MCS-51单片机结构。由ATMEL公司生产的89C51将EPROM改成了4K的闪速存储器，他们的结构大同小异，本章将对8051单片机的结构作一介绍。-MCS-51 single-chip structure. ATMEL Corporation by 89C51 production will be replaced with 4K of EPROM flash memory, they more or less the same structure, this chapter will be

关于89C51单片机的介绍，包含单片机的内核，寄存器，以及中断，是单片机入门级的资料-the introduction about 89C51 MCU, this file includes the introduction of core, special function register, and intrruption

关于ds18b20和单片机89c51的介绍-On the introduction of ds18b20 and microcontroller 89c51