28f512 DOS

我们接口技术做的实验DA，有需要的就下载吧-we do Interface Technology Experiment DA, on the need to download it

This is an MCP2515 driver application using a PIC16F73, connected to the PC through the serial port. In the firmware you can easily configure the MCP in TX, RX or LOOPBACK mode.

用8251a实现串行口异步通信，自发自收，波特率1200bps，采用查询方式发送，中断方式接受。自收结果显示于屏幕。按esc返回dos -8251a Serial port with asynchronous communication, spontaneous self-income, the baud rate 1200bps, using queries sent, interrupt to receive treatment. Since the close results showed on the screen. Press esc to return dos

汇编语言编写DS1302充电时钟,time是多字节读写,timexie是多字节写,timedu是单字节读-Compiled languages charge DS1302 clock, time is a multi-byte read and write, timexie are multi-byte write, timedu is single-byte read

急大家所需，都是大家急的，网上汇编程序很少为大家提供一个良好的参考材料-U.S. urgently needs U.S. are urgent, on-line assembler for the U.S. rarely provide a good reference material

使用HT1632 驱动点阵式LED显示屏显示小绿人-HT1632 driver to use dot-matrix LED display shows the little green men

目前已有若干版本的子程序库公开发表，它们各有特色。本程序库中的开平方算法为快速逼 近算法，它能达到牛顿迭代法同样的精度，而速度加快二十倍左右，超过双字节定点除法的 速度。 本子程序库对《单片机应用程序设计技术》一书附录中的子程序库作了重大修订： （１）按当前流行的以 IBM PC 为主机的开发系统对汇编语言的规定，读者不必再进行修 改，便可直接使用。 （２）对浮点运算子程序库进行了进一步的测试和优化，对十进制浮点数和二进制浮点数的 相互转换子程序进行了彻底改写，提高了运算精度和可靠性。 （３）新增添了若干个浮点子程序（传送、比较、清零、判零等），使编写数据处理程序的 工作变得更简单直观。 在使用说明中开列了最主要的几项：标号、入口条件、出口信息、影响资源、堆栈需求，各 项目的意义请参阅《单片机应用程序设计技术》第六章 6.3.7 节的内容。程序清单中开列 了四个栏目：标号、指令、操作数、注释。为方便读者理解，注释尽力详细。 -err

在集成电路中，通常采用T型解码网络实现数字量往模拟的转换，再利用运算放大器完成模拟电流变为模拟电压的转换。所以，要把一个数字量变为模拟电压，实际上需要两个环节，先把数字量变为模拟电流，这是由D/A转换器完成的；再将模拟电流变成模拟电压，这是由运算放大器完成的。有时D/A转换器芯片只包含前一个环节，有些D/A转换器则包含两个环节，用前一种芯片时，需要外接运算放大器才能得到模拟电压。-In integrated circuits, the usual T-decode digital networks to analog conversion, and then complete the simulation of the use of op-amp current into the analog voltage conversion. Therefore, it is necessary to become a digital simulation of voltage, in fact, need two links, first into a digital simulation of currents, this is determined by D/A converters completed then simulate current into the analog voltage, this is determined by computing completed amplifier. Sometimes D/A converter chip contains only a part before, some D/A converter includes two aspects, before a chip, the need for external op-amp voltage can be simulated.

多模块程序设计:包含汇编命令的使用 INCLUDE: EX21.ASM,EX22.ASM,PP2.ASM 设计多字节减法运算程序,要求程序能显示运算数据和结果数据(16进制). 数据按逆序存放:先低位后高位-multi-module programming : with the use of the compilation order INCLUDE : EX21.ASM, EX22.ASM, PP2.ASM design of multi-byte subtraction Operational procedures, requirements Operational procedures can show that the data and results data (16 bases). Data stored by Reverse : first low after high

用传输矩阵法计算光子晶体的透射率,文件中将程序写在word文档中,并附带有在matlab下画的图,程序用matlab编写,感觉很有用,-use of the transfer matrix method photonic crystals transmission rate, which will write the procedures for word documents, Matlab together with the painting under the plans, procedures using Matlab prepared, I feel very useful,