a PWM duty cycle output procedures EM78P458 applications through debugging

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Elan eKTP8733N单片机开发程序，用于驱动SPI接口。在Elan 公司开发环境中使用。-Elan eKTP8733N single-chip development process, used to drive SPI interface. Elan has developed in the environment.

基于５１单片机的乘法运算程序-SCM multiplication procedure

电动读卡器IC卡SI4442读写模块源代码-Reader IC card SI4442 R/W Module source code

Keil70完全安装文件-Keil70 complete installation

实现公历与农历的转换一般采用查表法按日查表是速度最快的方法但51 单片机寻址能力有限不可能采用 按日查表的方法除按日查外我们可以通过按月查表和按年查表的方法再通过适当的计算来确定公历日所对应的 农历日期本文采用的是按年查表法最大限度地减少表格所占的程序空间-Limited can not be used In addition to a daily look-up table method of daily things that we can search through monthly and annual look-up table look-up table method and through the appropriate calculations to determine the calendar day corresponding to the Lunar date of this paper is the annual table look-up table method to minimize the space occupied by program

Floating point library for the 8052.

可以驱动240128的大液晶，有数字，汉字，英文字符，画线，作正弦波图的功能。-Can drive large LCD 240,128, has the number of Chinese characters, English characters, painting lines, for the sine wave function graph.

这是简易波形发生器单片机源程序，利用7289和89c51来完成实验，程序简单-This is the simple microcontroller source waveform generator, using 89c51 7289 and to complete experiment, simple

1.利用PWM控制占空比实现LED的亮暗。 2.可以用UP DOWM键进行控制亮暗。 -1. The use of PWM duty cycle control to achieve the bright LED dark. 2. Can be used to control button UP DOWM bright dark.