1, different applications: digital circuits and digital electronic technology are widely used in TV, radar, communication, computer, automatic control, aerospace and other scientific and technological fields. Special analog circuit market refers to the circuits used by consumer electronic products, computers, communications, automobiles and other industrial sectors.

2. The digital logic circuit based on binary has strong reliability. The small fluctuation of power supply voltage has no influence on it, and the influence of temperature and process deviation on its reliability is far less than that of analog circuit.

3. Like analog circuits, the development of digital circuits has gone through several times, such as electron tubes, semiconductor discrete devices and integrated circuits. But it develops faster than analog circuits. Since 1960s, digital integrated devices have been made into small-scale logic devices by bipolar process. And then developed into medium-sized logic devices; At the end of 1970s, the appearance of microprocessor made a qualitative leap in the performance of digital integrated circuits.

4. Compared with analog circuits, digital circuits mainly deal with digital signals (that is, signals are expressed in two states: 0 and 1), so they have strong anti-interference ability. Digital integrated circuits have various gate circuits, flip-flops and various combinational logic circuits and sequential logic circuits composed of them.

A digital system usually consists of a control part and an operation part. Driven by the clock, the control part controls the operation part to complete the action to be executed. Digital circuits can be interconnected with analog circuits through analog-to-digital converters and digital-to-analog converters.

References:

Digital circuit (circuit for arithmetic and logical operation)-Baidu Encyclopedia

Analog Circuit (Electronic Circuit)-Baidu Encyclopedia