Showing papers on "Application software published in 1972"

Computer-aided design of digital filters with finite word lengths

Abstract: A random search optimization algorithm for integer-valued functions is proposed. The application of the algorithm to the design of digital filters with finite word length is presented.

Terminal-oriented computer-communication networks

Abstract: Four examples of currently operating computer-communication networks are described in this tutorial paper. They include the TYMNET network, the GE Information Services network, the NASDAQ over-the-counter stock-quotation system, and the Computer Sciences Infonet. These networks all use programmable concentrators for combining a multiplicity of terminals. Included in the discussion for each network is a description of the overall network structure, the handling and transmission of messages, communication requirements, routing and reliability consideration where applicable, operating data and design specifications where available, and unique design features in the area of computer communications.

The design of large-scale networks

Abstract: The application of computer techniques to difficult large-scale network problems is discussed. The physical characteristics of two types of systems are described--computer-communication networks and cable television distribution systems. Two fundamental algorithms are presented, and applications to routing, reliability, and design of computer networks are given. The detailed engineering decisions that can be made by computer in the design of practical large-scale networks are illustrated by example for cable television systems. These examples are chosen to indicate the richness and difficulty of the problem of applying computers to network design.

Hardware Monitoring of Real-Time Computer System Performance

Abstract: This paper describes the planning and execution of a recent experiment which utilized a hardware monitor- ing device and associated analysis programs to evaluate the performance of a computer system which is employed for real-time satellite command and control. The evaluated system was the portion of the United States Air Force Satellite Control Facility Real-Time Data System, located in Sunnyvale, California. Communication line, processor, and channel utilization were analyzed, as was the interaction of Executive, Input/Output, and Application software modules.

Some Software Implications of CAMAC Instrumentation

Abstract: CAMAC provides an interface through which a computer interacts with its environment. External parameters are represented by hardware registers which are accessed by the computer in a unifom manner, therefore explicit I/O coding is unnecessary. The paper discusses the implications of implied I/O on software efficacy in real time systems.

CAMAc in Real-Time Computer Systems

Abstract: The performance of real-time systems depends or the combination of data acquisition and processing times. Programmed input-output is too slow and data channels are insufficiently flexible for general use with CAMAC. The provision of a separate peripheral processor gives optimum real-time performance. The overall design philosophy and the implications for system software are discussed.

Selecting and Applying Mini-Computer Control for Textile Industry Applications

Abstract: Some control problems in textile processes require or can justify a control computer in lieu of conventional type of control. How then should the typical user approach the selection and implementation of a system. The user must evaluate 1) buying the mini and applying it himself, 2) buying the mini from one vendor and system application from a ``software house,'' and 3) buying the computer and programming as an engineered control system from one vendor at what may initially appear to be a premium price. He will soon learn that the ``mini'' price tag balloons as he decides to actually do something with the basic box. Considerations of hardware, control oriented software and process-computer interface are discussed. Flexibility, reliability, and expandability of hardware and software as well as vendor experience and services offered are key features which should be evaluated as related to user's current needs.