51单片机读写usb移动硬盘。提供全套资料，原理图，固件源代码。-usb mass storage module

PIC4455 ADC源代码，用于PICC18编译器，PIC16系列不适用

一个用51MCU做电流表的产品.源代码.电流精度达到1MA有级别.-Ammeter used to do a 51MCU products. The source code. Current accuracy level 1mA there.

跑马灯程序，24个口全用-5,250 procedures, 24 throughout the mouth

c51单片机实验程序代码--流水灯、时钟、液晶驱动，串口异步通信、AD、DA、ROM 扩展、IO扩展等等，附原理图，对初学者很有帮助。-C51 single-chip experimental procedure code- water lights, clock, LCD driver, serial asynchronous communication, AD, DA, ROM expansion, IO expansion and so on, with schematic diagram, useful for beginners.

利用LPC2131做的ZLG7290显示程序，采用IIC总线！-LPC2131 make use of the ZLG7290 display procedures, the use of IIC bus!

嵌入式系统已经广泛应用于各个科技领域和日常生活的每个角落，由于其本身的特性，使得我们很难发现它的存在。甚至一些从事嵌入式系统开发的科技人员也只知单片机，不知道嵌入式系统。本节从嵌入式系统的定义开始，阐述嵌入式系统的含义、特点等，以使读者加深对嵌入式系统的理解。 -Embedded systems are widely used in various fields of science and technology and everyday life in every corner, due to its own characteristics, making it very difficult for us to discover its existence. Embedded systems and even some involved in the development of scientific and technical personnel are also only single-chip, embedded systems do not know. This section from the beginning of the definition of embedded systems, embedded systems on the meaning, characteristics and so on, in order to enable readers to deepen their understanding of embedded systems.

用于串口的输入输出调试，可用于单片机及PC机上实现。-Serial input and output for debugging, can be used for single-chip microcomputer and PC machines realize.

8051系列单片机C程序设计完全手册和一些简单的c程序-8051 Series Single-chip C programming manual and complete some simple c program

MODBUS通信协议MODBUS源代码最初是MODICON为自己生产的PLC（可编程逻辑控制器）协议而开发的，后来广泛应用于工业部门，这是一对多的通信方式，他的方式是免费开放的，任何人都可以开发，这么多的PLC，人机界面和控制软件有支持方案。