upd 51 6464a acquisition procedures compilation directives

pic16f877a和LCD1602一个简单的霹雳灯

提供了键盘的扫描码目录，可以通过查询实现相关热键的拦截。-Provides a keyboard scan code directory, can be achieved by querying the relevant hotkey to intercept.

步进电机加减速控制-Stepper motor speed control

An example to illustrate how to set the internal adjustable CID gain and receive FSK or DTMF data. Assume end-code of DTMF data string is "D".-An example to illustrate how to set the inte CID rnal adjustable gain and receive FSK or DTMF data. Assume end-of DTMF code data string is "D" .

本题目的主要要求是要实现闹钟的功能内容：设计一个能够显示时分秒的数字时钟，时间显示为12小时制，除了显示分时秒外，并能实现上，下午。可以进行手动校时，定时（完成此题目时要有适当的设置，确定灯按钮，单，双灯作为报警显示），同时还应该能够清零。-the subject of the main demands is to achieve the alarm clock function : to design a display of accurate digital clock, the time displayed by the system for 12 hours, showing the time of seconds, and can achieve the afternoon. Can manually school, regular (completion of this topic have appropriate settings, to determine button lights alone, as the police showed two-lamp), but also should be able to reset.

定时同步是UWB通信系统中至关重要的问题，定时偏差和抖动将严重影响接收机性能。一般定时同步分为捕获和跟踪两个阶段。在捕获阶段，要求接收机快速搜索信号到达时间，并根据搜索结果调整接收机定时.-Timing Synchronization UWB communication systems is of vital importance to the issue, timing error and jitter will seriously affect the receiver performance. Timing Synchronization generally divided into two stages to capture and track. In the capture stage, the request receiver Quick Search signal arrival time, and adjust search results according to the receiver from time to time.

用汇编语言编写的兰花草音乐曲，实验时用51单片机一片，蜂鸣器一个，LM386一片，是学习51单片机典型实例，特共享给大家.-Written in assembly language orchids music music, experiments with a microcomputer 51, a buzzer, LM386 1, 51 MCU typical examples of learning, special to share to others.

进制转换，将数字以任意进制（2，8，10，16）输入，选择另一个进制（2，8，10，16）输出。-Hexadecimal conversion, digital to arbitrary M-ary (2,8,10,16) input, select another band (2,8,10,16) output.

PIC源程序头文件-PIC source files

定时闹钟的一个简单实用的程序，可以对现在时间以及闹钟时间进行修改．-Regular alarm clock, a simple and practical procedures, the time now, and can modify the alarm time.