用51单片机实现音乐播放的源代码，能够播放“祝你平安”和“八月桂花香”...

利用汇编语言实现绘图功能，包括圆、正方形、三角形、直线。还可以用颜色、运动、汇编语言实现绘图功能，包括圆、正方形、三角形、直线。还可以用颜色、运动、汇编语言实现绘图功能，包括圆、正方形、三角形、直线。还有颜色，动作，

一个电子密码锁源程序 来源：网上搜集 尚未实验验证-an electronic password lock source Source : Internet yet to collect experimental verification

code 2864 for reference

12232的应用程序，大家看看吧-12,232 applications, we look at it

在屏幕上开出三个窗口：起止坐标为（5，10）和（15，30），（5，50）和（15，70），（18，15）和（22，65）。要求可用左右方向键选择左窗口或右窗口为当前活动窗口。当一行字符显示满后（左右窗口一行显示20个字符，下窗口显示50个字符），窗口自动向上卷动一行，输入的字符仍显示与最低一行，窗口最高一行向上卷动后消失。用上下方向键可使活动窗口及下窗口内容同时上卷或下卷。输入‘ESC’后结束程序。(huangyujie)-screen out three windows : starting and ending coordinates (5,10) and (15, 30), (5,50) and (15.70) (18.15) and (22.65). Asked about the direction keys can be used to choose the left or right window to window to window current activities. When his characters show after the expiration of (his show window about 20 characters, the next window displays 50 characters), the window automatically scrolling upward here, the importation of characters showed that the minimum here, his highest window scrolling upward disappeared. Up and down direction keys enable activities under the window and window content, but on the next volume or volumes. Importation "ESC" end after the procedure. (Huangyujie)

汇编检测 mac，用汇编写的检测系统mac代码-compilation detection mac, with the compilation of writing code detection system mac

汉诺塔设计，希望对大家有用，请大家多多指教。-Hanoi Tower design, we hope to useful, please exhibitions.

51单片机的软件延时，在12MHZ下的多种延时程序-51 SCM software delay, at 12MHZ procedures under a variety of delay

在集成电路中，通常采用T型解码网络实现数字量往模拟的转换，再利用运算放大器完成模拟电流变为模拟电压的转换。所以，要把一个数字量变为模拟电压，实际上需要两个环节，先把数字量变为模拟电流，这是由D/A转换器完成的；再将模拟电流变成模拟电压，这是由运算放大器完成的。有时D/A转换器芯片只包含前一个环节，有些D/A转换器则包含两个环节，用前一种芯片时，需要外接运算放大器才能得到模拟电压。-In integrated circuits, the usual T-decode digital networks to analog conversion, and then complete the simulation of the use of op-amp current into the analog voltage conversion. Therefore, it is necessary to become a digital simulation of voltage, in fact, need two links, first into a digital simulation of currents, this is determined by D/A converters completed then simulate current into the analog voltage, this is determined by computing completed amplifier. Sometimes D/A converter chip contains only a part before, some D/A converter includes two aspects, before a chip, the need for external op-amp voltage can be simulated.

教如何使用asm编程，有很多很好的例子。