8253 with the preparation of procedural delays stopwatch

8259A中断控制器实验 253A的计数器0为工作方式0，装入时间常数FFFFH，结束中断时显示信息：8253A INTERRUPT EXPERIMENT！-8259A interrupt controller experimental 253A of counter 0 0 way to work, the time constant FFFFH loaded to end disruption to display information : 8253A INTERRUPT EXPERIMENT!

using pic 16c57 to realize the caller ID phone -using pic 16c57 to realize the caller ID phoxim ne

科学与工程数值算法 c#包括插值，微分方程的数值解法等-Science and Engineering numerical algorithm c#

保护模式的资料 masm语言 -Protected Mode information MASM language

开辟3个窗口，可在两个窗口之间切换输入字符，同时在的三个窗口显示-open three windows, the window to switch between two input characters in the show window 3

1、用8255的A口驱动六个七段数码管（LED）的字段，C口驱动六位七段数码管（LED）的位控端，右侧两位显示分值，左侧两位显示秒值。 2、段数码管采用动态扫描方式，用8253做定时器（采用查询方式），每位显示的时间50Hz。 3、以5ms为基本时间单位，计数产生秒时间值，秒计数到60时对分计数，分计数到69时对时计数。 -BUFF_KEY EQU 21H BUFF_LED1 EQU 22H BUFF_LED2 EQU 23H BUFF_LED3 EQU 24H BUFF_LED4 EQU 25H BUFF_LED5 EQU 26H BUFF_LED6

Verilog黄金教程，适合初学者及进阶-Verilog Golden tutorial, suitable for beginners and advanced

实现了算术运算功能，是分别通过水平移位和循环移位来实现的，正在学习诶汇编语言的朋友可以参考一下，是我的作业-Realize the arithmetic functions, respectively, through the level of displacement and the cyclic shift to realize, and are learning assembly language ah friends can refer to, is my operating

这是一个判断某一年是否为润年的程序，运行可执行程序Ifleap.exe后，输入具体的年份， 可输出是本年是否为闰年的提示信息。-This a judgment of whether a particular year of a leap year, the running executable Ifleap.exe after importation of specific year, the output this year is a leap year if the message.

密码锁， 实现密码判断，实现密码更改，实现程序正常结束，实现非软件的准确延时，输入错误3次后自动结束程序，根据操作产生的不同结果配以不同的音效 -Password lock, password realize judgment achieve password change, the end of the normal implementation process, the accurate implementation of non-software delay, enter the wrong end of 3 times after the program automatically, under the operation of the different results produced with different audio