从键盘读入一个四位的十六进制数，CRT显示等值的二进制数. 由于每个十六进制数位对应4个二进制，所以每读入一个十六进制位后，即可将其对应的4个二进制位依次输出。由于数字‘０’~ ‘９’的ASCⅡ码为30H～39H,字母‘a’～‘f’与 ‘A’～‘F’的ASCⅡ码为61H～66H 与41H～46H ，因此，如果输入的字母为数字‘０’～‘９’，则其低４位即为对应的二进制位；如果输入的字符为字母‘ａ’～‘ｆ’或‘Ａ’～‘Ｆ’，则需要减７，然后通过移位将低４位依次输出。 -Reading from the keyboard into a 4 hexadecimal number, CRT display equivalent binary number. Since each hexadecimal number of the corresponding 4-bit binary, so every time into a hexadecimal places, can be its corresponding 4-bit binary sequence output. Due to the number

实现高级电子琴的程序，并实现若干扩展功能。 基本功能：用8257键盘输入对应的七个音阶，通过实验箱的喇叭发出声音，并通过七段数码管显示输入音阶； 扩展功能：1、录音：记录所弹奏曲目 2、放录音：任意时刻重放最新记录曲目 3、在程序中可预设一曲目，按一键实现播放该曲目。 4、在播放录制曲目或预设曲目时，按8279键盘上任意键可以暂停播放，再按一次从暂停处继续播放。 5、程序运行时有友好的用户介面 -Realize high-level organ of the process and realize a number of extensions. Basic functions: keyboard 8257 corresponds with the seven scale, through experimental sound speaker boxes, and through Seven-Segment LED display input scale the expansion of functions: one, sound recording: Record the playing pieces 2, released recordings: any time replay music 3-to-date records, in the proceedings may be the default one track, according to realize one key to play the tracks. 4, recording tracks in the player or the default program, press any key on the keyboard 8279 can pause playback, press once again to continue from the suspended players. 5, is running friendly user interface

电子小闹钟设计 带程序 原理图纸 电子小闹钟设计 带程序 原理图纸-Electronic design with a small alarm clock program alarm clock principle of drawing a small electronic design principle with the procedure drawings

用matlab所编用传输矩阵法计算光子晶体的能带结构的程序-prepared by using Matlab using the transfer matrix method photonic crystals with the structure of procedures

do not want to upload source code, you can

Win32汇编编程系列 本帮助文件由yyc个人整理后出版，内容全摘自网络。版权归实际作者所有。 为了让网友们能更好的学习Win32汇编编程，于是我为大家将网上的资料整理成一个帮助文件。 本帮助文件包括：Iczelion的Win32汇编教程、Iczelion 的 ODBC 教程、Iczelion 的 VxD 教程共三部分-Win32 programming compilation series from the paper to help sort out yyc personal publishing, as extracted from the entire network. All Banquangui actual author. To allow net surfers can be a better learning Win32 compilation of programming, so I will be online for all the information to help compile a document. The help files include : Iczelion Guide to the Win32 compilation, Iczelion ODBC Guide, the VxD Iczelion Guide is divided into three parts

pe 文件编程：清除文件头中的重定位表.rar-pe programming documents : the first to remove documents with the re-positioning table. Rar

本教程主要讲述计算机指令运行机制及汇编语言的相关知识，并用详实的例子来讲解如何使用O汇编语言来编写程序。汇编语言是计算机低级语言，它直接对应的是计算机机器指令，据有执行高效的特点，但由于它的底层性，指令浩繁复杂，如果你熟悉如MASM、FASM或者NASM等其它的汇编语言，那么你将能够很容易地学会使用O语言，它的内部机制与其它汇编语言是一致的；如果你没有接触过汇编语言，那么本教程将为你打开计算机语言的大门，深入细致地解剖聪明的计算机大脑的思考轨迹。如果你使用过C或者其它的计算机语言将对学习O语言有一定的帮助。-the handbook focuses on the operation of computer instructions and mechanisms related to the compilation of language knowledge, and the use of detailed examples to explain how to use the O Series language programming. Language is a compilation of computer low level language, which directly correspond to the computer machinery orders, according to the efficient implementation of the characteristics But since they are bottom, voluminous complex instructions, if you are familiar with such as Shape, FASM or Assemble the compilation and other languages, then you will be able to easily learn how to use O language, The internal mechanism and the other assembly language is unanimous; If you had any contact with assembly language. Then you ha

51单片机矩阵键盘扫描扫描之逐行扫描法.asm程序-51 single-chip scan matrix keyboard scanning method of progressive scan. Asm program

89S51 与数码管显示器以及键盘SW 对应引脚的联机为： P0.0-------------------------数码管显示器的a脚 P0.1-------------------------数码管显示器的b脚 P0.2-------------------------数码管显示器的c脚 P0.3-------------------------数码管显示器的d脚 P0.4-------------------------数码管显示器的e脚 P0.5-------------------------数码管显示器的f脚 P0.6-------------------------数码管显示器的g脚 P0.7-------------------------数码管显示器的dp脚 ； P2.2-------------------------数码管显示器1的驱动脚 P2.3-------------------------数码管显示器2的驱动脚 P2.4-------------------------数码管显示器3的驱动脚 P2.5-------------------------数码管显示器4的驱动脚 P2.6-------------------------数码管显示器5的驱动脚 P2.7-------------------------数码管显示器6的驱动脚 ； P2.2-------------------------键盘SW1 P2.3-------------------------键盘SW2 P2.4-------------------------键盘SW3 P2.5-------------------------键盘SW4 P2.6-------------------------键盘SW5 P2.7-------------------------键盘SW6-devised with the digital control display and keyboard SW corresponding pin online : P0.0------------------------- Digital Display of a foot P0 .1--------