This code is related to the realization of the source code for USB functions, in...

利用单片机产生音乐的程序， 优化的音符编码是这个程序最大的优点。-Single-chip computer generated music program, and optimize the code notes that the greatest advantages of this procedure.

VB6.0小程序控制单片机P1口8位LED.很好用的-VB6.0 small program P1 mouth Singlechip 8 LED. Well used

简易文件系统，支持ATA SD MMC等-Simple file system, support for ATA SD MMC, etc.

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.

键盘按键程序,C语言编写的-Keystroke procedures, C language

ST9720控制器的12864液晶程序，同时兼容12232，本程序使用串行接法。只需三个管脚。-ST9720 LCD controller 12864 program is compatible with 12232, this program uses a serial access method. Just three pins.

单片机实验，实现双字节无符号数的加法，利用查表指令，在此基础上可以学习查表指令的用法-SCM experiment, to achieve double-byte unsigned number of addition, using look-up table instructions, on this basis, can learn the usage of table look-up instruction

mcf5272的引脚比较多，设计原理图的时候比较复杂，可以用该的规范原理图，protel99se格式。-MCF5272 more of the pin, when the schematic design more complicated, can be used in the schematic diagram of the specification, protel99se format.

1―wire总线的详细介绍，对有设计硬件电路的同志有帮助-1-wire bus detailed description of the hardware design of a circuit to help comrades

频率计，精度高，可以自动换档，一般单片机可以达到0…500k-Frequency, high precision, can automatic transmission, the general single-chip microcomputer can be 0 ... 500k