1, AVR microcontroller and 8051 comparison: The main difference is that the kernel is different, the instruction set is different, the io structure is different, and the peripherals are different. The advantages are fast speed, strong IO and high cost performance. The AVR microcontroller has much more hardware resources than the 8051. The MEGA series in the AVR monolith also has an AD converter inside, in some simple circuits. With the AVR microcontroller is even a zero external component, very convenient to use, is the mainstream microcontroller, and the price is not expensive! 2. The STC is an improved 51. The internal EEPROM is very convenient for parameter saving, EMC performance is better, and the price is relatively cheap. PIC is its own structure, MICROCHIP development AVR is its own structure, developed by ATMEL 3, 8051 MCU: 8051 MCU was first introduced by INTEL, after which many companies purchased the 8051 core, making the 8051 core MCU series MCU has the largest output in the world and the most widely used. ATMEL's AVR microcontroller is an enhanced RISC internal FLASH microcontroller. The FLASH memory on the chip is attached to the user's product. Time programming and reprogramming make the user's product design easy and easy to update. AVR microcontroller adopts enhanced RISC structure to make it have high speed. The ability to execute complex instructions in one clock cycle can achieve 1 MIPS of processing power per MHz. The operating voltage of the AVR microcontroller is 2.7~6.0V, can optimize power consumption. MICROCHIP MCU: The main products of MICROCHIP MCU are PIC 16C series and 17C series 8-bit MCUs. The CPU adopts RISC structure. There are only 33, 35, 58 instructions, respectively, using Harvard dual bus structure, fast running speed, low working voltage, low power consumption, large input and output straight Drive capacity, low price, one-time programming, small size. KNB1-63 Miniature Circuit Breaker
KNB1-63 Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.
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