对于一个单片机初者来说一定想自己设计一个小系统吧・・这里提供了以89S52为核的小系统图和源程序！希望对刚学者有所帮助...

12864液晶在出厂时其对比度已经调好，所以用户在使用的时候第三管脚可不用接任何东西，本实验板上为了兼容多家12864液晶所以加了液晶对比度调节电位器，若用户使用我们配套的12864液晶可不用管它，液晶的第三管脚悬空就可以。有些液晶功耗比较大，用户在使用的时候可将液晶的第19、20引脚的背光不接，这样字体会很清楚-12864 LCD contrast, when the factory has a good tune, so when users can not access the third pin anything, this experiment in order to compatible with more than 12,864 on-board LCD so the addition of LCD contrast adjustment potentiometer, if users supporting our 12864 can not regardless of LCD, LCD" s third pin can be left vacant. Some relatively large power consumption of LCD, users can be used when the first 19,20 LCD backlight will not receive the pin, so that fonts will be very clear

用ds18b20+ds1302+89s52做的时钟-With ds18b20+ Ds1302+ 89s52 make clock

keil C51 LCD 驱动源码,其中还有I2C驱动,ADC驱动,键盘操作等,是一个完整的keil源代码,供大家参考-Keil C51 LCD driver source code, which also drives I2C, ADC drive, keyboard operation, is a complete source code Keil, for your reference

AVR单片机新版USB下载器的制作全部资料，包括源代码，及原理图（SCH）等。-AVR microcontroller to download a new version of USB devices making all information, including source code, and schematic diagram (SCH) and so on.

方波产生程序 megal128 iccavr开发平台 -Square wave generation process development platform megal128 iccavr

很好的c语言24c01代码，经试验可以使用，分享一下-24c01 good c language code, as the pilot can use, share

软件实现日历，采用LCD1602显示,1602的第一行滚动显示设计说明，第二行显示日历-LCD1602 LCD1602 LCD1602 LCD1602

一种比较好用得PWM控制芯片，希望对您有所帮助。-Was a relatively easy to use PWM control chip, want to help you.

电容表89c52，比较精确，可以自己制作，内带pcb图-Capacitance Table 89c52, more precise, you can produce their own, which with pcb diagram