自己写的C51仿真器代码

DDS芯片9851的驱动程序~用来产生不同频率的正弦波波形~-DDS chip driver 9851 ~ used to generate different frequencies of sinusoidal waveform ~

此程序时周立功ZLG7290源码驱动，这是我开发版上的源码-This program Ligong weeks ZLG7290 source driver, this is my development version of the source

实时时钟RTC4553的测试程序，编译环境为伟福6000，汇编程序-real-time clock RTC4553 testing procedures, compile environment for the 6,000-fu, assembler

用单片机C语言编的通过键盘扫描得到键值的键盘扫描C程序的源代码，可供单片机开发人员参考。-MCU series of the C language keyboard scan keys keyboard scan C program"s source code available to developers SCM reference.

TLC549是一种采用8位逐次逼近式工作的A/D转换器。内部包含系统时钟、采样和保持、8位A/D转换器、数据寄存器以及控制逻辑电路。TLC549每25uS重复一次“输入―转换―输出”。器件有两个控制输入：I/O CLOCK和片选（CS）。 内部系统时钟和I/O CLOCK可独立使用。应用电路的设计只需利用I/O时钟启动转换或读出转换结果。当CS为高电平时，DATA OUT处于高阻态且I/O时钟被禁止。 -TLC549 is a used 8-bit successive approximation type of work the A/D converter. Contains the internal system clock, sample and maintain, an 8-bit A/D converter, data register and control logic circuit. TLC549 each repeat 25uS

本程序是在c51低下的菜单程序。 如果要mcu 低下编写菜单的朋友可以拿来参考.-the procedures in the lower menu decoder procedures. If the lower mcu prepared menu can be used to reference a friend.

c51单片机实验程序代码--流水灯、时钟、液晶驱动，串口异步通信、AD、DA、ROM 扩展、IO扩展等等，附原理图，对初学者很有帮助。-C51 single-chip experimental procedure code- water lights, clock, LCD driver, serial asynchronous communication, AD, DA, ROM expansion, IO expansion and so on, with schematic diagram, useful for beginners.

msp430f449的文件， 很有用的-MSP430F449 document very useful

利用动态扫描和定时器1在数码管上显示 出从765432开始以1/10秒的速度往下递减 直至765398并保持显示此数，与此同时利 用定时器0以500MS速度进行流水灯从上至 下移动，当数码管上数减到停止时，实验 板上流水灯也停止然后全部开始闪烁，3秒 后（用T0定时）流水灯全部关闭、数码管上 显示出"HELLO"。到此保持住。 设晶振频率为12MHz。-The use of dynamic scanning and Timer 1 in the digital control to show from the beginning of 765,432 to 1/10 seconds until the speed of descending down 765,398 and maintain display this number, at the same time the use of Timer 0 to 500ms the speed of light from the flowing water to Under the move, when reduced to a few digital tube stop, the experiment on-board water stop and then all the lights started to flicker, 3 seconds later (T0 regularly used) closed water lights, digital tubes show

8MHz，FLL+自动校准。