下一次升级W78E516B在线数字机的源代码，包括测试程序…

对AVR单片机的初学者来说，学习其定时器和中断的极好的例子！-AVR microcontroller for beginners to learn the timer and interrupt an excellent example!

22个51单片机的实例，全部带源码和Proteus仿真。-22 of 51 examples of single-chip, all with source and Proteus simulation.

c8051-nrf2401 测试程序 发送部分-NRF2401_receive2 c8051f330

51读写U盘全套技术资料,原理图,KEIL C51原代码-U disk 51 to read and write a full set of technical information, schematics, KEIL C51 original code

一个用单片机控制饲服电机的程序，采用ＯＭＲＯＮ光纤感应器实现的剪纸机，已通过调试-By feeding a single-chip microcomputer to control the electrical service procedures, the use of fiber-optic sensor OMRON realize the paper-cutting machines, has passed through debugging

51单片机的源程序集，有存储器，点阵式液晶，进制转换，led,ad等。-51 SCM source collection, storage, dot-matrix LCD, the base for the conversion, led, ad so.

a good program for battery charge,only for reference

通过编程实现对LCD的驱动，实现能在LCD显示器上显示字符和数字。-Through the programming of the LCD driver, able to realize in the LCD display to show characters and numbers.

本课题所研究的可存储虚拟示波器定位为低档型，即在性能上只需满足大多场合的基本应用，努力实现小型化，价格尽可能低廉，这样在财力有限的小用户（电子爱好者、小型企业）中能够普及，在大用户的使用中发挥便携性强的优势，与高档示波器配合使用，互相取长补短。-Studied this subject can be stored as a virtual oscilloscope-type low-grade, that is, in terms of performance on most occasions, only to meet the basic application, and strive to realize miniaturization and low prices as much as possible so that limited financial resources to small users (electronic enthusiasts, small enterprises) can be universal, in the use of large users to play a strong advantage of portability, high-end oscilloscope used in conjunction with each other.

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