基于1602LCD的秒表，MCU STC89C51RC。

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

单片机延时子程序-Singlechip Delay Subroutine

12bitAD转换芯片AD1674的应用，转换数据由1602液晶显示-AD1674 chip 12bitAD conversion applications, conversion of data from the 1602 LCD

max7219 led drive program 包括/功能函数定义和测试程序显示-max7219 led drive program includes/function definitions and test procedures show

avr Led test program in c

单片微机原理及应用,MCS-51硬件结构-Single-chip Microcomputer Principle and Application, MCS-51 hardware structure

详细介绍了51单片机的指令系统，通过此文档进一步了解51单片机的体系结构-Detailed instructions for 51 single-chip system, the adoption of this document to learn more about 51 single-chip architecture

凌阳061a单片机的定时器使用例程。包括两个定时例子-Sunplus 061A routine use of single-chip timer. Includes two examples from time to time

51单片机读写usb移动硬盘。提供全套资料，原理图，固件源代码。-usb mass storage module

Barcode source for scaner barcode