文介绍一种用单片机普通I/O 口实现串行通信的方法，可在单片机的最小应用系统中实现与两个以上串行接口设备的多机通信。附有电路图和源代码。-text introduces a microcontroller I/O port serial communications, in the smallest single-chip microcomputer application system to achieve more with two serial interfaces of multi-machine communication. With circuit and the source code.

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

无线模块2401收发,包含：18B20温度检测；串口通信1；数码管_键盘；AD-The wireless transceiver module 2401, including: 18B20 temperature detection serial communication 1 digital tube _ keyboard AD, etc.

采用PIC单片机写的时钟小作品-PIC Singlechip used to write small clock works

使用68HC705J1A写的一个键盘的代码,包括资料说明,一份难得的资料,本人开发键盘时好不容易才找到的资料-68HC705J1A use of a keyboard to write code, including the information note, a rare information, I developed the keyboard is not easy to find when the information

单片机子程序,C源代码,4X4矩阵键盘,KEIL C开发环境.-Singlechip subroutine, C source code, 4X4 matrix keyboard, KEIL C development environment.

HX8238 LCD Driver Spec.

51单片机C语言多种点阵屏驱动程序（开发软件为keil C ---8字点阵屏左移程序，64_16点阵屏驱动程序，上移显示程序，左移显示程序）51 monolithic integrated circuit C language many kinds of lattice screen driver (develops the software is keil C ---8 character lattice screen left shift procedure, the 64_16 lattice screen driver, uppers shift the display sequence, the left shift display sequence -51 Singlechip C language a variety of dot-matrix screen driver (development of software for keil C--- 8 character dot matrix screen left procedures 64_16 dot-matrix screen driver, on the shift display program, the left display program) 51 monolithic integrated circuit C language many kinds of lattice screen driver (develops the software is keil C--- 8 character lattice screen left shift procedure, the 64_16 lattice screen driver, uppers shift the display sequence, the left shift display sequence

《单片机通信技术与工程实践》一书的源码-"SCM communication technology and engineering practice," a source book

由SPCE061A控制的A/D转换器AD977的驱动程序-SPCE061A controlled by the A/D converter AD977 drivers