Principle of single chip microcomputer

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Principle of single chip microcomputer [Copy link]

A single-chip microcomputer is a simplified microcomputer. The CPU itself has ROM and RAM memory. The CPU also has a bus inside the chip. IC (integrated circuit) technology is to make circuits on a silicon substrate through special processes and encapsulate them into chips, such as CPU, off-chip memory, etc.

The single-chip CPU (such as the 51 series), crystal oscillator, memory, address latch, logic gate, seven-segment decoder (display), button (similar to keyboard), expansion chip, interface, etc. are made on the epoxy resin board through PCB technology (such as SMT patch, or plug-in). This is a complete single-chip (made on a PCB board) microcomputer.

Some also have watchdogs, CAN controllers/transceivers, A/D, D/A conversion, PWM pulse width modulation, filtering, PID signal processing and many other additional links.

Let me correct one point. Not all electronic controls use single-chip microcomputers.
In the field of high-performance digital and image signal processing, the use of DSP has begun to increase.
In factory processing, testing, and experimental equipment, especially in sequential control, PLC is used more.
In cement plants and chemical plants, DCS is used more.
In situations where the amount of calculation is extremely complex, PC control is used directly.
In the field bus, the host computer is also a PC.
In the control and signal processing of limited resources such as household appliances (such as microwave ovens) and mobile phones, Sun's Java embedded chips are used with J2ME function libraries for application development.

SixTwo

How to say it! Actually, our PC can be regarded as a complex single-chip microcomputer. This is what I think! The internal structure of a single-chip microcomputer is divided into 8 parts: 1. Microprocessor: (1) Arithmetic unit (2) Controller 2. Internal data memory (RAM) 3. Internal program memory (ROM) 4. Timer/Counter 5. Parallel I/O port 6. Serial port 7. Interrupt control system 8. Clock circuit Our PC also has the same structure as a single-chip microcomputer. It's just that our computer is more powerful, which is unnecessary for simple control in engineering.