Electronics
Components, circuits and systems that process signals and information — from resistors and diodes to microcontrollers and communication links.
Electronics is about controlling the flow of electrons to process information: amplify a signal, switch a load, store a bit, measure a temperature, send data over the air.
This domain starts with fundamentals and passive components, then goes into semiconductors, amplifiers, op-amps, oscillators, power supplies, digital electronics, microcontrollers, communication protocols and systems, signals and systems, sensors, PCB design and test and measurement.
Subjects (15)
Electronics Fundamentals
Charge, current, voltage, resistance and power — the quantities every circuit is built on.
Passive Components
Resistors, capacitors, inductors and transformers — components that do not amplify, but shape every circuit.
Semiconductors
Materials between conductors and insulators — the basis of diodes, transistors and integrated circuits.
Amplifiers
Circuits that increase the power of a signal, built from transistors in a handful of standard configurations.
Operational Amplifiers
Op-amps: high-gain differential amplifiers that, with feedback, build almost any analog function.
Oscillators and Timers
Circuits that generate periodic waveforms — sine, square and triangle — and set the timing of digital systems.
Power Supplies
Convert mains or battery power into the clean, stable DC voltages electronics need.
Digital Electronics
Circuits that work with two levels — 0 and 1 — from logic gates to flip-flops, counters, memories and converters.
Microcontrollers
Tiny computers on a single chip — CPU, memory and peripherals — that control almost every electronic device.
Communication Protocols
UART, I2C, SPI, CAN, USB and more — how chips and devices exchange data.
Communication Systems
How information travels over wires and through the air: modulation, noise, antennas and wireless standards.
Signals and Systems
Mathematical tools to describe signals and how systems change them: convolution, Fourier, Laplace and z-transforms.
Sensors and Transducers
Devices that convert physical quantities — temperature, light, motion, distance, force — into electrical signals.
PCB Design
Turn a schematic into a manufacturable printed circuit board — layout, routing, grounding and fabrication files.
Test and Measurement
Using multimeters, oscilloscopes, logic analysers and signal generators to see what a circuit is really doing.
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