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one_wire_disp
一线显示,把电源跟数据线结合起来,减少了通讯连线.控制程序是C51的.(Line shows that the power supply combined with the data lines to reduce the communication connection. Control procedures are in C51.)
- 2009-02-12 20:28:07下载
- 积分：1
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shiyan2PCA0_8Bit_PWM_Output
C8051F410单片机PWM输出，控制电机的启动；停止(C8051F410 microcontroller PWM output, control motor start-up stop)
- 2013-05-17 09:46:05下载
- 积分：1
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key_Queue
3． 参考void Reverse(LinkQueue &Q)函数，定义新的函数int Palindrome_Test(char str[])，判断字符串str是否回文序列,若是则返回1,否则返回0。写出程序或用文字描述算法的执行步骤。(3. Reference void Reverse (LinkQueue & Q) function, define a new function int Palindrome_Test (char str []), to determine whether the string str palindromic sequence, if it returns 1, otherwise it returns 0. Written procedures or describe in words the steps of the algorithm.)
- 2013-12-15 15:04:19下载
- 积分：1
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dianji
超再生遥控-遥控步进电机正反转AB的程序(Superregeneration Remote- remote control stepper motor program AB)
- 2013-07-23 20:00:21下载
- 积分：1
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中断程序
实现正常时钟功能，带时间日期，三组闹钟，键盘显示(中断程序)(Realize normal clock function, with time and date, three sets of alarm clocks, keyboard display)
- 2019-01-26 19:56:43下载
- 积分：1
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max1247
MAX1247子程序,实现12位高精度串行AD转换(MAX1247 subroutine, 12 realize high-precision serial AD converter)
- 2007-09-04 09:31:08下载
- 积分：1
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实验1 跑马灯实验
这是基于STM32F103ZET6的原子开发板精英版的跑马灯程序(This is an elite version of the Atomic Development Board based on STM32F103ZET6.)
- 2019-06-11 14:54:23下载
- 积分：1
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shuanglushuzihecheng
摘要
电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。
基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。
关键词：数字合成信号源；程控；调幅；调频；移相；
(Abstract
Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration.
Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)
- 2021-04-08 20:19:00下载
- 积分：1
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USBDriverSetupDisk
cy7c68001驱动程序，主要用于这个usb芯片的驱动(CY7C68001 driver chips used mainly for the usb driver)
- 2020-11-25 14:29:33下载
- 积分：1
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Steam-Turbine-STFT-labview
基于虚拟仪器技术的汽轮机振动分析研究,本文针对汽轮机各个测点振动信号频率可能
随时间变化的情况，提出了一种基于虚拟仪器
(Visual Instrument)的振动信号联合时频分析方
法。(Turbine Vibration analysis based on virtual instrument technology)
- 2012-10-28 22:29:52下载
- 积分：1
