基于89C52单片机的无线传输系统设计

超声波模块HC-SR04,MCU ATmega16，不是通过中断实现。MCU先发一个使能信号，然后检测回波信号高电平的时间，通过串口显示。实际测试精确度很高。

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一个实时时钟（RTC）是一个计算机的时钟（最多在集成电路的形式），该跟踪当前时间。尽管该术语常常指的是在个人计算机，服务器和嵌入式系统的设备，RTC的是存在于几乎其中需要保持准确时间的任何电子设备。

motor speed by pwm this depond on that the pwm has t on and t off and t ther is a duty cycle that = ton / t this vary the average voltage across the mot-motor speed by pwm this depond on that the pwm has t on and t off and t ther is a duty cycle that = ton/t this vary the average voltage across the mot

USB鼠标的设计资料（电路图，程序，说明文章）-USB mouse design data (schematics, procedures, how-to articles)

dos下分别用汇编指令和c语言实现pci设备的访问。-dos were compiled under the directive and c language realize pci devices visit.

计数器显示 0-99 ccs 应用开放源码应用程序0-99 按钮计数器

嵌入式系统启动代码-embedded system boot code

单片机c8051F310，AD8538采集模拟量（spi） AD421输出模拟电流，（spi)12864点阵液晶显示(spi),USB（UART转），4路开关量输入输出-Single-chip c8051F310, AD8538 Analog Acquisition (spi) AD421 analog current output, (spi) 12864 dot matrix liquid crystal display (spi), USB (UART switch), 4-way switch input and output

240x128液晶T6963控制器驱动程序（C51）-很经典的!!!拿来可用-T6963 controller 240x128 LCD Driver (C51)- classic! ! ! Used available