What is the difference between single chip microcomputer and PLC?
PLC complete range of hardware devices, can be composed of various requirements to meet the needs of the control system, users do not have to design and manufacture their own hardware devices. After the hardware has been determined, the hardware of the PLC can not be changed without changing the production process or the production equipment
A single chip computer is a complete computer system that is integrated into a single chip. Even though most of his features in a small chip, but it has a need to complete the majority of computer components: CPU, memory, internal and external bus system, most will have the core. At the same time, such as communication interfaces, timers, real-time clock and other peripheral devices are integrated. And now the most powerful single chip microcomputer system can even voice, images, networks, complex input and output systems integrated into a chip.
When PLC executes a ladder diagram program, it translates it into assembly language and executes it with the interpreter (PLC adds an interpreter inside). Compared with the direct execution of assembly language user program execution ladder program a long time, but for the majority of electrical control equipment, is not worth mentioning, can fully meet the requirements of control.
Simply speaking is MCU application in electronics field like home appliance industry and some small intelligent instruments and so on PLC applied in strong fields like industrial control typical automatic control of both the same industrial production line automation control and large equipment need to use special software program
