FFT_top_5

基于示波法的电子血压计程序，包括脉搏测量。控制器采用STM32F103C8T6。包含数据核心算法程序。( Based oscillography electronic sphygmomanometer procedures, including pulse measurements. Controller uses STM32F103C8T6. It contains data core algorithm program.)

本源码为运行在8051+RTL8019构成的单片机系统上实现的Web服务器，程序由C51语言编写，可以方便的移植到任何51内核的处理器上，对于其他8位微处理器上的网络应用也有一定的参考意义。本文配套的文档参考本人上传的“WebServerOn8051.rar”。(source for the operation in 8051 RTL8019 constitute the SCM system to achieve the Web server , procedures prepared by the C51, to facilitate the transplantation of any of the 51 core processor, for the other eight microprocessors on the network application has some reference value. This paper supporting documentation reference I uploaded "WebServerOn8051.rar.")

步进电机28BYJ48型四相八拍电机，电压为DC5V—DC12V。当对步进电机施加一系列连续不断的控制脉冲时，它可以连续不断地转动。每一个脉冲信号对应步进电机的某一相或两相绕组的通电状态改变一次，也就对应转子转过一定的角度（一个步距角）。当通电状态的改变完成一个循环时，转子转过一个齿距。四相步进电机可以在不同的通电方式下运行，常见的通电方式有单（单相绕组通电）四拍（A-B-C-D-A。。。），双（双相绕组通电）四拍（AB-BC-CD-DA-AB-。。。），八拍（A-AB-B-BC-C-CD-D-DA-A。。。）(Stepping Motor 28BYJ48 four-phase eight-phase motor, the voltage DC5V-DC12V. When a series of continuous control pulses are applied to the stepper motor, it can be continuously rotated. Each pulse signal corresponds to the stepper motor of a phase or two-phase winding power state change once, also corresponds to the rotor through a certain angle (a step angle). When the change in the power-on state completes one cycle, the rotor turns one pitch. Four-phase stepper motors can be operated in different power-up modes. The common power-up modes are: single-phase winding power (ABCDA ...), double (dual-phase winding)-DA-AB-...), eight beats (A-AB-B-BC-C-CD-)

51单片机控制ds12c887芯片的程序,最简单的实现,实现基本的功能,可以显示时分秒,初学者可以参考一下.(51 single-chip process to achieve the water lights, the most simple and light to achieve the water, the realization of the basic functions of reference for beginners.)

射频卡协议ISO14443中文版 非接触式(RF card agreement ISO14443 Chinese .doc)

利用STC单片机实现软件模拟全双工串口的程序，只用一个定时器，消耗系统资源很少。(using SCM software simulation of the full-duplex serial procedures, only a timer, depletion of scarce resources system.)

循环点亮P1口，但是所有的灯没有全灭，开发环境为HEIL(Circular light P1 mouth)

一个数字梯形，选择k条路线，每条路线从第一层的某个数开始，每次进入下一层到达左下或者右下的数字，直到最后一层为止。每条路线不能经过相同的路径，但是可以经过相同的数字节点。 输出一个整数，表示能得到的最大的k条路径经过的数字之和(A digital ladder, the K route, each route the first layer of a number, each time to enter the next layer to reach the left or right next to the number, until the final layer. Each route can not pass through the same path, but can pass through the same number of nodes. Output an integer representing the sum of the number of the largest K paths that can be obtained)

AD转换，实现简单的模拟电压转换数字电压(AD conversion, to achieve a simple analog voltage conversion digital voltage.)

51单片机的eeprom和iic通信软件模拟程序(Eeprom and IIc communications in 51 single chip machines)