MCS-51单片机实用子程序库

管理信息系统开发案例，详细介绍了开发流程包含各种要素，可以作为参考。-Management information system development case, detailing the development process includes a variety of factors can serve as a reference.

本作品采用Atmel公司的AT89C51单片机，以汇编语言为程序设计的基础，设计一个用四位数码管显示时、分的时钟。在实物图中，左边靠近电源的绿色发光二极管（长亮）是电源指示灯，表示的是5V稳定电源工作正常；单片机左下角红色发光二极管是秒灯，每闪烁一次表示时间走动一秒钟；按键正上方绿色发光二极管是设置灯，当时间正常走动时此时不亮，当第一次按下设置键（右键）时，此绿灯亮，同时秒时熄灭，且分钟的两位数码管出现闪烁，时间停止走动，进入校时状态，表示此时可以进行分钟的调整，当按一次加一键（左键）可实现分钟的加一功能，分钟以60分为极限，超出60分则返回数值0，从0再重新算起；如果再次按下设置键时，这时秒灯和设置灯仍旧保持熄灭和点亮状态，表示分钟的数码管停止闪烁，反过来表示小时的两位数码管则开始闪烁，此时可进行小时的调整，按加1键可实现小时的加1功能，小时调整以24为上限，同样超出24小时则从新回0；当第三次按下设置键时，数码管停止闪烁，设置灯熄灭，秒灯重新闪烁，时间以设定值计时。-err

ADI公司基于其公司的ADC,DAC及DDC,DUC提出的基站结构设计方案。-ADI based company ADC, DAC and DDC. DUC structure of the base station design.

最新视频编码标准H_264及其核心技术.PDF-H_264 the latest video coding standard and its core technology. PDF

ST7787 芯片的SPEC，比亚迪2.4inchLCM的SPEC。The ST7787 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 720 source line and 320 gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and accepts Serial Peripheral Interface (SPI), 8-bits/9-bits/16-bits/18-bits parallel interface. Display data can be stored in the on-chip display data RAM of 240x320x18 bits. It can perform display data RAM read/write operation with no external operation clock to minimize power consumption. In addition, because of the integrated power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components.-ST7787 chip SPEC, BYD 2.4inchLCM the SPEC. The ST7787 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 720 source line and320 gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and a

给出了一种适用于PHS基带系统中的高性能成形滤波器,对比两种实现方法在基带芯片中 的性能,利用最少的非零比特位来表示符号数的编码技术即符号数(Canonic Sign Digit, CSD) 。-Applicable to this paper, a PHS base band system of high-performance shaping filter, compares the two methods in the base-band chip performance, the use of the least bit non-zero-bit symbols to express the number of coding technology that is the number of symbols ( Canonic Sign Digit, CSD).

SHT10数字温湿度传感器，可以直接与单片机接口，接口简单，提供c源代码程序-SHT10 digital temperature and humidity sensors, can interface directly with the single-chip microcomputer, interface is simple, to provide the source code program c

基于XscalePXA270的PCMCIA-CF接口设计方案,非原创,转载-XscalePXA270 based on the PCMCIA-CF interface design, non-original, reprinted

操作系统设计说明第三版。英语，经典的操作系统的设计说明书籍-third edition of the operating system design. English, the classic operating system design note books

出租车计费系统，可通过修改数据改变计费价格及起步里程.-Taxi billing system can be changed by modifying the data on prices and start charging mileage.