We often hear that the recruitment requirements of the company are embedded software engineers or embedded hardware engineers, that is, embedded systems include software and hardware. At the same time, in order to ensure the stability and reliability of the system.
This is because embedded systems are generally used in industrial control, that is, the control of peripherals is dead, and there is no need for manual intervention. Some embedded systems also include operating systems, but most embedded systems realize the whole control logic by a single program. In fact, all devices with digital interfaces, such as watches, microwave ovens, video recorders, automobiles, etc., use embedded systems. Generally, an embedded system is an embedded processor control board whose control program is stored in ROM. IEEE (Institute of electrical and Electronics Engineers) defines embedded system as “a device used to control, monitor or assist in the operation of machines and equipment”.Įmbedded system is a special computer system, which is a part of device or equipment. It refers to application-centered, computer technology-based, software and hardware can be tailored, and its user applications have great impact on function, reliability, cost, volume Special computer system with special requirements for power consumption and use environment. Embedded system is a system that combines application program, operating system and computer hardware. So what is embedded? Generally speaking, embedded system refers to embedded system. Of course, their performance is very powerful, but their function is still very single. DSP chip can also be considered as a single chip microcomputer. That is, the MCU really has the surname “Shan”. The first mock exam is the single module of computing, logic control and communication. This is the MCU development board that many companies are doing on the market. Such as buttons, LED lights, LED screens, buzzers, and various sensors. In order to realize the application of single chip microcomputer, other peripherals must be added. Of course, the minimum system can only ensure the normal operation of single chip microcomputer, and can hardly realize any application based on single chip microcomputer. Other minimum systems, such as single chip microcomputer, add other components for the normal operation of single chip microcomputer, such as crystal oscillator, 5V power supply, inductance and resistance, etc. Later, I learned that it is the limitation of the single chip microcomputer material.įor single chip microcomputer, in fact, a chip is all. When I first came into contact with the single chip microcomputer, I once had a question why the single chip microcomputer is black and can not be other colors.
From the 1980s, from the 4-bit and 8-bit single chip microcomputer at that time to the current 300m high-speed single chip microcomputer.įor example, the most classic 51 series single chip microcomputer, as shown in the figure below, looks like a cuboid chip the size of a thumb, with a total of 40 pins, which contains a logic operation unit.
It uses VLSI technology to integrate the functions of CPU with data processing ability, ram, ROM, various I / O ports, interrupt system, timer / counter (possibly including display driver circuit, pulse width modulation circuit Analog multiplexer, a / D converter and other circuits) are integrated into a silicon chip to form a small and perfect microcomputer system, which is widely used in the field of industrial control. Single chip microcomputer is an integrated circuit chip. Next, let’s talk about my understanding and perception of these two concepts.įirst of all, define the concept of single chip microcomputer.
For developers who have developed MCU and embedded, they have their own definitions. In fact, there is no standard definition to distinguish MCU and embedded.