4*4键盘扫描 参数以定义 直接使用

本人非常支持单片机设计DIY 在这里再次献出小弟的一点心意,下面是使用AT89S52驱动74HC4015,实现1选择8的数据通道切换器,可以在不8个通道出加上不同大小的电阻.可以用来单声道音量的大小控制. 下面作品图是小弟设计的廉价的 基于单片机的毕业设计 ,它还使用了无线接收发送模块,通过使用手上的遥控器能控制音量的大小,还加了一块HCF4052用于输入音道的选择,支持思路音频信号的输入,一路音频信号的输出: -I very much support the single-chip design DIY here again gave a little boy s mind is to use the following AT89S52 drive 74HC4015, to achieve a choice of 8 switches the data channel, you can not add the 8-channel resistance of different sizes. Can used to the size of mono volume control. The following work plan is designed小弟cheap graduation based on single-chip design, it uses the wireless receiver send module, through the use of the hands of the remote control can control the volume size, but also Add a piece of HCF4052 Road for the importation of sound choices, to support the idea of audio signal input, the output audio signal all the way:

C8051F040 t3可调频率方波输出例程-C8051F040 adjustable frequency square-wave output routines

一个AVR单片机的学习程序，在这特感谢我的师哥朱哥，在我学习的时候给我莫大的关怀和帮助！-An AVR MCU learning process, in this special tribute to my brother师哥Zhu, in my time of learning for me great concern and help!

用C语言读写CF卡程序 非常不错的东西-Used C language literacy CF card procedures very good things

基于单片机c8051F020开发环境下的计数器程序代码-C8051F020 development environment based on the single-chip counters under the code

LPC2103的第一个实验：流水灯，用proteus7仿真，C语言代码，在Keil3中编译，文件内已有完整的工程和仿真图了。-The first experiment LPC2103: water lamp, with proteus7 simulation, C language code, compiled at Keil3 in the paper that has a complete map of the engineering and simulation.

PROTUES是个高效率的在线仿真软件,该锦集为在线仿真的应用.里面的资料,包含了各个内容的原程序和原理图等.

学习C51时写的定时器程序,提供给刚学单片机程序的朋友参考-C51 when learning to write timer procedures, available to just school friends Singlechip procedure reference

LT_1B msp430开发板例子程序－UART_U24-LT_1B msp430开发板例子程序－UART_U2400

用单片机实现无线收发,cc2400应用-Wireless transceiver with MCU, cc2400 applications. . . . . .