C51很好的IO模拟串口程序，也称软件UART。只需用一个定时器，实现中断接收。程序编写得很规范，有很多个晶振频率和串口频率可选。是一个比较好的软件串口程序。...

c编程高级技巧，软件高手必读-c senior programming skills, master the required reading software

在单片机上完全实现sd卡功能，对扇区操作都很详细。-In single-chip fully realized the sd card function, sector operations are detailed.

单片机用T1中断在IO口P1.0输出乐曲(在P1.0口与VCC间接一喇叭即可听到) 1.由于输出的是方波，比较难听:-)你也可以将波形细分用DA输出正弦波 2.由于T1频繁中断，任何其他中断发生都会是乐曲打顿，只适合试验 3.优化音符编码：一个字节中包含节拍、音符、升降调，可区分数据和命令 -Single-chip microcomputer used in the IO port T1 interrupt output music P1.0 (P1.0 port with VCC in the indirect one can hear the speaker) 1. As the output is a square wave, more bluntly :-) You can also fine-waveform DA output sine wave with sub-2. Due to the frequent interruption of T1, any other interruption occurs Dayton will be playing music, is only suitable for test 3. optimized coding notes: A byte contains rhythms, notes, take-off and landing tune can distinguish between data and command

用于分析各种点阵字库结构和程序，对嵌入式或单片机开发很有帮助。-Font used to analyze the various lattice structures and procedures to develop single-chip embedded or helpful.

非接触式ic卡读写程序,希望对大家有帮助-Non-contact ic card reader program, and they hope to have everyone help

用于TI公司的TMS320LF2407上的程序，可以产生空间矢量pwm波型-For TI

51+DS1302+gsm源代码，相信对大家有点启发-51+ DS1302+ Gsm source code, I believe we are a bit of inspiration

ICCAVR编写128*64液晶程序测试已经通过-ICCAVR the preparation of 128* 64 LCD testing procedures have been adopted

手写IC（EPH1100）的80C51驱动软件。-handwritten IC (EPH1100) 80C51-driven software.