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51单片机系统中运用电脑上的大键盘
- 51单片机系统中运用电脑上的大键盘！ Keyboard接线 PS/2--------51 1 DATA------P3.4 3 GND 4 VCC 5 CLK-------P3.3 接在51的外部中断，触发方式为低电平 AT89x51使用12M Modified by Shen Peng! Postgraduate of 2003, 7 Department Harbin Engineering University-51 microcomputer system on the use of t
HART协议简介
- HART协议由Rosemount公司开发且已向每个使用者开放HART协议采用标准的Bell 202频移键控信号以1200波特通信以低电平加载于4mA~20mA模拟信号上，由于载波信号的平均值为零所以它对模拟信号没有影响。-HART agreement develops by Rosemount Corporation also opened the HART agreement to each user to use the standard the Bell 202 frequency-s
C字符串函数底层实现
- C字符串底层函数的实现。对一些想了解C的低层函数的人很有帮助，自己去看吧-bottom C string functions to achieve. Some wanted to know the low-level C function were very helpful to see it themselves
zhinenghongwai
- 这个产品是通过遥控器控制定时时间来决定P1.0口输出高电平和低电平的时间，在P1.0口接一个继电器后，从而控制电磁阀开和关，以达到对石油含水量的定时智能排放。现已应用在上海金山炼油厂，反映良好。 -this product is remote control through regular time to P1.0 I decided to allow high output and low-level output time , I received a P1.0 relays, cont
xvvc
- 程序介绍：利用P1 口通过一定延时轮流产生低电平 输出，以达到发光二极管轮流亮的效果。实际应用中例如： 广告灯箱彩灯、霓虹灯闪烁。 -procedures introduced : P1 mouth through a certain delay alternate low-level output, to achieve LED-rotation effect. Practical applications such as : advertising light
chexu
- PWM 码是一种脉宽调制码，它的组成为9MS 高电 平和4MS 低电平引导脉冲，16 位系统识别码 正码和8 位数据反码。我们要解的就数据码。一个PWM 码的0是由一个0.58ms的低电平和一个0.58ms的高电平 -code is a PWM pulse width modulation code, which is composed of 9MS to I and decent low-level guide pulse, sixteen sy
Software_code_principle_and_procedure_of_infrared_
- 红外遥控器软件译码原理和程序1 红外一开始发送一段13.5ms的引导码，引导码由9ms的高电平和4.5ms的低电平组成，跟着引导码是系统码，系统反码，按键码，按键反码，如果按着键不放，则遥控器则发送一段重复码，重复码由9ms的高电平，2.25ms的低电平，跟着是一个短脉波. -infrared remote control software decoding procedures for a principle and begin sending an infrared section
avr314
- 指南描述了一组用于SPI协议软件实现的低级程序，在主模式中所有的通信都来自AVR-guide describes a group SPI protocol software for the realization of the low-level procedures, the main mode of communication are all from the AVR
pwm2ok
- 以比较匹配A达到时交替输出高低电平及写入其维持 时间常数之方法实现脉宽调制输出-to compare A match reached the turn at the high output and low-level maintenance time into their methods to achieve constant PWM Output
icctiny_611a
- AVR的开发环境软件，是一种低级的开发软件。目前有很多升级版-AVR software development environment is a low-level software development. There are many upgrades
hongwai-decode
- 红外遥控器软件解码原理和程序(C51) 红外一开始发送一段13。5ms的引导码，引导码由9ms的高电平和4。5ms的低电平组成，跟着引导码是系统码，系统反码，按键码，按键反码，如果按着键不放，则遥控器则发送一段重复码，重复码由9ms的高电平，2。25ms的低电平，跟着是一个短脉冲，本程序是免费给大家，版权所有，不得用于商业目的本程序经过试用，能解大部分遥控器的编码！ */-infrared remote control software decoder principles a
luojifenxiyi
- 逻辑分析仪 PC发送到单片机的命令共7个字节： 第一字节是触发信号，每bit对应一路信号，1为高电平触发，0为低电平触发； 第二字节是触发有效信号，每bit对应一路信号，1为忽略，0为有效； 第三、四字节是采样时间，对应如下： 2us=0x0402，5us=0x0a02，10us=0x1402，10us=0x2802，50us=0x6402，100us=0xc802，200us=0x3203，500us=0x7d03，1ms=0xfa03，2ms=0x7d04，4ms
51XILIE
- 编译后在单片机的1脚输出低电平，延时后输出高电平， 接一个电阻，一个LED，接到电源5V上，这样LED就会亮一下， 然后灭，然后亮，-compiled in a foot MCU low-level output, the output delay margin, then a resistance, an LED, received a 5 V power supply, this will be bright LED and then extinguished, and then s
GPio-control
- wince下控制GPIO,用于高低电平控制 wince42.net xscale pxa225平台-wince under control GPIO, for high-low-level control platform wince42.net xscale pxa225
4.3_int_test
- Embest Arm EduKit II Evaluation Board External Interrupt Test Example Please Select the trigger: 1 - Falling trigger 2 - Rising trigger 3 - Both Edge trigger 4 - Low level trigger 5 - High level trigger any key to exit...
zuixiangxiARMbootjiangjie
- 在ARM底层编程时，boot起着很重要的作用，本片就很详细的讲解了ARM的BOOT，很值得阅读。相信会很有帮助。-Low-level programming in the ARM, boot play an important role in this film very detailed explanation of the ARM-BOOT, is worth reading. Believe would be helpful.
ARMCommands
- 做ARM低层开发的人员，不可多得的资源，推荐-ARM low-level development personnel to do, rare resources, it is recommended
LPC1766
- 32-bit ARM Cortex-M3 microcontroller up to 512 kB flash and 64 kB SRAM with Ethernet, USB 2.0 Host/Device/OTG, CAN-The LPC1768/66/65/64 are ARM Cortex-M3 based microcontrollers for embedded applications featuring a high level of integration and l
Using-low-level-ethernet-routines
- Using low-level ethernet routines, etherInputHookAdd and etherOutput
lenovo-power
- Lenovo laptop low-level power control