C51的入门教程，适合刚刚接触C51的开发人员学习使用。-C51 introductory tutorial, just contact C51 for the development staff to learn how to use.

C51单片机程序教程PPT，对你学习C语言单片机有很好的效果-C51 microcontroller program tutorial PPT, you learn C language is very effective SCM

本文件为KEIL C51的使用说明，包括KEIL C51中文使用手册，uVision入门教程，及Keil 环境下使用存储器区切换功能等。-This document provides instructions for use KEIL C51, including KEIL C51 Chinese user manual, uVision Tutorial, and Keil environment under memory-off function.