C51单片机做的驱动四线程马达的驱动程序,用于步进电机驱动!

是实验操作过程的详细讲解，有源程序即控制：转，停；正，反；快，慢；-experimental operation is the detailed talks, a source that is control : turn and stop; Now, anti-; Fast, slow;

使用CYAN单片机的ECOG1开发板连接SIM300C的GSM模块开发的短信收发程序.供UART和AT指令编程者参考-using CYAN,sim300c, to send and receive SMS.

段码LCD驱动控制器HT1621的C51程序-Code segment LCD driver controller of the C51 program HT1621

单片机Com端口仿真，有程序及仿真原理图-Com-port single-chip simulation, there are procedures and simulation schematic

NXP的mifare ultralight　数据手册, 英文版本,完成对电子标签的操作.-NXP" s data mifare ultralight manual, English version, the completion of the operation of electronic tags.

EM推出的可读写卡片EM4469，带有512bit存储空间，程序基于AVR系列单片机，可对EM4469进行读定操作-EM introduced the card can read and write EM4469, with 512bit memory space, the program series based on the AVR microcontroller, can be read on the EM4469 is scheduled to operate

STC12C5410AD温湿度采集并将模拟量通过对半查找法查表转换-STC12C5410AD simulation of temperature and humidity and the amount collected through semi-look-up table to find the conversion law

在现代电子系统中，有为数众多的IC需要进行相互之间以及与外界的通信。为了提供硬件 的效率和简化电路的设计，PHILIPS开发了一种用于内部IC控制的简单的双向两线串行总线I2C-In modern electronic systems, there are a large number of IC need each other and communicate with the outside world. In order to provide the efficiency and simplify the hardware circuit design, PHILIPS developed an IC for internal control, a simple bi-directional two-wire serial bus I2C.

Point RTOS 主要是一个针对小系统开发而设计的实时操作系统。 目前，Point RTOS 仅提供对51系列及其扩展系统单片机的支持， 针对51内核函数不能重入以及51单片机的内存空间管理方式等因素， RTOS放弃了抢先式内核的调度，而使用了时间片的调度方式，除非任务主动放弃， 否则任务将独占CPU一直运行，因而任务中必须完成对本次操作的时间片设置，即等时间的设置。-Main Point RTOS is a small system development and design of real-time operating system. At present, Point RTOS only provide for 51 series and its expansion of the system single-chip support for 51 core function should not re-entrant, as well as 51 single-chip memory space management and other factors, RTOS abandoned preemptive kernel scheduling, the use of a scheduling time slice manner, unless voluntarily chose to abandon the mission, or mission will be exclusive CPU has been running, which must be completed in the mission of this operation time slice settings, that is, the time settings.

这是用来读写DALLAS12C887的程序模块，-This is the procedure used to read and write DALLAS12C887 modules,