51程序员电路原理图，电路板和电脑

ARM9.2的第二个程序-The second procedure ARM9.2! ! ! ! ! ! ! ! ! ! !

一个简单的实例程序，基于samsung6410的裸板测试程序，通过控制寄存器来控制led灯的亮灭

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.

嵌入式系统引导平台micro monitor的安装及源代码-embedded system platform micro monitor to guide the installation and the source code

射频收发两用机用于心电和氧气检测

AT91RM9200 SPI 键盘测试程序-AT91RM9200 SPI keyboard testing procedures

S08例程：本程序是I/O模块的例程，所用资源为单片机通用IO接口，所接器件为LED灯， 其中D2与PTA0，D3与PTA1相连接！-S08 routines: this process is I/O modules, routines, resources used for the single-chip general-purpose IO interface, the access device for the LED lights, which D2 and PTA0, D3 and PTA1 connected!

ATMEL公司的AT91RM9200的实时时钟的测试程序，armgcc编译-ATMEL AT91RM9200 the company"s real-time clock testing procedures, armgcc compiler

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

利用stm32定时器的通道捕获超声波的信号上升下降沿，计算时间，通过实际测试测得数据比较稳定，速度快！可以稍加改正移植到自己的系统中！希望对正在学习的人有所帮助。