前面 1.(位置靠前) in front; at the head; ahead 前面的房间 a front room; 走在队列前面 march at the head of the column; 请往前面走。 please go ahead.2.(次序靠前) above; preceding; forepart 前面的一章 the preceding chapter; 前面提到的规则 the above-mentioned rule
The whole part of the data acquisition is build in a computer as two data acquisition cards . they are front card and rear card . the front card composed of four modules . they are : coin circuit module , data flow controller module , sdram array module and system bus interface module . the rear card composed of four odules . they are : asynchronous serial port interface module , adc control odule , ecg signal process module and gate control data produce module 数据采集模式实现部分的大部分工作是在前面板上完成的,后面板主要是一些外围电路。前面板采集卡上从物理上来说主要有四块电路:符合电路,数据流控制器电路, sdram阵列和系统总线接口电路组成。后面板采集卡从总体物理上主要有四块电路组成: 485串行通信电路, adc控制电路,心电数据处理电路和门控信号产生电路。
The nucleus is the software in the design and realization of virtual instruments . we use the design method of module and use many papers to describe the whole building process of the typical signal generation module , date handling module , date reading and writing module , resultdemonstrate module . as the conclusions , we also offer the panels and the diagrams of virtual signal frequency spectrum analytical instrument , virtual butterworth filter , virtual signal generation instrument , virtual integrator and differentiator regulator and amplitude modulation wave counter modulation instrument 本文采用模块化设计方法,详细描述了典型信号生成模块、数据处理模块、数据读取和存储模块、显示模块等软件开发的全过程,分析、解决了设计及实现过程中出现的问题,并给出了已实现的虚拟信号频谱分析仪、虚拟巴特沃斯滤波器、调幅波解调器、虚拟信号发生器、虚拟积分器和微分器等实验教学用虚拟仪器的前面板图和程序流程图。
By combining the leaders in switching , computing , and chassis engineering , this next - generation atca platform was successfully brought to market in 1 3 the typical development time to meet aggressive deployment schedules of the carrier . the zx5000 delivers 16 gigabit ethernet ports in the atca 8u form factor . an atca base fabric gigabit ethernet connection is provided for each of the 12 atca payload slots Zx5000在atca 8u板型上提供16个千兆以太网接口,为12个atca负载槽位提供千兆以太网连接,同时zx5000在前面板上提供三个10 100 1000电口,而openarchitect管理软件可以将这些接口"集束成"一个3千兆位的管道。