想知道怎么对文件加密？想看代码找不到？这里有啊

关于数字钟的实现，用VHDL实现时，分，秒，的显示，并能报时-Digital clock on the realization of VHDL to achieve with hour, minute, seconds display, and time

DS1302源程序 DS1302源程序-DS1302 source DS1302 source

《汇编源代码大全》-"compilation of source code Encyclopaedia"

JAVA课本原代码 有关图象编辑等其他编程内容-textbooks Java code on the original image editing and other programming content

基于51单片机的带时间显示和紧急控制的交通灯的设计。 此程序在硬件上调试通，用定时器1延时，外部中断0接紧急控制，R0为100MS延时常数，R2为状态延时常数，8279控制数码管显示时间,用P1口控制双色灯-With 51 single-chip based on the time display and the emergency control of traffic lights design. On this process in hardware debugging pass, with one delay timer, external interrupt 0 then the emergency control, R0 for 100MS constant delay, R2 for a state of constant delay, digital 8279 control display time control using two-color lights I P1

这个程序真的很有用,它可以告诉你怎样来运用单片机,不仅仅是写一个程序而已,相信你看了之后一定收获不小!-this procedure is really useful, it can tell you how to use the microcontroller, is not just a procedure adopted, I believe you will certainly learned a lot after reading!

题目实现DOS中的COPY命令。可首先打开源文件和目的文件，其次顺序读取源文件每个字节赋给目的文件对应位置，源文件读完时，目的文件也自然拷贝成功。-Title achieve the DOS in the COPY command. Be the first to open the source file and destination file, followed by sequential reads the source file is assigned to the purpose of the file corresponds to each byte location, the source file read, the purpose of copying documents the success of the natural.

串口键盘的程序 -serial keyboard procedures

此程序为KEIL环境下开发的代码（开发环境备选里没有KEIL），功能在成功运行后可以播放“生日快乐”歌。所需要的开发硬件为AT89C51为主芯片的单片机。-This program is developed under the code in KEIL environment (development environment, where there is no alternative KEIL), features a successful running play " Happy Birthday" song. Required the development of hardware-based chip microcontroller AT89C51.

该程序为VB程序,是用于计算出来的坐标需要进行坐标系转换使用.感谢站长-procedure for the VB program is used to calculate the coordinates of the need for the use of coordinate system conversion. Grateful to the station! !