Usb programming to learn a good example

51单片机液晶显示，时间调节，键盘扫描，总线规则-51 MCU LCD display, time adjustment, the keyboard scanning, bus rules

C8051FXXX的软串行端口编程技术--It demonstrates how to do programming for software serial port on C8051FXXX.

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.

非接触智能卡读写程序-contactless smart card readers procedures

linux驱动程序-linux drivers

适合s3c44b0的根文件系统的镜像文件，适合arm3-S3C44B0 for the root file system image file, suitable for arm3

应用背景如果点击一个按钮，可以显示一个文本框的随机数。如果点击一个按钮，文本框的颜色可以改变，选择的颜色是随机选择。关键技术C #技术。随机选择号码和颜色。在文本框上显示数据。使用按钮来控制文本框

与EVOC板卡PCI-16P16R通讯，采用vc开发，控制继电器开闭-EVOC board with PCI-16P16R communications, using vc develop, control relays opening and closing

This is a test program for the OV5

pci驱动程序的源代码-pci driver source code