这是教你怎么利用单片机进行音乐的播放程序，非常好用

240128液晶显示的头文件,包括了字符显示子程序与点阵显示子程序-The first liquid crystal display 240,128 documents, including a character display with dot matrix display subroutine subprogram

单片机音乐 用于播放简单的音乐 实现音乐盒功能-Singlechip music used to play simple music box music to achieve functional

CC2420基本收发功能的实现。mcu：msp430-The realization of the basic functions CC2420 transceiver. mcu: msp430

汽车侧滑台检测仪表．用的单片机是PIC16F877A. 产品经过市场检验-Automotive instrumentation Sideslip Taiwan. Single-chip microcomputer is used PIC16F877A. Products have been market tested

With the program AD9854C.exe one can set and tune the frequency in CW-mode. For use as a receiver LO also IF can be given and the both possible receiving frequencies are printed on the screen. The level in Q-outputs can be varied by giving the wanted attenuation in dB. This function is done by controlling a 12b digital multiplier in the device. In this case the level decreases somewhat with increasing frequency as it does in DDS devices. Alternatively the inverse sinc correction can be chosen, in which case the output is flat and high. -With the program AD9854C.exe one can set and tune the frequency in CW-mode. For use as a receiver LO also IF can be given and the both possible receiving frequencies are printed on the screen. The level in Q-outputs can be varied by giving the wanted attenuation in dB. This function is done by controlling a 12b digital multiplier in the device. In this case the level decreases somewhat with increasing frequency as it does in DDS devices. Alternatively t

51单片机 keil c 延时程序的简单研究.-51 Single-chip delay keil c program simple research.

基于AVR系列单片机MEGA8的PS2键盘驱动程序，代码中加了去抖动处理，识别率高。 -based MCUs MEGA8 PS2 keyboard drivers, code added to jitter, high recognition rate.

SD卡驱动 SD_CARD_TIMEOUT 当一个SD卡的操作超出时限，将导致返回错误和该标记被置位 SD_CARD_EXIST 当卡槽内插入了合适的卡体，不管是什么卡，都会使该位被设置； SD_CARD_WRITE_PROTECT 当卡体的写保护开关被 LOCK 时，则该位被设置； SD_CARD_READY 当卡槽内的卡被正确识别，并可以随时访问时，则该位被设置； SD_CARD_DOOR_CLOSE 当卡槽的门（产品外壳上的挡板开关）关闭时，则该位被设置； SD_CARD_IS_SD 当卡槽内插入的是 SD 卡时，则该位被设置。 SD_CARD_IS_MMC 当卡槽内插入的是 MMC 卡时，则该位被设置； 注意：不要使用 0x80，免得和整数作逻辑运算时被误为负数。-err

用软件模拟I2C的源代码，内有说明-I2C software simulation source code, which is described

单片机中的ADC模块，在CVAVR中已实现。-ADC in single-chip modules, has been in CVAVR realize.