AT91RM9200的USB host和USB device的代码ADS1.2. USB

步进电机控制系统 ，DOC内有原理图，注释-stepper motor control system, DOC has diagram Notes

12864液晶屏显示年份，月份，时间，日期，星期，可以通过按键修改时间，修改后能实时显示，修改方式为中断模式修改，按键触发中断来修改。程序有STM32 min开发板的RTC时钟修改而来。希望对大家有帮助，谢谢i

本程序是串口芯片TLC16c752的典型操作代码，可以在此基础上编写自己的串口程序--The codes for typical operations on serial chip TLC16c752. You could write your own serial port applications based on it.

函数发生器是一种在科研和生产中经常用到的基本波形产生器，集成函数 波形发生器一般都采用ICL8038或5G8038，而它们只能产生300kHz以下的中低频正弦波、矩形波和三角波，且频率与占空比不能单独调节，从而给使用带来很大不便。本文介绍由LM324和稳压管组成的低频函数波形发生器，该电路能够产生正弦波、方波和三角波信号，频率能以10Hz的间隔在20Hz～20KHz范围内调整。-Function Generator is a scientific research and production often use the basic waveform generator, integrated function waveform generator usually used ICL8038 or 5G8038, and they only have a 300kHz following the low-frequency sine wave, square wave and triangular wave, and frequency and duty cycle alone is not regulated, so as to enable using bring a lot of inconvenience. This paper introduces the LM324 voltage regulator tubes, and the low-frequency waveform generator function, the circuit can produce sine, square and triangular wave signal frequencies of 10Hz to 20Hz at intervals within ~ 20KHz adjustment.

我用BASIC开发环境下的LED屏单显示实验程序，可以初步了解下B环境下SPI的简单应用-I use BASIC development environment under a single LED screen shows the experimental procedure, can be a preliminary understanding of B under the simple application of SPI

SEP3203嵌入式开发手册，用于对系统的开发-SEP3203 embedded development manual, used for system development

嵌入式系统的C语言设计.pdf 介绍C语言在嵌入式系统开发中的一些基本技术和技巧-c_programming_for_embedded_system.pdf

The PCF7991AT is a fully integrated Advanced Basestation IC, ABIC, designed for car immobilizer systems providing read and write access to an identification transponder. The device is intended for use with the NXP transponder family (PCF79xx) as well as other transponder types operating at 125 kHz and employing ASK, Amplitude Shift Keying for write and AM/PM for the read operation. The receiver characteristics (amplifier gain,filter cutoff frequencies) can be optimized to system and transponder requirements. The PCF7991AT IC is designed for easy integration into immobilizer read/write and read-only systems featuring a high degree of integration and very low external component count. The device integrates a powerful antenna driver/modulator, a low-noise adaptive sampling time demodulator, programmable filters/amplifier and digitizer, required to design high-performance basestations. A three wire microcontroller interface is provided for programming the PCF7991AT as well as for th

应用背景bit1802a bitek JPEG编解码定标器演示代码at070tn94在Keil C51。它支持捕获视频，照片为串行闪存（25xx）或SD卡使用触摸屏的方法。演示代码包含aosd2，老大，osd2和RTC功能关键技术英特尔8052 CPU使用的比特克bit1802a核心。 ；因此，它是简单和廉价的解决方案。

* 功能：DP_51PRO实验仪图形液晶显示实验。在屏幕上半部分显示一幅图片 * 在屏幕下半部分显示“重庆科技学院”等 -* Function: DP_51PRO experimental instrument experimental graphic liquid crystal display. Half of the screen shows a picture* in the second half of the screen shows