快速付里叶变换子程序所需 RAM 空间以输入的首地址为基址,向增加的方向扩展...

硬盘作MP3,用IDE接口的旧硬盘,加入51系列的单片机和显示屏,可以作一个有个性的MP3,-Hard drive for MP3, using the old IDE interface hard drives, adding 51 series of single-chip computer and display, can be used as a personality MP3,

在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张， 于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却 发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高， 但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支! 那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?

89c51的t6963驱动程序 图形写入方式，直接数据水平及垂直方向坐标，并将字库代码地址写入dptr便可使用。 作者：周长盛-89c51 the driver graphics writing, direct data horizontal and vertical coordinates of the direction and character code addresses will be used to write dptr. Author : Zhou Changsheng

IAR编译的mega16的ad转换，由1602和串口分别显示-IAR compiler mega16 of the ad conversion, and serial from 1602 show

该源代码是用于串口通讯的，本着资源共享的精神，发-The source code is used for serial communications, in line with the spirit of sharing resources, the

系统以AT89S52单片机为控制核心，加以直流电机、舵机、光电传感器、火焰传感器和电源电路以及其他电路构成，设计报告完整，元器件选择比较恰当，制作的小车能完成题-AT89S52 Single-chip system for the control of the core, to DC motor, gear, photoelectric sensors, flame sensors and power supply circuit and other circuits, the design integrity of the report, more appropriate choice of components to produce the car to complete the title

usb编程器的全部资料，包括上位机程序及下位机源程序 支持编程器类型 1,多种并口（可以自定义）编程器（并口串行） 2,USBPROG编程器（usb串行） 3,并口并行编程器 4,usbasp 扩展功能 1,串口调试,超级终端 特色： 1,速度较快(16k程序): 并口 读11秒 写11秒；USBPROG读2秒 写2秒。 2,USBPROG根据目标cpu自动调整三种下载速度(8k,187.5k,375k) 3,支持自定义ATMEL全系列cpu(avr+S5x 系列). 4,支持自定义熔丝信息提示功能 -usb programmer all the information, including procedures and PC-under-source programming support for a similar, multiple parallel port (which can be customized) programming (Serial Parallel Port) 2, USBPROG Programming (usb serial) 3, Parallel parallel programming for four, a usbasp expansion, Serial debugging, the Super Terminal characteristics : a high speed (16k procedures) : Parallel Port Reading 11 seconds was 11 seconds; USBPROG Reading 2 seconds was two seconds. 2, according to the target cpu USBPROG automatic adjustment of the three download speeds (8k, 187.5k. 375K) 3, ATMEL support from the definition of a full range of cpu (avr S5x series). 4. Fuse support from the definition of functional i

P89V51RD2远程升级解决方案，iap源代码及其文档详细解析，源码通过验证可用-Remote upgrade P89V51RD2 solutions, iap detailed source code analysis and its documentation, source code available through the verification

一本关于皮层PIC C语言编程的参考书，内容丰富，是入门的好帮手-1 on the cortical PIC C programming language reference books, rich in content, is a good helper entry

绝对好用的I2C和USBSWITCHTO232 绝对好用的I2C和USBSWITCHTO232-absolutely handy USBSWITCHTO232 I2C and the absolute ease of use of I2C and USBS WITCHTO232 absolutely handy I2C and USBSWITCHTO232