebra and SimplificationThe rules for manipulating logic expressions, De Morgan's theorems, and why simplifying saves real money.10 questions