Introduction: STC is the world's largest 8051 microcontroller design company, providing dedicated MCU design services, high-performance STC series MCUs, and SRAM. STC stands for SysTem Chip (System Chip), which leads the development direction of the industry due to its outstanding performance. It has been rated as the world's top brand of 8051 microcontrollers and a fighter jet in 51. Its founder Yao Yongping gave it three Chinese names: Hong Kong Hongjing Technology Co., Ltd., Shenzhen Hongjing Technology Co., Ltd., and Nantong Guoxin Microelectronics Co., Ltd. Is STM8 really enough to surpass STC15? In terms of performance and price comparison, STM8 is the preferred choice, while STC15 has a higher price and fewer resources compared to STM8. STC Macro Crystal official website: www.stcmcuidata.com.