Electronic components

1, circuit components: diode, rheostat these

Two, the device refers to the processing plant in the production of manufacturing changed the raw material molecular formula of the commodity is called the device

1, active device, its main characteristics are :(1) its own consumption of electromagnetic energy (2) must be external switching power supply.

The resistor

The resistor in the circuit selection "R "plus digital representation, such as: R1 expression number for 1 resistor. The key functions of resistors in the circuit are: separation, overcurrent protection, divider circuit, reference point, etc.

Capacitance in the circuit is generally represented by "C" plus a number (such as C13 to express the number of capacitance 13). Capacitance is composed of two ceramic membrane close, the middle of the insulation layer material separated from the components. Capacitance is mainly characterized by communication between direct commodity circulation.

Crystal diode

Efficacy: The key characteristic of the diode is the one-sided conductivity, which means that under the action of the forward voltage, the on-off resistor is not large; The conducting resistor is huge, or infinite, at the opposite voltage effect.

inductance

circuit

Simulation analog integrated circuit refers to the capacitor, resistor, transistor and other components integrated together to solve the digital signal simulation analog integrated circuit. There are a lot of simulation analog integrated circuits, such as integrated amplifier circuit, comparator, majority and index numerical amplifier, simulation analog multiplier (division), phase locked loop, power management integrated IC, etc. The key components of analog integrated circuit are: amplifier, filter, feedback circuit, standard source circuit, power switch capacitor circuit, etc. Simulation integrated circuit design is mainly based on experience of interior designers to carry out the manual type circuit, simulation and obtain, and the relativity of large digital integrated circuit design mostly according to the application of the hardware configuration description language under the manipulation of EDA software automatic comprehensive result.

Large digital integrated circuit is a digital logic circuit or system software made by integrating components and wiring into the same integrated circuit chip. According to the total number of gate circuits or elements and devices, LSI can be divided into small-scale taxpayer integrated (SSI) circuits, medium scale integrated (MSI) circuits, scale integrated (LSI) circuits, VLSI circuits and ULSI circuits. The integrated circuit of small-scale taxpayer includes no more than 10 gate circuits or no more than 100 components; The scale integrated circuit includes the gate circuit in the middle of 10-100, or the number of components in the middle of 100-1000; Scale integrated circuits include gate circuits above 100, or the number of components in the middle of 10-10; Integrated circuit technology integrated circuit includes gate circuit above 10,000, or the number of components in the middle of 10-10; The number of components in a special scale integrated circuit is between 10 and 10. It includes: basic logic gate, trigger principle, register, decoder, controller, electronic counter, cosmetic circuit, programmable logic device, microcontroller, single-chip design, DSP and so on.