Comparison of various microcontrollers

(1) MCS-51 is the mainstream product. 
(2) MSP430 has strong functions. It is a Flash microcontroller with ultra-low power consumption. It is mainly used in three-meter and ultra-low power consumption occasions. 
(3) EM78 series microcontrollers are manufactured using high-speed CMOS technology and are designed to be low-power products with low prices. They have three interrupt sources, R-OPTION function, I/O wake-up function, multi-function I/O port, etc. They have excellent data processing performance and are designed with RISC structure. 
(4) PIC series 8-bit microcontrollers are products of Microship. The CPU adopts RISC structure, runs fast, and is low in price, suitable for products with large usage, low grade, and price sensitivity. 
(5) M6800 is a product of Motorola. Motorola is one of the largest microcontroller manufacturers in the world, with a full range of products, a wide range of choices, and many new products. Its characteristics are low noise, strong anti-interference ability, and it is more suitable for industrial control fields and harsh environments. 
(6) AVR is a single-chip microcomputer with built-in Flash that enhances RISC. All 32 registers inside the single-chip microcomputer are directly connected to the ALU, breaking through the bottleneck limitation. It can achieve 1MIPS processing power per 1MHz, and is a high-speed, low-power product. The port has a strong load capacity and can directly drive LEDs. It supports ISP and IAP, and has strong I/O port driving capabilities.