lingxubaohu

线路通断检测器的设计： 1．用压电陶瓷蜂鸣片作为电声元件。 2．用两根导线作为测试探针 3．线路通断是通过测试电阻的大小来判断，有以下三种情况： （1）若150Ω<Rx<900Ω，则蜂鸣片不发出声响。 （2）若Rx>900Ω或者Rx<150Ω，则蜂鸣片发出间歇式的滴－滴声响。 以上各临界阻值（150Ω和900Ω），允许误差±10％ 4．＋15V直流稳压电源需要设计。 (Line-off detector design: 1. Piezoelectric ceramic buzzer as the electro-acoustic components. 2. As a test probe with two wires 3. Lines off by testing the resistance to determine the size, the following three conditions: (1) If 150Ω <Rx <900Ω, the buzzer is not audible. (2) If Rx> 900Ω or Rx <150Ω, then the buzzer sent intermittent drip- drip sound. Above the critical resistance (150Ω and 900Ω), tolerance ± 10 4.+15 V DC power supply need to design. )

PIC （PIC16F886） 做的简单频率计 用TMR0定时1s，将待测信号从T1CKI脚输入，用TMR1进行计数，读出TMR1H，TMR1L的值就是频率 单片机：PIC16F886 显示：LCD1602 编程语言：PIC C 附Proteus仿真。(PIC (PIC16F886) to do a simple frequency counter TMR0 timer with 1s, the test signal input pin from T1CKI with TMR1 count, read TMR1H, TMR1L value is the frequency of the microcontroller: PIC16F886 display: LCD1602 with Proteus simulation.)

蜂鸣器模仿报警声，基于51单片机的蜂鸣器模仿报警声(The buzzer to imitate the alarm sound, 51 SCM buzzer alarm based on imitation)

单片机调试实现信号发生器功能的C源代码，包括三角函数、方波等等(Single-chip debugging functions for signal generator of C source code, including trigonometric, square, etc.)

在MSP4305529上设计开发的，基于ADS1292的51阶，151阶的低通滤波算法，可以准确滤出50HZ干扰。(Design and development on MSP4305529 based on ADS1292, 51 order, 151 order low-pass filtering algorithm, can filter out 50HZ interference.)

说明：  基于STM32F407的LED音乐频谱，AD+DMA采集音乐信号，利用FFT运算得出音乐频谱，通过10*8的LED点阵显示的音乐频谱单片机代码(Based on the LED music spectrum of STM32F407, AD+DMA collects the music signal, obtains the music spectrum by FFT operation, and displays the music spectrum code by 10*8 LED dot matrix.)

RX8025T 时钟芯片，高精度，精度每天0.5秒 时间通过串口发送(RX8025T clock chip, high precision, accuracy of 0.5 seconds every time sent through the serial port)

义隆单片机EM78P153SN 程序 100US延时 汇编语言(Elan microcontroller EM78P153SN program 100US assembly language delay)

MSP430单片机C语言应用程序设计实例精讲(MSP430 microcontroller C language application design example succinctly)

ISIS实现仿真MSP430单片机开发，有MSP430SRVPAK++7.5补丁和测试程序仿真图(ISIS achieve simulation MSP430 development, and testing procedures have MSP430SRVPAK++7.5 patch simulation diagram)