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现代自动测控系统中,可程控且带GP-IB的测控设备中,其通用接口部份的实验方法是:对控制器即微计算机或IEC母线控制器通常以软件实现其接口功能,而对大量的形形色色的常规测控仪器来说,都使用大规模集成电路——接口母线芯片(Inter face bus chips)。此类芯片几乎能包括接口功能的全部(十种功能),像Motorola公司的MC68488(讲者/听者),INtel 公司的8291(讲者/听者),8292(控者),Philips的HEF-4738(讲者/听者)及 Texas 的TMS9914(讲者,听者,控者)均系此类产品。本文将以HEF-4738芯片为例来说明这种大规模集成电路的使用方法。图1是以HEF4738为核心构成的通用接
Modern automatic measurement and control systems, programmable GP-IB with the test and control equipment, the common interface part of the experimental method is: the controller that is micro-computer or IEC bus controller software interface to achieve its usual function, and a large number of Of all kinds of conventional measurement and control instruments, the use of large-scale integrated circuits - interface bus chip (Inter face bus chips). Such chips can include almost all of the interface functions (ten functions) such as Motorola’s MC68488 (speaker / listener), INtel’s 8291 (speaker / listener), 8292 (controller), Philips’s HEF -4738 (speaker / listener) and Texas TMS9914 (speaker, listener, controller) are all examples of these products. This article will HEF-4738 chip as an example to illustrate the use of such large-scale integrated circuits. Figure 1 is based on HEF4738 constitute a universal access