java门禁系统源码,专业用于门禁系统开发

在8位单片机中对32位数进行开方运算的汇编子程序-In 8-bit MCU in 32-digit prescription for computing the compilation of subroutines

本程序是基于MFRC500射频卡读写器的单片机控制程序，所用单片机为AT89C52.-This procedure is based on RF card reader MFRC500 microcontroller control procedures, using microcomputer AT89C52.

用于分析各种点阵字库结构和程序，对嵌入式或单片机开发很有帮助。-Font used to analyze the various lattice structures and procedures to develop single-chip embedded or helpful.

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一位大师做的avrusb板，内有uabasp，uabcdc，USB虚拟示波器，USB逻辑分析仪，m8l核心。-A master to do avrusb board, there uabasp, uabcdc, USB Virtual Oscilloscope, USB logic analyzer, m8l core.

用一片单片机控制两个直流无刷电机运转,所以可有效的控制两个直流无刷电机的同步运转-Using a single-chip microcomputer to control two DC brushless motor functioning, and so we can effectively control two DC brushless motor synchronous operation

富士通单片机启动代码,学习富士通单片机必须看的资料.-Fujitsu single-chip boot code, learning must look Fujitsu Singlechip information.

由8051组成的单片机系统通常情况下，P0口分时复用作为地址、数据总线，P2口提供A15-A8即高8位地址，P3口用作第二功能，只有P1口通常用作I/0口。P1口是8位准双向口，它的每一位都可独立地定义为输入或输出，因此既可作为8位的并行I/O口，也可作为8位的输入输出端。当工作在输入方式时，对应位的锁存器必须先置1,才能正确地读到引脚上的信号,否则,执行读引脚指令时,若对应位的锁存器的值为0，读的结果永远为0。-By 8051, composed of single-chip microcomputer system under normal circumstances, P0 timeshare I reuse as address, data bus, P2 I provide A15-A8 high eight address, P3 mouth for the second function, I usually only P1 for I/0 I. P1 I was eight quasi-two-way port, it can be independent of each and every defined as input or output, it can be used as 8-bit parallel I/O port, can also be used as 8-bit input and output side. When the work in the input, the corresponding bit latch must first buy one in order to correctly read the signal pin, or pin the implementation of reading instruction, if the corresponding bit latch the value of 0, Reading the results of Forever to 0.

电脑音源切换控制器（带红外功能） 用AT89C251+CD4016切换控制，可控制四路以上的立体音源输入切换，一路立体声输出,有红外遥控PC功能。-Computer audio switch controller (with infrared function) with AT89C251+ CD4016 switch control, can control more than four stereo audio input switch, stereo output along the way, has infrared remote control PC functions.

用DP801Z制作多挡位时控式应急开关，用机器码写的-DP801Z produced using Shift-control when emergency switches, using binary write