4 keyboard test procedure four keyboard test procedures

俄罗斯方块程序 ,本压缩包里面含有原理图和远程序(Proteus),-Russian box procedure, the compressed packet inside contains schematic and far from the procedure (Proteus),

语音芯片PM50八方源代码，在播音函数中写入你需要播音的例子即可播放对应的语音。-voice chip PM50 from all source code, the audio function you need to write radio broadcast of examples corresponding voice.

DK3200开发板上的ADC开发出的AD和PWM应用程序，可以在LED上显示测量结果-DK3200 Development Board of the ADC developed AD and PWM applications, can be displayed on LED measurement results

c51 写的常用源码!-common source!

Protel 99中的快捷键 非常好用 -Protel 99 in very handy shortcut keys

利用单片机定时计数器，测量信号频率： 利用单片机定时计数器，测量信号频率-The use of single-chip timer counters, measuring signal frequency: use of single-chip timer counters, measuring signal frequency

利用51单片机及其接口电路模拟DMA的控制过程，由于数据的传输实际上不经过CPU而直接由A/D转换芯片传送到存储器，从而实现了数据的高速传送。-The use of 51 single-chip circuit simulation and its interface DMA control process, because the data transmission does not actually read the CPU and directly from the A/D conversion chip is sent to memory, thus realizing high-speed data transmission.

用电子警察上面，在汽车有违章是 可以把他给抓拍下来-electronic above, the car can be a violation him down to snapper

图形点阵液晶模块相关的各种面板大小驱动程序。-graphics dot-matrix LCD modules related to the panel size driver.

TFT液晶控制程序 -TFT LCD control procedures TFT LCD control procedures TFT LCD control procedures