The performances of two types of multiprocessor systems with cache memories dedicated to each processor are analyzed. It is demonstrated that by appropriate cache system design, adequate memory system speed can be achieved to keep the processors busy. A write through algorithm is used for each cache to minimize directory searching and several main memory… (More)
Interest in integrating voice and data on local computer networks has been building in recent years. Subsequently, much research has been devoted to various techniques that are implementable on existing networks using current standards. This exposition discusses the design issues in implementing a document retrieval system on a token ring network.
Because there are no very fast, cheap, reliable memories on the technological horizon, memory hierarchies will continue to play a key role in computer system design.
Recently, three types of memories have been proposed as possible main memory extensions and replacements for head per track disks or drums; these are CCD, bubble, and BEAMOS memories.<sup>1,2,3</sup>The extent to which these memories come into widespread use will depend on such factors as cost, performance, reliability, maintainability and profitability. In… (More)
~~~~~~IowaState High-speed memory systems have enjoyed 30 years of nearly exponential growth-a rise that semiconductor technology should continue as bit densities increase and prices per bit decrease. 162 H igh-speed memories, a key part of computer systems from the beginning of the computer era, have often kept us from achieving a desired performance… (More)
Current nonvolatile magnetoresistive random access memory (MRAM) designs that are being pursued by industry for commercial markets are not well suited to military and space missions. They consume a fair amount of power, making them unsuited for long battery-powered missions. They are not designed for radiation environments, requiring weight-restrictive… (More)
In this introduction to hardware design topics within the ongoing tutorial series, the editors accent the essential link between software and hardware design.