MX27 启动引导程序BOOTLOADER源码.

低频数字式相位测量仪； 此系统由相位测量仪、数字式移相信号发生器和移相网络三部分组成。为使系统更加稳定，使系统整体精度得以保障，本电路两块T89C52为核心控制器件分别控制相位测量、数字式移相信号发生,在数字式移相信号发生部分采用了锁相技术、CPLD等技术, 使输出波形精度大大提高，并可对频率自动校验，提高频率稳定性。-low-frequency digital phase-measuring instrument; This system consists of phase-measuring instrument, digital phase shifting generator and phase three network components. To make the system more stable, the overall accuracy of the system can be protected, the two T89C52 circuit control devices at the core respectively phase measurement control, digital believe the shift occurred, the digital shift occurred some believe that the use of lock-in technologies, such as CPLD technology, the output waveform accuracy greatly improved, and can automatic calibration frequency, frequency stability.

步进电机的单片机控制系统的设计用C语言编写的程序,可以直接使用-Stepper motor microcontroller control system design using C language program can be used directly

这是非常重要的理解通信控制信号时的稳定性不同的时钟系统，由于移动信号的新时钟域似乎是异步。如果信号不同步的新的时钟的第一存储元件时钟域可到亚稳态和最坏的情况是，解决时间不能预测。它可以遍历整个造成故障的功能，新的时钟域。为了防止这样的故障，建立时间和保持时间规范设计中应遵循。

通过PIC16F877主控芯片操作ISD1760语音芯片，可以通过手动录音以后实现录音地址的提取。地址计算方法包含在注释中，音质好，可以满足大部分的需求。-PIC16F877 chip operations through the Master ISD1760 voice chip, can be achieved by manually recording after the recording address of the extract. Address calculation method is included in the notes, the sound quality is good, to meet the needs of the majority.

PIC单片机控制12位高速串行DA（max538）产生阶梯波-PIC SCM 12 high-speed serial DA (max538) ladder generated wave

calculator on UART of 8051 with videos.

RT-STN-A字库图库串行控制板使用说明.doc-RT-STN-A font library serial control panel instructions. Doc

51系列单片机18b20温度传感器的C语言程序。-51 Series single-chip temperature sensor 18b20 the C language program.

51CPU快速crc检验-51CPU rapid test unicef.org

针对ATMEL公司的9260（ARM926）的data flash测试程序-For ATMEL" s 9260 (ARM926) of the data flash test procedures