Preliminary understanding of circuit design, IC design and PCB design

Circuit Design: This is a very big concept, from the voltage intensity can be divided into strong electric circuit design and Weak Current Circuit Design; from the design tool can be divided into manual drawing and electronic auxiliary design, the circuit types can be divided into analog circuit design and digital circuit design.

Icdesign: The IC Design refers to the chip design, that is, the design of the circuit on a crystalline silicon chip, which requires a high process and technology. The current IC design software can automatically generate circuit diagrams based on the principle diagram (VHL and other languages), and then deliver them to the IC manufacturer for production.

PCB design: Printed Circuit Board Design refers to the connection of resistance, inductance, capacitance, transistor, diode and various chips with wires based on the existing IC chip interface specifications, currently, PCB design software can automatically generate PCB wiring according to the principle diagram. Then, you can submit it to the PCB manufacturer for production. A PCB can be divided into one, two,... and so on. The more layers, the more complicated the design.

Digital Circuit and analog circuit: The difference between the two is not the chip size, the circuit is fine, but the circuit logic, that is, how to use the circuit. The analog circuit uses the size of voltage (or current) to represent the input and output results. The total voltage of a digital circuit is interpreted as 1 or 0, which is a relative concept. The integrated circuit has both analog and digital circuits. Of course, there are more digital circuits.