数据总线

The design of demultiplex er is developed in this project, which is the component of PCI bus signal digital multiplex system, and the study object is the data transmission of PCI bus in the Magnetic Environment Simulation System of Wireless Communication.

本课题研究的是PCI总线信号数字复接系统——分接子系统的设计，并以通信信号电磁环境模拟器系统中的PCI总线数据传输为具体研究对象。

Data traffic system of ARINC429 bus is composed of data send/receive module, expand memory module, supervise module and so on. The system is designed as two grades: lower and upper PC.

基于80C196的Arinc429总线数据通信系统由总线发送/接收、扩展存储、监控等模块组成。

Extended Industry Standard Architecture expansion bus, based on the IBM PC AT bus, but extended to 32 bits of address and data.

以 IBM PC AT 总线为基础实现的扩展工业标准结构总线，但是地址和数据均扩展到32位。

The AT bus supports 16 bits of data in one slug, whereas the original IBM PC supported only 8 bits (and was called the ISA bus for Industry Standard Architecture).

在一块小金属块上，AT总线支持16位数据，而早期IBM 个人电脑仅支持8位（工业标准体系称之为ISA总线）。

The system uses temperature and humidity sensor SHT11 and smoke sensor MQ-N5 to collect data. SHT11 is a digital sensor with highly integrated inner system and anti-jamming capacity, which makes the collected signal more precise. The integrated I2C bus interface is a sensor, which can directly connect with any type of microprocessor and microcontroller system, it is very simple and practical.

本系统采用温湿度传感器SHT11和烟雾传感器MQ-N5来采集数据，SHT11是个数字传感器，内部高度集成，抗干扰性能，使采集的信号更准确，集成的I2C总线接口能是传感器可直接通过I2C总线与任何类型的微处理器、微控制器系统连接，十分简单实用。

ARINC429 bus is the transmission standard of digital bus in aviation electronic equipment, and now it is widely used in different kinds of aviation electronic equipments. So the effective, convenient and credible data transmission is an important premise to ensure resource sharing and information interfusion.

ARINC429总线是航空电子设备的数字总线传输标准，目前广泛应用于各种航空电子设备中，其有效、便捷、可靠的数据传输是保证设备之间资源共享和信息传输的重要前提。

The bus type structure contains a list of all devices that are on that bus type in the system.

总线类型数据结构包含了一系列的设备，这些设备在系统中是挂载该总线上的

It studies the types, position, alarm value of the sensor and the network message, data flow of the system.

设计了基于CAN总线和单总线二层网络的火灾状态识别系统硬件结构，对传感器选型、安装位置、报警阈值以及系统通信协议、信号内容、数据流向等方面进行了一定深度的研究。

Because it s data transmit rate is low and automatical configuration of the resources is not supportable , ISA bus is gradually replaced by PCI bus.

由于ISA 总线数据传输率低、不支持资源的自动配置，逐渐被性能突出的 PCI 总线所取代。

This paper studied a new calorimetry system of data transferring,processing and controlling,which based on the PCI bus.

研究了一种基于PCI总线数据传输、处理、控制的新型量热仪系统，给出了详细的系统控制方案，介绍了PCI总线接口芯片PCI9052在ISA模式下的相关硬件设计、寄存器配置以及驱动程序模块设计思路。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。