51单片机三首歌播放原代码

简易数字电压表的设计,利用单片机AT89S51与ADC0809设计一个数字电压表，能够测量0－5V之间的直流电压值，四位数码显示，但要求使用的元器件数目最少。-Simple digital voltage meter design, the use of single-chip AT89S51 with ADC0809 to design a digital voltage meter, capable of measuring between 0-5V DC voltage value, four digital display, but requires the use of minimum number of components.

DS18B20实时测量温度，并通过单片机控制显示，显示装置用数码管 -DS18B20 real-time measurement of temperature, and through single-chip control shows that display devices with digital control

c51写的，数码管显示以及键盘接口专用控制芯片芯片BC7281与MCU串行通信的解决方案的实例程序。在c51里的移植基本不需要改动。-decoder, a digital control display and keyboard interface dedicated controller chips BC7281 and MCU chip serial communications solutions examples of procedures. C51 Lane in the transplant is not needed changes.

AT89c2051控制9200b发双音频码用8870解码并将BCD码返回AT89C2051,然后比较的源代码和Hex文件。-AT89c2051 Two-control 9200b audio decoder yards with 8,870 and will return to BCD AT89C2051, then compare the source code and Hex documents.

用8051控制DDS信号发生器，产生1HZ-10MHz的正弦波/三角波/方波-DDS with 8051 control signal generator, producing the 1HZ-10MHz sine/triangle/square wave

数码管的显示操作，同时也有按键操作程序，通过单片机控制可以直接进行显示-Digital tube display operation, but also has key operating procedures, can be directly controlled through the single-chip display

大值的驱动电压，否则会造成液晶模块的损坏。如果在低于或大致等于典型驱动电压时，观察到了显示屏上有色调的变化，即显示域的底色略深于边缘的颜色，表明液晶模块电源连接正确，可以进人下一步工作。如-Large value of driving voltage, otherwise LCD module can cause damage. If less than or roughly equivalent to a typical drive voltage, the observed screen has color changes, which indicates that the domain a little deep background color at the edges, indicating that the LCD module power supply connections are correct, you can enter the next step. Such as

msp430 it s my code!please read it,thank you!

用来做键盘和显示的芯片7279的源代码，用C编的-Used to make the keyboard and display the source code of 7279 chips, with C-series

AD0809 在51 单片机中的应用.pdf-AD0809 in 51 MCU. Pdf