The microcontroller was born in the 1970s and has a history of fifty years of development. Today, microcontrollers are used in a wide range of fields, such as smart meters, real-time industrial control, communication equipment, navigation systems, household appliances and so on. Once a variety of products with a microcontroller, it can play a role in upgrading the effectiveness of the product, often in the name of the product before the word "intelligent", so what are the advantages of a microcontroller? Can achieve so many electronic products needed to function it.
           What are the advantages of microcontrollers
        The current variety of microcontrollers, the overall summary of the following advantages:

1, small size, high integration, light weight

        Microcontroller in the crystal chip integration of various functional components, a high degree of integration, the size of the natural minimum. The chip itself is designed according to the requirements of the industrial measurement and control environment, the internal wiring is very short, and its resistance to industrial noise is better than the general CPU. microcontroller program descriptions, constants and tables cured in ROM is not easy to damage, many signal channels in the chip, so high reliability.

2、Strong control function

        In order to meet the control requirements of the object, the instruction system conditions of the microcontroller are very rich: branch transfer capability, logic operation of the I/O port and position processing capability, which is very suitable for special control functions.

3. Single power supply and low power consumption

        In order to meet the widespread use of portable systems, many microcontrollers have an operating voltage of only 1.8V~3.6V, while the operating current is only a few hundred microamps. And nowadays, the development direction of microcontroller power consumption has been moving in the direction of low power consumption, microcontroller low power consumption is also a major advantage.

4, easy to expand

        The microcontroller has the components needed for the normal operation of the computer. Its external has many three buses and parallel, serial input / output pins, can easily form a variety of computer applications of various sizes.

5、Cheap and cost effective

        The performance of the microcontroller is very high. To increase speed and operational efficiency, microcontrollers have begun to use RISC assembly lines and DSP technology. The location search capability of microcontrollers also exceeds the limit of 64KB, some can reach 1MB and 16MB, the ROM capacity in movies can reach 62MB and the RAM capacity can reach 2MB. due to the widespread use of microcontrollers, the sales volume is high and the commercial competition from major companies makes the price very low and its performance to price ratio is very high.