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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。-DES is a block cipher. M is expressly assumed by 0 and a length of 64 strings of symbols, as well as key k 0 64, a string of symbols.

我们最近做的实验-our recent experiments

简单51程序，主要针对初学者的51程序，跑马灯的-51 simple procedures, mainly for beginners of 51 procedures, the Marquee

实例为新手提供msp430开发注意事项，熟悉IAR编辑环境.-Provide examples for new MSP430 development of attention editor familiar with the IAR environment.

说明：  对于矩形排样的解决，求解许多不一样的小矩形，如何放置在一个大矩形里面(For the solution of rectangular layout, how to place many different small rectangles in a large rectangle)

模拟银行卡取款操作，银行卡号为8位，能够进行查询、取款、存款、修改密码等操作。查询时需要输入密码，密码为6位。当密码位数和相应位都符合时，显示卡内余额，否则密码三次错误，结束操作。取款时也需要输入密码，密码为6位。当密码位数和相应位都符合时，显示现有余额，输入取款金额，操作结束显示所剩金额，否则密码三次错误，结束操作。限制每天总共可取的金额 ，若违规给出相应的警告。取款操作时输入取款金额 ，操作结束，显示卡内余额，输入密码时，不显示真实值，修改密码时显示真实值。-simulated bank teller card operation, a registered member of the eight to conduct inquiries, withdrawals, deposits, change passwords operation. Inquiries need to enter a password, the password to six. When the median and the corresponding password-meet, showed the card balance, otherwise the wrong password three times, the end of operation. Teller also need to enter the password, the password to six. When the median and password are consistent with the corresponding position, shows that the existing balance of the amount imported withdrawals, the remaining operation ended shows the amount, otherwise the wrong password three times, the end of operation. Limit daily total amount of desirable, if irregularities are given corresponding warning. ATM withdrawals

Atmel提供的GAL编译工具,对GAL芯片进行编写,以及可转换成机器码-the GAL compiler tool to prepare for GAL chip, and can be converted into machine code

该程序采用汇编语言编写，用keil c51环境进行编译，能够实现21个8字的LED显示，同时也将输出语音。(The program prepared by the use of assembly language, using keil c51 compiler environment, to achieve 21 8 character LED display, but also the output voice.)

关于56F8346DSP芯片如果操作内部FLASH写入-56F8346DSP chip on if the operator into the internal FLASH