CAN总线与51单片机的接口原理图，使用的是sja1000和tja1040(philips).还包括了具体的文档资料和c语言控制代码(附加了LCD代码和LCD接...

IC卡读写程序,内有终端PCB及原理图.爱好者可以看一下.也许会有所帮助.-IC card reading and writing process, there are terminal PCB and schematic. Lovers can look at. Maybe be helpful.

三相步进电机的三相六拍工作方式，正转的绕组通电顺序：A、AB、B、BC、C、CA、A，反转的通电顺序：A、AC、C、CB、B、BA、B、A。 由于步进电机转子有一定的惯性以及所带负载的惯性，故步进电机的工作过程中不能及时的启动和停止，在启动时应慢慢的加速到预定速度，在停止前应逐渐减速到停止，否则，将产生失步现象。 步进电机的控制问题可总结为两点： 1、产生工作方式需要的时序脉冲； 2、控制步进电机的速度，使它始终遵循加速、匀速、减速的规律工作。 -Three-phase three-phase stepper motor six shot work, is to order the winding power: A, AB, B, BC, C, CA, A, reverse the order of power: A, AC, C, CB, B, BA, B, A. As the stepper motor rotor has a certain degree of inertia, as well as brought about by the inertia load, the stepper motor during the course of work should not start and stop time, start to be slowly accelerated to a predetermined speed, the stop should be to slow down gradually to the stop, otherwise, will result in out-of-step phenomenon. Stepper motor control problems can be summarized in two points: one, resulting in the need to work the timing pulse 2, control the speed of stepper motor, so that it always followed acceleration, velocity, deceleration of the law of the work.

用单片机做的数字万年历，基于MAX12887数字时钟芯片和MAX7219芯片。-Done with single-chip digital calendar, digital clock MAX12887-based chip and MAX7219 chip.

让您通过VB介面，简易地测试8051上面的40Hz的RF通讯。

With the program AD9854C.exe one can set and tune the frequency in CW-mode. For use as a receiver LO also IF can be given and the both possible receiving frequencies are printed on the screen. The level in Q-outputs can be varied by giving the wanted attenuation in dB. This function is done by controlling a 12b digital multiplier in the device. In this case the level decreases somewhat with increasing frequency as it does in DDS devices. Alternatively the inverse sinc correction can be chosen, in which case the output is flat and high. -With the program AD9854C.exe one can set and tune the frequency in CW-mode. For use as a receiver LO also IF can be given and the both possible receiving frequencies are printed on the screen. The level in Q-outputs can be varied by giving the wanted attenuation in dB. This function is done by controlling a 12b digital multiplier in the device. In this case the level decreases somewhat with increasing frequency as it does in DDS devices. Alternatively t

串口通信的单片机程序51单片机串口调试程序一例-Microcontroller serial communication program 51 MCU serial debugger one cases

RS485的C51程序 中断 寄存器设置 接收和发送数据，希望对大家有用-RS485 interrupt register of the C51 program set to receive and send data, in the hope that useful

串行数码管显示，PCF8563实时时钟芯片使用源程序。在keil环境下编写。-Serial digital tube display, PCF8563 real time clock chip, the use of source code. Keil environment in the preparation.

单片机实例，报告，很多的应用实例，对于初级单片机程序员有很大作用-Singlechip example, reports, a lot of application examples for the primary single-chip programmer plays a significant role in

protel99se的十来个元器件库文件。希望对大家画图的时候能起到帮助。-Protel99SE library file of a dozen components. Wish to draw a time when everyone can help.