Digital Equipment

Networkiag provides easy access to software worldwide. NSENet (National Science Eoundation network), Ethernet (Xerox Corp.), ProNet (Proteon, Inc.), and DECnet (Digital Equipment Corp.) are among the most notable networks (12). 

Lower current-rate portable computers and other portable digital equipment... 

The labor-intensive nature of polymer tensile and flexure tests makes them logical candidates for automation. We have developed a fully automated instrument for performing these tests on rigid materials. The instrument is comprised of an Instron universal tester, a Zymark laboratory robot, a Digital Equipment Corporation minicomputer, and custom-made accessories to manipulate the specimens and measure their dimensions automatically. Our system allows us to determine the tensile or flexural properties of over one hundred specimens without human intervention, and it has significantly improved the productivity of our laboratory. This paper describes the structure and performance of our system, and it compares the relative costs of manual versus automated testing. 

Several exciting technical advances fostered the improved environment for computer use at pharmaceutical companies in the 1980s. The first was a development of the VAX 11/780 computer by Digital Equipment Corporation (DEC) in 1979. The machine was departmental size, that is, the price, dimen-... 

The equipment consisted of two Waters (Waters Corp. Milford, MA) M-45 pumps, a Waters 481 UV detector, a six-port Valeo sampling valve (A2L6P) with 0.08" holes in the valve body and rotor, a Rheodyne Model 7413 injection valve with a 1-pl loop, a valve interface box, and a Digital Equipment LSI-11/23-based microcomputer system. The microcomputer was used to control all valves, collect raw data from the UV detector, integrate the chromatogram, and store and plot results. 

The equipment used in this application included two Waters M-45 pumps, a Waters 481 UV detector with microbore cell, an air-actuated Rheodyne 7413 injection valve with a 1-pl injection loop, an air-actuated Valeo four-port sampling valve (A2CI4UW2) with no groove in the injection entry ports, an air-actuated Valeo three-port switching valve (AC3W), and a Digital Equipment LSI-11/23 microcomputer. The LC system was located in a purged cabinet suitable for use in Class I, division 2 areas. The cabinet was in a heated room about 40 feet from the reactor column. The two Valeo valves were mounted next to the reactor column, while the microcomputer was located in the control room. 

In both instances Bos employed a Digital Equipment Corporation PDP 11 computer on-line with a Radiometer polarographic stand with drop-life timer, a three-electrode system (DME, reference and Hg pool), two A/D and three D/A converters, together with a DEC writer and a recorder. For the "computer polarograph he used a Radiometer P04 polarograph and an external clock, and the computer had to perform the following functions ... 

This work was partially supported by an International Research Scholarship from the Howard Hughes Medical Institute (to G.B.) and by a collaborative research grant from Pfizer Central Research (to G.B.). Digital Equipment Corporation generously loaned the Alpha workstations used for the calculations. Riccardo Destro kindly made the l-alanine diffraction data available to us. Thanks are also due to Mark Spackman, Carlo Gatti and Eric de La Fortelle for useful discussions. 

The authors wish to thank Digital Equipment Corporation for financial support for this work and Dr. Collins Conley for his technical assistance. 

DATATRIEVE Is a trademark and product of Digital Equipment Corporation. 

The path taken when the search is started at k. = 0.5/min and k.sO.5 4/mol/min is shown in Figure 3. This search begins on a steeper slope and the function, in this case, spirals in on the minimum value. Again the correct values of k. s 1.0/min and k = 1.0 ,/mol/min are found. Total computer time for this analysis averaged 3-5 minutes with a Digital Equipment Corporation PDP-11/44 minicomputer. 

Elllpsometry. The automated ellipsometer is essentially equivalent to that described by Hauge and Dill ( 9). Data acquisition and analysis was made through the use of a Digital Equipment Corporation MINC 11/23 computing system. The detailed description of the system was reported previously ( 8). The measured ellipsometric angles and 4 are converted into the... 

Figure 3 is the plotted low resolution mass spectrum of halcinonide found using an AEI Scientific Apparatus Ltd, Model 902 mass spectrometer. Spectra were collected on frequency modulated analog tape and processed on a Digital Equipment Corp., PDP-11. 

Amtzen B, Brown G, Harrison T, Trafton L (1995) Global Supply Chain Management at Digital Equipment Corporation. Interfaces 25 (1) 69-93 Asche F, Gjolberg O, Volker T (2003) Price relationships in the petroleum market an analysis of crude oil and refined product prices. Energy Economics 25 (3) 289-301... 

Figure 3 provides a sample session with MR3LJOQ ESP. The controlling code is written in Prolog, while numerically oriented, analytical procedures for classification are written in Fortran-77, xhe system has been written to run under Data General s ADS/VS operating system (MV series computers) but it is expected to be easily ported to the Digital Equipment VAX VMS environment. 

Digital Equipment Corporation (Maynard, MA), Laboratory Subroutine Manual //AA-C984A-7. 

II III were not published at the time of writing this Section 25) Anon, "Computers Analytical Role Extended , C EN, March 18, 1968, pp 44, 48, 52 54 [At the exhibit of the "1968 Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy , held in Cleveland, Ohio (See C EN, March 11, 1968, plO) were shown the computers of DEC (Digital Equipment Corp) and of IBM (International Business Machine Corporation). The DEC exhibited "Gas Chrom-8 Computer system for gas chromatography and IBM-Model 1800 and 1130. There were also exhibited other systems, among them smaller inexpensive computers. There were also shown slides on results of work with computers done by S. Sasaki H. Abe of Japan s Tohoku University and by T. Kato of Japan Electron Optics Laboratory Co, Ltd 26) Jack Alster, Picatinny Arsenal private communication,... 

Numerical analysis is important in digital-computer work from another viewpoint. Sometimes it is necessary to express complex functional relationships in a simpler form. Occasionally relationships may be given in a graphical or tabular form not directly suitable for processing on digital equipment. In these situations numerical methods for curve fitting and interpolation are techniques which will necessarily be employed. 

All work reported in this paper has been performed on a Bruker 200D ESR Spectrometer interfaced with a Digital Equipment PDP11/34 computer with an AK/11 A/D converter. ESR studies using these facilities can provide information on a) Concentration of total radical species... 

Though unstable, the computer industry grew rapidly during the 1960s, and the final piece of the computer development puzzle, time-sharing, came about late in the decade. Efforts to develop and commercialize time-shared computers were led by General Electric s computer department, which was quickly overtaken by IBM, UNIVAC, and Digital Equipment Corp. 

Arntzen BC, Brown GG, Harrison TP, Trafton LL (1995) Global Supply Chain Management at Digital Equipment Corporation. Interfaces 25 69-93... 

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