 | Computer networks |
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 | Value Added Global Databases Search Through Wide Area Network
Author : Baokar, Anjali;Sundareshware, P.R.;Joshi, M.R.
Source : Defence Science Journal ; Vol:43(2) ; 1993 ; pp 145-150
Subject : 681.3 Computer Science
Keywords : Local area network;Dialog databases;Computer networks
Abstract : Online database searches have become common and a number of American and European databases have become very popular due to their specification in specialization in specific fields, notably those related to science and engineering. Although the telecommunication charges are relatively low, the specific databases charges are substantial, depending upon the specific area of specification. This paper discusses the access and search of global databases, value-addition through organisation of the received data and sharing of the organised data with local area network. The original organised database when accessed and downloaded becomes an ASCII file. If the selected database is to be reconstructed at the receiving end, it is a laborious task of manual data entry which could be very slow and error-prone. A program developed for automated conversion of the ASCII file into a standard database format is described. A cost-effective system for sharing the above organised data within the city and across the country using the existing and coming networks is proposed. |
| | Multiple Access Techniques: An Overview
Author : Maskara , S.L.
Source : Defence Science Journal ; Vol:43(1) ; 1993 ; pp 53-58
Subject : 623.61 Military Communications
Keywords : Satellite communications;Computer networks
Abstract : Multiple access techniques provide a means of sharing the network media, nodes, peripheral devices, and information/databases have become very important particularly because of the expansion in the number and location of users. In this paper an overview of the different resources for multiple access and their optimum use by proper assignment and control has been presented in a unified manner to embrace satellite communications as well as the computer networks. |
| | Design of Interface Hardware and Software for DNC System
Author : Kaul, I.K.;Yadav, D.R.;Yadav, J.P.
Source : Defence Science Journal ; Vol:44(2) ; 1994 ; pp 139-146
Subject : 681.3 Computer Science
Keywords : Distributed numerical control;Computer networks;Software interfaces;Computer aided design
Abstract : This paper describes in detail an indigenous state-of-the-art DNC system designed, developed, fabricated and installed at DRDL NC Centre. It describes the hardware and software interfaces designed and developed in-house. At present, it supports a total of 16 CNC machines, 8 in serial port and the balance in parallel port. This system has the capability of extension up to 64 machines. During last one year of its installation and working it has been found to be extremely reliable. |
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