DES是一种分组密码。假定明文m是由0和1组成的长度为64位的符号串，密钥k也是64位的0、1符号串。...

汇编实例:判断闰年程序,产生随机数并运算的程序,计算平台长度程序,加减乘除四则运算,数字方阵程序,数据加密程序,代码转换程序,键盘录入数据的转换与显示,音乐演奏等-compiled examples : judgment leap year process, and random numbers generated by operations procedures, the length of computing platform procedures, four arithmetic operations, digital matrix, data encryption, code conversion, keyboard input data conversion and display, other music

MCD1实战入门篇,点亮单个LED的程序。 该实战的目的作为学习和应用MCD1在线调试工具套件，进行项目的软件和硬件 联合调试的范例程序，也就是当做一个用户程序实例，而演示板暂时充当用户电 路的角色。这样就构成了一个软件、硬件齐全的自制项目模拟环境。 本程序实现的功能是，把端口RC的8条引脚全部设置为输出模式，并让RC0 送出高电平，从而点亮RC0口的一个LED。 该程序可用于PIC16F87X(A)所有系列-Actual entry MCD1 articles, a single LED lit procedures. The real purpose for learning and application debugging MCD1 online suite of tools to carry out the project software and hardware examples of joint commissioning procedures, that is, as a user instance, and the demo board temporarily to serve as the role of the user circuit. This constitutes a software, hardware, a full range of home-made simulation environment projects. Realize the function of this procedure is that the 8-port RC pin all set to output mode, and sent high RC0, so I lit RC0 a LED. The program can be used to PIC16F87X (A) of all series

1) 东西方向车辆放行20秒钟。即东西方向的绿灯和南北方向的红灯同时点亮20秒钟； 2) 20秒钟后，东西方向的黄灯闪烁2秒钟，以警示车辆将切换红绿灯。此时南北方向仍维持红灯点亮。在南北方向亮红灯期间，在2位数码管上显示计数值（每秒减1），从20减至01。 3) 东西方向的黄灯闪烁2秒钟后，转为南北方向放行20秒钟。即东西方向的红灯和南北方向的绿灯同时点亮20秒钟； 4) 南北方向放行20秒钟后，转为南北方向的黄灯闪烁2秒钟，以警示将切换红绿灯。此时东西方向仍维持红灯点亮。 5) 南北方向的黄灯闪烁2秒钟后，再转为东西方向车辆放行20秒钟。如此循环重复。 -1) direction vehicle release 20 seconds. What is the direction of red and green light at 20 seconds, 2) 20 seconds later, the yellow lights flashing warning vehicles with 2 seconds, switch to the traffic lights. This is still remain red light north-south direction. In the south during the red light, in the direction of the digital display tube of 2 per plan (minus 1), from 20 to 2001. 3) the yellow lights flashing direction to 2 seconds later, the south direction release 20 seconds. What is the direction of the north-south direction of red and green and light 20 seconds, 4) north-south direction after 20 seconds to release the north-south direction, yellow lights flashing warning, with 2 secon

8086下的求一个序列的波峰波谷值的程序。 可以任意输入序列，显示波峰波谷值和相对位置。-under 8,086 for a sequence of the troughs trough values procedures. Can arbitrary input sequence, showing peaks and trough values relative position.

查看dos版本号-View dos version

随机产生10道互不相同的20以内的加减法（加减数及和差均

This the source-code of a 64k-intro. Run it through tasm and tlink, and it will work (the makefile will also work). ----------------------------------------------------------------------- -This is the source-code of a 64k-intro. Run it through tasm and tlink, and it will work (the makefile will also work). ----------------------------------------------------------------------- -----------------------------------------------------------------------

AWARD BIOS源代码,支持的CHIPSET请看文件,有同型号的板子烧上去就可以跑-the compressed file contains the source code of AWARD BIOS.Supported chipsets are listed in the related file.One can complie,download and run it on the mainboard if he has such one.

一些汇编例子-Compilation of examples of some

IIR型3阶切比雪夫1型高通滤波器的采样频率（Fs)为1200Hz,截至频率为200Hz-IIR-three bands a Chebyshev high-pass filter sampling frequency (Fs) 1200Hz. As the frequency of 200 Hz