Buzzer buzzer ring to change the frequency by changing the delay time if the buz...

仪器仪表键盘显示模拟系统，用AT89S52芯片作为系统的CPU，控制系统的按键及显示器部分。用8路同相三态双向总线收发器74LS245芯片驱动LED。4X4矩阵键盘作为系统人机交互的重要部分，用于向单片机应用系统输入数据或控制信息，设计4X4矩阵键盘分别对应键码“0-F”。系统可以实现的基本功能包括开机LCD液晶屏幕显示“大专05电子信息X班XXX毕业设计”信息；按下任意一个按键，LCD液晶屏幕显示相应按键的信息。在基本功能的基础上还增加了一个扩展功能，即增加一个LED数码管同步显示相应键码-Show the simulated keyboard instrumentation systems, using AT89S52 chip as a system CPU, system control buttons and display parts. With 8-phase three-state bidirectional bus transceiver 74LS245 chip-driven LED. 4X4 matrix keyboard system as an important part of human-computer interaction, single-chip microcomputer application system used to input data or control information, the design of 4X4 matrix keyboard key code corresponding to

此程序实现任意波形发生器的菜单选择操作及向FPGA发送控制命令，实现任意波形发生并能将产生的组合波保存下来，有掉电保护的功能-Realize this procedure arbitrary waveform generator of the menu to select the operation and send control commands to the FPGA to achieve arbitrary waveform occurs and can produce a combination of wave preserved, has brown-out protection function

lm2576S-5 电压变频器，经典电路接发-lm2576S-5 voltage inverter circuit receiving classic

SPCE061单片机介绍PPT文档.ppt,对于学习凌阳单片机真实不可多得的好材料-SPCE061 SCM introduced PPT files. Ppt, learning true Sunplus SCM very good material

c8051f040 内部集成的温度传感器使用 直接给出温度的函数 -c8051f040 internal temperature sensor integrated the use of a direct function of temperature are given

grads ditu find in lasg-grads cnriver & cnprovince

关于SPLC501C的液晶编程，实现了音乐动画，有参考价值-on SPLC501C LCD programming, animation realization of the music, a reference value

8051单片机矩阵键盘扫描程序（包括键盘的消抖和数码管的显示）-8051 keyboard matrix scanning process (including the elimination Buffeting keyboard and digital display control)

压缩包内有DS18B20和AT89C51实现的温度采集器的仿真电路和源程序代码,并有LED显示当前采集温度.内附DS18B20的中文资料.-Compression packages have DS18B20 and realize AT89C51 temperature collector circuit and the simulation source code, and have LED displays the current temperature acquisition. DS18B20 containing the Chinese information.

MSP430F1611U盘数据读写 通过调试-MSP430F1611U disk read and write data through the Debug