Avr Architecture description of instruction execution procedures.

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.

pid算法的源程序，这个程序很不错，是入门的很好帮助-pid algorithm source code, this procedure is pretty good, is a good entry-help

一个电子产品开发时的部分c代码C!绝对能用!-When an electronic product development part of c code C! Absolutely can!

基于89C51单片机的洗衣机控制器，含SCH电路图以及C程序-Based on the 89C51 single-chip controller of the washing machine, including schematics, as well as C procedures SCH

单片机课程设计类 单片机课程设计类-SCM SCM curriculum design, curriculum design class curriculum design class Class SCM

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

经典的DSP的C程序和汇编程序, 非常好!-Classic DSP-C procedures and compilation of procedures, very good!

8051控制CDROM驱动-8051 CDROM drive control

在keil环境下编写的，仿真用protuse。 很适合初学者 两个51单片机通讯，并且显示对方的信息-In keil prepared environment, simulation using protuse. Very suitable for beginners and two 51 Singlechip communications, and show each other

C51常用程序库，包含了常用的程序模块和功能，可以直接在设计中参考。-C51 common libraries, which includes the procedures used modules and functions can directly reference in design.