汇编语言，用定时器中断，实现输出占空1比1的方波波形

89c51的一个小程序，网上下载的，我看了还不错，对我帮助比较大，在实际中能用上，-89c51 a small procedure, the online download, I read quite well, compared to me, can be used in practice.

ch375的USB驱动打印程序 很有用-ch375 printing process of the USB drive is useful

在keil下 的51 简单的os 51_00_OS-Under 51 in keil simple os 51_00_OS

DSP 算法C语言版 很有参考价值 尤其是在单片机上实现-DSP algorithm for C language version of the valuable especially in the single-chip to achieve

MSP430F1612应用程序，LED控制。-MSP430F1612 application program。

串口多机通讯Ｃ５１程序，经过实际验证- The string mouth machine communications C 51 procedures, pass through actually confirm

ZLG7290B 是广州周立功单片机发展有限公司自行设计的数码管显示驱动及键盘扫描 管理芯片。能够直接驱动8 位共阴式数码管（或64 只独立的LED），同时还可以扫描管理 多达64 只按键。其中有8 只按键还可以作为功能键使用，就像电脑键盘上的Ctrl、Shift、 Alt 键一样。另外ZLG7290B 内部还设置有连击计数器，能够使某键按下后不松手而连续有 效。采用I2C 总线方式，与微控制器的接口仅需两根信号线。该芯片为工业级芯片，抗干扰 能力强，在工业测控中已有大量应用。-Canton weeks ZLG7290B is Ligong Singlechip Development Co., Ltd. to design the digital tube display driver and the keyboard scan management chip. Can directly drive a total of 8 vaginal digital tube (or 64 independent LED), at the same time management can also scan up to 64 keys. Which has 8 buttons can also be used as function keys, like the computer keyboard on the Ctrl, Shift, Alt keys like. Another internal ZLG7290B batter has also set up counters, can press a button and a row after不松手effective. Using I2C bus mode microcontroller interface with only two signal lines. The chip-on-chip for industry, anti-interference ability, in the industrial measurement and control has been a large number of applications.

超声传感器原理图及资料 -Ultrasonic sensor schematics and information

这个是SOC的芯片，是杭州万工的产品。可用于单相简单的电子式电度表的开发。资源比较丰富，可供参考-This is the SOC chip is the industry" s products, Hangzhou 10000. Can be used for a simple single-phase electronic power meter development. Resources are relatively abundant, available for reference

单片机是52的，P0口连到四个数码管的七个管脚，其中两个冒号点为最后两个数码管的DOP点，P1.0至P1.3为四个数码管的选通端，低电平有效。程序2较完整，可实现设定时间功能。-Singlechip is 52, P0 port connected to four of the seven-pin digital tube, two of which point to the last two colon tube DOP-point digital, P1.0 to P1.3 for the election of four digital tube pass-side, active-low. 2 a more complete procedure, set the time function can be realized.