Development of Unix

Operating system is a compulsory subject students STMIK Indonesia Padang. This course describes computer's operating system for control and management of hardware and computer software. Computer operating system is located on the first layer of hard disk drive. When computer is turned on, software first work is operating system and other new applications are processed. The results of observations on STMIK Indonesia Padang, 30% of students have not been able to understand the subject of Operating System. Instructional media should be formulated so that material is easy to understand. The computer as a learning tool Operating System can be made interactive learning media applications. Many interactive CD Operating System in circulation, only contains general material and do not develop subject of discussion. Research objective of designing learning media Operating System using Macromedia Flash, which can be used as ingredients in learning process for students. The subjects were students STMIK Indonesia Padang subjects Operating Systems.

Linux is a freely distributed, 32-bit, pre-emptive multi-tasking, multi-user operating system. Once developed for educational purpose it has become an attractive counterpart to its commercial competitors. Nowadays, Linux has been expanded from a simple UNIX kernel to a huge suite of applications and utilities developed by means of a GNU C/C++, JDK, TCP/IP and X Windows. The task of the paper is twofold: in the first part we focus the attention on Linux and show that this operating system is suitable to develop and run applications for factory automation. Therefore we present the design and implementation of the worldwide first device driver dedicated to that area: a Profibus-DP device driver. In the second part we introduce a gateway connecting Profibus-DP fieldbus systems to the Internet. By means of this Java-based gateway authorized users may control Profibus-DP devices remotely The only requirement to access the fieldbus is a workstation (regardless of its hardware and operating system) connected to the Internet and a standard Internet browser installed on it.

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Object-oriented models are a popular basis for supporting uniform sharing of data and services in operating systems, distributed programming systems, and database systems. We term systems that use objects for these purposes object sharing systems. Operating systems in common use have nonuniform addressing models, making the uniform object naming required by object sharing systems expensive and difficult to implement. We argue that emerging 64-bit architectures make it practical to support uniform naming at the virtual addressing level, eliminating a key implementation problem for object sharing systems. We describe facilities for object-based sharing of persistent data and services in Opal, an operating system we are developing for paged 64-bit architectures. The distinctive feature of Opal is that object sharing is supported in a runtime library, a,bove a single virtual address space that maps all primary and secondary storage in a local area network. This work was supported in part by the National Science Foundation under Grants No. CCR-8619663 and CCR8907666; by the Washington Technology Center; and by Digital Equipment Corporation through the Systems Research Center, DECwest Engineering, the External Research Program, and the Graduate Engineering Education Program. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the ACM copyright notice and the title of the publication and its date appear, and notico is Siven that copving is bv permission of the Association for Computing Machinery. To copy otherwise. or to republish, requires B fee and/or specific permission. o 1992 ACM 0-89791.539.9/92/0010/0397...$1.50

This report describes the gamma-ray analysis program VAXGAP, which has continually evolved at the Idaho National Engineering Laboratory over a period of several years. It is an integrated suite of computer programs for performing analyses of pulse-height spectra from high-resolution gamma-ray spectrometers and assorted support functions. VAXGAP programs operate on Digital Equipment Corporation (DEC) VAX computers running the VMS operating system, and were written in VAX FORTRAN and DEC Digital Command Language (DCL). These programs make use of DEC GKS and ReGIS for graphical output on standard terminals and printers, and DEC windows for graphics on workstations and terminals that support the X Window System protocol. This report addresses the use of VAXGAP for data acquisition and control, energy scale calibration, and real-time analyses of background and sample pulse-height spectra. Also addressed are the creation and use efficiency tables and isotope libraries, manipulation of spectrum files and their contents, and graphical display of on-going acquisitions, saved spectra, and mathematical fits to spectral peaks.

This report describes the gamma-ray analysis program VAXGAP, which has continually evolved at the Idaho National Engineering Laboratory over a period of several years. It is an integrated suite of computer programs for performing analyses of pulse-height spectra from high-resolution gamma-ray spectrometers and assorted support functions. VAXGAP programs operate on Digital Equipment Corporation (DEC) VAX computers running the VMS operating system, and were written in VAX FORTRAN and DEC Digital Command Language (DCL). These programs make use of DEC GKS and ReGIS for graphical output on standard terminals and printers, and DEC windows for graphics on workstations and terminals that support the X Window System protocol. This report addresses the use of VAXGAP for data acquisition and control, energy scale calibration, and real-time analyses of background and sample pulse-height spectra. Also addressed are the creation and use efficiency tables and isotope libraries, manipulation of spectrum files and their contents, and graphical display of on-going acquisitions, saved spectra, and mathematical fits to spectral peaks.

This paper presents t he design and implementation (using a TI 9900 microcomputer system) of digital control systems for an environmental chamber utilized in the study of plant growth. Two control systems were implemented - one to control dry-bulb temperature and the o ther to control the carbon dioxide content in the chamber atmosphere. In addition, real-time data acquisition, automatic restart following power outages, and an interactive operating system have been achieved. The CO system is a closed-loop modified proportional control system. The closed-loop temperature control system uti1 ized a proportional-plusintegral-plus-de rivative digital controller. The environmental chamber is presently used in research by the USDA at Auburn University. 2

BESSY is a 800 MeV electron-storage ring dedicated to research with synchrotron radiation in the VUV and soft X-ray region. The storage ring is fed by a 800 MeV separated function synchrotron with a clasical 20 MeV microtron as preinjector. The machines are remotely controlled by four minicomputers which are linked by a local network. The computers are connected to a commercially available electronic interface system. The general philosophy for the system design was determined by boundary conditions such as reliable processor hardware, reliable and powerful multi-user multi-programming real-time operating systems, well developed software tools, a ready-to-use distributed network with high throughput, compatibility of the electronic interface system, locally available service shops, and, if possible, the avoidance of assembly coding. This paper describes in detail the system which ultimately met these criteria and was subsequently implemented at BESSY.

This report documents acceptance test results for the 242-A Evaporator distributive control system upgrade to D/3 version 9.0-2 for year 2000 compliance. This report documents the test results obtained by acceptance testing as directed by procedure HNF-2695. This verification procedure will document the initial testing and evaluation of the potential 242-A Distributed Control System (DCS) operating difficulties across the year 2000 boundary and the calendar adjustments needed for the leap year. Baseline system performance data will be recorded using current, as-is operating system software. Data will also be collected for operating system software that has been modified to correct year 2000 problems. This verification procedure is intended to be generic such that it may be performed on any D/3{trademark} (GSE Process Solutions, Inc.) distributed control system that runs with the VMSTM (Digital Equipment Corporation) operating system. This test may be run on simulation or production systems depending upon facility status. On production systems, DCS outages will occur nine times throughout performance of the test. These outages are expected to last about 10 minutes each.

Within the last 5 to 10 years, health care has seen a plethora of "breakthrough" technologies--client/server computing, multitasking, multi-user operating systems, E-mail, CD-ROM data storage, the Internet, etc. Now, a newer technology is coming of age. This point-of-care technology uses radio-based systems to transmit signals through the air without physical connections.

Many microprocessor teaching and development laboratories make use of a multiuser computer system for program development, and the object code is down-line loaded into the microprocessor for testing. The program development cycle of edit-compile-load can be fairly lengthy on a heavily loaded central system and it would be more desirable to use a commercially available operating system running on the microprocessor to perform program development. The operating systems will require a disc, and it may be undesirable or just too expensive to add a disc system to each microprocessor, or it may be that the central multiuser system provides other services such as printer spooling, electronic mailing and file back-up. The paper discusses an alternative method to using discs on every microprocessor, whereby the multiuser system acts as a file server to the microprocessors, thus requiring no extra cost to enhance the microprocessors to run a local operating system

R1 is a rule-based program that configures VAX-11 computer systems. Given a customer's purchase order, it determines what, if any, substitutions and additions have to be made to the order to make it consistent and complete and produces a number of diagrams showing the spatial and logical relationships among the 90 or so components that typically constitute a system. The program has been used on a regular basis by Digital Equipment Corporation's manufacturing organization since January of 1980. R1 has sufficient knowledge of the configuration domain and of the percliarities of the various configuration constraints that at each step in the configuration process, it simply recognizes what to do; thus it requires little search in order to configure a computer system.

Businesses undergoing reengineering efforts must rely on analytical data and management insight to design and implement processes that most effectively address market needs. These design efforts require endorsement and support by the most senior management and require a fundamentally different approach to market success than past business models and information would dictate. Therefore, competitive and externally‐generated analysis is key to understanding the opportunities, risks, and potential investment profiles that will move a changing organization toward competitive advantage in dynamic markets. This article references a reengineering design process successfully implemented within Digital Equipment Corporation's Computer Systems Division in 1994–1995. In moving from a functional to a product‐oriented business model, Digital employed competitive intelligence (CI) to analyze and evaluate new organizational designs and business process systems by defined market segments and competitors, and by projecting accepted economic principles. CI research efforts included information on competitive positions, potential shifts in product line positioning, tradeoff scenarios from one system type to another, pro forma investment, and market share analyses. © 1997 John Wiley & Sons, Inc.

The Minimum Security Requirements for Multi-User Operating Systems (MSR) document provides basic commercial computer system security requirements applicable to both government and commercial organizations. These requirements include technical measures that can be incorporated into multi-user, remote-access, resource-sharing, and information-sharing computer systems. The MSR document was written from the prospective of protecting the confidentiality and integrity of an organization's resources and promoting the continual availability of these resources. The MSR presented in this document form the basis for the commercially oriented protection profiles in Volume II of the draft Federal Criteria for Information Technology Security document (known as the Federal Criteria). The Federal Criteria is currently a draft and supersedes this document.

UNIX is a general-purpose, multi-user, interactive operating system for the Digital Equipment Corporation PDP-1 1/40 and 11/45 computers. It offers a number of features seldom found even in larger operating systems, including 1. A hierarchical file system incorporating demountable volumes, 2. Compatible file, device, and inter-process I/O, 3. The ability to initiate asynchronous processes, 4. System command language selectable on a per-user basis, 5. Over 100 subsystems including a dozen languages. This paper discusses the usage and implementation of the file system and of the user command interface.