set 80C51 serial asynchronous communication baud rate

本文介绍了两种分频系数为整数或半整数的可控分频器的设计方法。其中之一可以实现50％的奇数分频。利用VHDL语言编程，并用QUARTERS||4.0进行仿真，用 FPGA 芯片实现。 关键词：半整数，可控分频器，VHDL, FPGA -This article describes two kinds of sub-frequency coefficient is an integer or half-integer divider controllable design method. One of them can achieve 50 of the odd-numbered sub-frequency. The use of VHDL language programming, and QUARTERS | | 4.0 simulation, using FPGA chip. Key words: semi-integer, controllable divider, VHDL, FPGA

常用元件汇总，包括：1N系列二极管、74系列、4000与4500、变容二极管参数、常用二极管、常用芯片、场效应管性能、光电器件、横流二极管、快恢复二极管、三极管等-Summary of commonly used components, including: 1N series of diodes, 74 series, 4000 and 4500, Varactor parameters, commonly used diodes, commonly used chip FET performance, optoelectronic devices, cross-flow diodes, fast recovery diodes, transistors, etc.

这是AVR系列单片机1,教材及应用,解压密码是www.pp51.com-AVR

基于VC++6.0应用MSCOMM控件的串口通信上位机程序,实现与51单片机的通信-Based on VC++ 6.0 Application MSCOMM control PC serial communication procedures, with 51 single-chip communication

是一些单片机的串口通信程序，用C语言编写。-Is the number of single-chip serial communication program, using C language.

主要功能：利用AT89C/S51作为控制器，JM12864M型号的lcd作为人机界面，18B20温度传感器和DS12887时钟芯片为辅助IC的可调万年历系统。此万年历可以形象的表现出系统当前的状况，并能随意设置闹铃和时间，具有保存和不保存的当前设置的功能。-Main functions: the use of AT89C/S51 as a controller, JM12864M models of lcd as a man-machine interface, 18B20 temperature sensors and DS12887 Clock IC chip for auxiliary adjustable calendar system. This calendar can show the image of the system

用C51I/O口来驱动两个四位数码管，并且可消隐，降低功耗。-With the C51I/O port to drive the two four digits

超声波测距原代码,可以以此为原本用来做测速,避障,等的智能小车-measure distance

at24c01和02是串行存储器的经典，学会并应用它对与工业或者学习都有极大的帮助。因此我在此上传它的原理图及其程序。-at24c01 and 02 is a classic serial memory, learn and apply it to industrial or study has a great help. Therefore, I would upload its schematic diagram and its procedures.

c51无参数调用asm-decoder called with no arguments asm