Electronic components are the fundamental building blocks used to design and manufacture electronic circuits. They are generally categorized into two main types: **Passive** and **Active** components. --- ## 1. Categorization of Electronic Parts ### Active Components These components require an external power source to operate and can inject power into a circuit or control the flow of electricity. They are capable of amplification and switching. | Component | Function | Common Usage | | :--- | :--- | :--- | | **Transistor** | Switches or amplifies signals. | CPUs, Radios, Amplifiers | | **Diode** | Allows current to flow in one direction only. | Rectifiers, Overvoltage protection | | **Integrated Circuit (IC)** | A complex circuit miniaturized onto a chip. | Microcontrollers, Logic gates | ### Passive Components These components do not require a power source to function and cannot amplify a signal. They store or dissipate energy. | Component | Function | Measurement Unit | | :--- | :--- | :--- | | **Resistor** | Limits the flow of electrical current. | Ohms (Ω) | | **Capacitor** | Stores electrical energy in an electric field. | Farads (F) | | **Inductor** | Stores energy in a magnetic field. | Henrys (H) | --- ## 2. Electromechanical and Connection Parts Beyond active and passive parts, a functional device requires hardware to connect and control the flow physically: * **Switches:** Manually interrupt or divert current. * **Connectors:** Join wire leads or boards together. * **Relays:** Electrically operated switches. * **Crystals:** Provide precise clock signals for timing. --- ## 3. Basic Circuit Example To understand how these work together, consider a simple LED circuit: ```python # Conceptual Logic of an LED Circuit power_source = 5.0 # Volts resistor_value = 220 # Ohms (to limit current) led_status = "ON" # Component emitting light if voltage > threshold: current_flow = True ``` ---