一个时时单片机发送数据测试代码

ATC89C51下开发的带万年历的电子钟设计，可设置4个闹钟-ATC89C51 developed under the electronic clock with calendar design, you can set 4 alarm clocks

IO 口模拟232通讯程序 使用两种方式的C程序 占用定时器0 -IO simulated 232 communications programs use two forms of occupation C program timer 0

友达LCD 2.8寸,配ILI9320的驱动程序.-AUO LCD 2.8 inch, with ILI9320 drivers.

鉴于MCS-51系统只提供“二级中断嵌套”，提出扩展51系统中断优先级的纯软件方法。其利用51系统内建的中断允许寄存器IE和中断优先级寄存器IP，通过屏蔽字机制来实现；以C51的形式，给出这种扩展方法的函数库实现，为该方法的使用赋予友好、简洁的用户接口。-Given MCS-51 systems only provide "two interrupt nesting," expanded 51 priority system interruption of pure software. The use of 51 built-in system allows interruption Register IE and priority interrupt register IP, through word shielding mechanisms to achieve; C51 in the form of this expansion is the way to achieve functions, methods for the use of empowerment friendly, simple user interface.

Keil Cx51 V7_0单片机高级语言编程与_uVision2应用实践 徐爱均 彭秀华主编 电子工业出版社-a classic mcu programming book about keil

基于NRF905 915M频率的232通信-NRF905 915M based on the frequency of 232 communications

流水灯：灯从最低位P0.0开始向高位依次点亮-Water lights: lights from the lowest to the highest followed by P0.0 lit

PROTEL 99SE快速入门指南，是初学者的良师益友。-PROTEL 99SE Quick Start Guide is a mentor for beginners.

51控制STA013实现MP3音频解码，实现了STA013的初始化、音量调节、静音、音质设置、声道控制。同时包含通过RS232串口控制LCD实现同步显示。代码经过调试，运行通过。

用普单片机实现低成本高精度A_D与D_A转换关键词 单片机 　A/D转换 　D/A转换 　PWM(脉冲宽度调制)比较器-Pu realize low-cost single-chip microcomputer with high-precision conversion A_D with D_A Key words Single-chip A/D converter D/A converter PWM (pulse width modulation) comparator