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What is it?
A tiny computer on a chip. It has a processor, memory, and — most importantly — pins that connect to the physical world. Read inputs. Control outputs. That's engineering thinking.
The Simple Analogy
“A tiny brain that can sense the world and control things in it.”
All Concepts
What is Electricity?What is Voltage?What is Current?What is Resistance?What is a Resistor?What is a Diode?What is an LED?What is a Capacitor?What is a Transistor?What is a Microcontroller?What is an Electron?What is a Conductor?What is an Insulator?What is Electrical Isolation?What is a Battery?What is an Arduino Board?What is a Switch?What is a Circuit?What is Transconductance?What is Frequency?What is a Signal?