DIGITAL COMPUTER 0 YWEWSLL77TERTE ta OFFICE OF NAVAL 14Vol h Nit KStARCN _MATHEMATICAL SC9MCIS DIVISION JOlY 104 1 3 UNlVAit I % lho 3WAtClo 1b6 11 himho 11ough 't 'rho LbsitKidje A kiIUIot iiak at rh NAMtCC 10 101m ot Comp Iute t ORC ItAt- KC M tilt Univrst 10 of Iliss i ompuo 0IJ I IAL Naval Proving Irouriti C aculatora i i'rh Inmwitutt or Advancod Study Goempiuto r 14 Tho Logistit Couniliutito I% AVIK1KItDN P'ROVINGI OK OUNI COMPUTERIS The ORDIVAC 'I'Iw ICDVAC 'rho P NIAC 16 Whirlwind I L RA I 10i 17 18t Hughes Airborneo Coinpipter 19ý Elliott- NR J C Computer 401 Mk I 10 NICHOLAS 14J I DATA PROCESSING AND CONVES I ON EQUIPMENT Solid Avoustic Delay Line Memory Unit Telereader Character Display Signal Generator Model IC I - 184 Contact 3 D i C LLr OF COMPUTING SERVICES 10 1 R e i ng o n R nd n c U N IV AC T ra in in g C ou rse s I 3LTLj C 1 Computer Symposiumn Z Joint Computer Conference 3 DCN News Item Approved by The Under Secretary of The Na 27 August 1951 ______________ fth umieit Erm Kena a-ppj t i1 10 pa k rokan chdsle DI CLIhiME O C TIS OCUMEN U IS BEST QUALT Y AVAILABLE TIE COPY FJRNISHED TO DTIC CONTAINED A SIGNIFICANT NUMBER OF NOT DO YMiCE ES C REPRODUCED FROM BEST AVAILABLE COPY THIS DoCUMENT CONTAINED BLANK PAGES THAT HAVE BEEN DELETED V141IVAC riv c'ompiots UNivAC sysTitm have twen delIvored and pro now lit regulor oporation Tho mstot recent delivery Well lto thP Atomlit Knerty Canrnloolon at Now York University New York IINIVAt' SYBTEM Ihas boon purillsood by the 11ureau of Shipp U 8 Navy and has pee t Its ael'00anc0 loett$ In Philadelphia It Weis shipped to the D avid Taylor Modeli Basin and Is now einghInotallod ithere UNlIVAC syTMm VII to substantially through final testing lit Philadelphia While IINIVAC' OYWItM Vill I n lit t final teat otage lEarlier thin year the Cenoun I'ureau etimputer UNIVAC 8YXTEM I wine ahipped to Washington 1 C after' being oporated lin Philadelphia by the Census IBureaa sitghtly under tiwt years The perforanioev figures itvea' tho post three yearn indicate the averalle usability of approximastely d80 of a lOS-hour week with l10% rolgular sechodold ainaltenance time and a reliable niaxinium of 14 nt ioi-chedulod stakintoonanve timeo Thin figure wall achieved prinvipally tin thu Philaielpita plant anid somo Mlight decreaseo tit total usability may occur lit the field The figlure however should never fall below ItL4 of a 168-hour week aned with excellent maintenance van approach 90%L C'-itoidormblo research in being foecusod on furthor timprovomotit in inpuit-outputt control equipment and lin the developinent ofl additional auxiliary equipment MOORE SCHOOL AUTOMATIC COMPUTER MSAC During the past quiarter considerable effort has been directed toward engineering the physical details of the MSAC including the power -dist ribut ion system the cable lnterconnections and the grounding system A detailed not of notes describing the logic of the machine has been met up All pulse transformers except those for the memory units were completed The assembly alid measurement of the plug-in electrical delay line untits was begun Chassis production for the inain body of the MSAC continues with 72 chassis out of the required 159 completed THE SWAC During the past quarter a magnetic drum memory of 4096 words was put into operation as an Integral part of the SWAC Information is stored serially on the drum on 1 28 distinct channels with 32 words per channel Transfers to and from the drum are most efficiently handled in blocks of 32 words which is just the number of words on any one track A word hi position P on track T on the drum is transferred into address A P in the high-speed electrostatic storage tube memory where A and T are specified In the transfer command This makes it possible to begin the transfer with the first number that becomes available and to know that the transfer persists for precisely one revolution time of the drum The drum rotates at 3600 rpm so 32 words are transferred in approximately 17 000 microseconds Since there is no wait-time the access time per word on the drum when handled in blocks of 32 words is about five hundred microseconds ------- - TheSWAC was during the past quarter in operation for 875 4 hours working on thirty otprotblems f particular numerical interest has been the determination of the full J 11elge nvil js'Ud elgenvectors of a 45th-order symmetric matrix Experiments have So- ue4 in ipticat ioni of the conjugate gradient method to systems of Linear equations i4e ds of 1 act coding were developed and special multi-precision subroutines have beenl Pkcdto the Library rP 2-2 a Itki tottoUltlS 1 Al4 ItATORtY 'OMPIITFIt A coniputer saantially sminilar to tho Blurroughs loabotratory Computer Is undor con struothiii for Wayne tlnivormily Dorirng thoemipstructimi period he staff of the Wayne Universuify Computation lAboretory Is using the cotmputer In Owe Burroughs I laoratory on a 2t -luur per -woek schedule on Mohir vomputatstion problems In addition it the Wayne University work the computer in boing used about 25 houira lpr cusntomers and 15 hours per week on Burroughs computation o week on problems Iou'Otoide P1 441111111 otalltontenso and enginee ring improvomentsi Rocent computat ions Inc lude turboengine doasign and performianve strosseuo in pipe ' data reduotion antenna calculations and cam design C'ONOOI4ATSJ NLKCTRONIC l I0fTAL COMPUTVR MODSIL 30-201 The broadhoarit tif the control the arithmotic and the moinory circuitse have now b n coupled and the integrated computer Is under tost Work is proceeding on developing and running test routines unecikinit subroutines and solving problems including generation if prime numbers manss-spectrometer analysisi partial differential equations etc The prototype packaged computer is still under construction and current estimates indicate completion in late summer In the meantime the breadboard systemk in being used for various application problems The remote-control console Incorporating the photo-electric reader output punch and format control which will form part of the prototype is being used with the breadboard Development is proceeding on IBM punched-card Input-output MONNOBOTELECTRONIC CALCULATOR The MONROBOT built by the MONROBOT Corpo ration Morris Plains New ersey a subsidiary of the Monroe Calculating Machine Company In a compact ruggedined generalpurpose decimal computer of moderate price The number length of twenty decimal digits with centrally located decimal point largely eliminates the need for scaling or setting of decimal point Neither overflow nor translation techniques are considered necessary Average office personnel are said to become familiar with MONRODOT operation the first day It print out results on 8-1 3-inch wide paper roll or perforates a paper tape as desired MONROBOT V is complete in one desk-size unit ready to plug in and perform MONROBOT can be supplied with storage capacities to suit special requirements THlE OAK RIDGE AUTOMATIC COMPUTER ORACLE The ORACLE Oak Ridge Automatic Comiputer Logical Engine is a general purpose digital computer jointly designed and constructed by the staffs of Argonne National Laboratory Lemont Ill and Oak Ridge National Laboratory Oak Ridge Tennessee at ANL r use at ORNL Construction is under the supervision of Jr C Chu and was begun in November 1951 The ORACLE Is a parallel asynchronous machine operating in the binary number system utilizing a fixed binary point The principle engineering characteristics of the machbie are as follows Register Capacity Allowed Adder Carry Time Allowed Time Per Shift Multiplication Time 40 bits 5 microseconds 6 microseconds 240-440 microseconds Depending upon number of 11s in the muliiplier -3- 440 microseconds DIlvislott time 9 bit command code 11 bit address Number Word $is@ Other Word Sis Memory Type Maximum Memory Capacity Memory Minor Cvile Maximum Access Time Major Memory Uycle Mods 1024 Mode 2048 Number of Vacuum Tubes 40 bits 20 bits Williams 2048 words 'f III Ic 20 48 milliseconds 40 96 scConds 3500 There are two operating modes available in the ORACLE memory system In either case dot-dash display is used The dot is used to regenerate a zero and dot--dash in used to regenerate one Mode I In the 1024-word mode in which time multiplex in used between a pair of Williamp Abes to determine the stored information for each bit In this arrangenwint wheo either tube reads a 1P signal a a1 is replenished to both This method overcornea the most common type of screen blemish which would prevent storage of a I dot-dash Mode I is the 2048-word mode in which each tube stores 1024 words The first tube Is regenerated In the first halt of a major cycle and the second tube in the second half of the major eycle Teletype equipment is used for the input-output media The general code and logical structureare similar to that of the Institute for Advanced Study computer At present the ORACLE is undergoing the final engineering teat at Argonne The maximum repeated consulting number of the memory commonly called read-around is about 200 The ORACLE will be installed at Oak Ridge earl7 this fall to be used by the ORNL mathematical panel under the direction of A S Householder Four magnetic tape auxiliary memory tnits are under design and construction at Argonne The two inch wide tape contains 42 parallel channels of which two are used for control purposes A 42 channel recording head 2 Inches wide is used The packing density is 100 bits per inch per channel The start stop time Is about 1 5 milliseconds This auxiliary memory unit however will not be installed with the ORACLE until late fall of 1953 THE NAREC The Naval Research Laboratory's high-speed electronic digital computer NAREC has recently been placed on a daily operation schedule of eight hours useful computation plus four hours for engineering checks and maintenance At present the computer is operating with a magnetic-drum memory and with Flexowriters being used for both input and output Electrostatic memory units for 1024 words v being checked separately prior to being added to the computer system Magnetic-tape input and output equipment is also under external test It is planned that the complete system with electrostatic memory and magnetic tape inputotittput should be in operation later this year THE ELECOM COMPUTERS The Electronic Computer Division Underwood Corporation moved on 28 May 1953 to new and larger quarters at 35-10 36th Avenue Long Island City 6 New York New York ELECOM 100 The second Elecom 100 was delivered to Reeves Instrument Corporation at the end of March 1953 for the use of the Navy's Project Cyclone It was recently used in the solution of a problem involving a system of 14 linear differential equations The time required was over 60 hours during which no computer errors occurred this included error-free operation -4 - •f the magnetic tape for considerably more than 20 000 blocks Additional Elecom 100 computers are now in process of manufacture ELECOM 120 Engineering design of the Elecom 120 which is a moderately priced decimal computer with a 1000 word magnetic drum memory was completed and the first 5 machines are now in production ELECOM 200 The Elecom 200 a large-scale decimal computer having a magnetic drum memory of 10 000 word capacity is to be used at the Pentagon by the Office of the Chief of Ordnance for logistics problems It has been undergoing engineering test and the majority of the internaL operations including addition subtraction multiplication square rooting and conditional transfer have been completely checked out The company now has a staff of mathematicians and programmers and will soon be prepai Ad to provide computing and programming services An Elecom 100 will be available initially for this service and will be supplemented later by an Elecom 120 Training of both programmers and maintenance personnel can also be provided UNIVERSITY OF ILLINOIS COMPUTER ILLIAC The University of Illinois Digital Computer ILLIAC is regularly used for problems arising in university research The machine is scheduled for engineering and maintenance including improvements for 4-1 2 hours per day and for problem solving 11-1 2 hours per day Out of the 11-1 2 hour period the machine requires attention about 1-1 2 hours thereby providing about 10 computing hours per day A recent improvement in the Williams memory makes it possible to guarantee a readaround ratio of 80 AIR FORCE MISSILE TEST CENTER COMPUTER FLAC System testing of the FLAC see the Digital Computer Newsletter for April 1953 began in late January 1953 The computer proper is now operational with the internal memory and either punched paper tape or magnetic wire input-output equipment The magnetic tapes and their circuitry in addition to the perfcrated-tape-to-magnetic-tape and magnetic-tape-toperforated-tape conversion units remain to be tested NAVAL PROVING GROUND CALCULATORS During the past three months the Aiken Relay Calculator Mark 11 has continued to operate on a 24-hour per day schedule The Mark Il Calculator has operated on the same schedule however the entire month of March was spent in inE'alling improvements to the Calculator The operating efficiency of the Mark II continues above 85 percent for the month oL May the Mark II had an efficiency of 90 percent which is the most successful record for any similar period The Mark III efficiency for the past three months of productive operation averaged 62 percent The Computer Research and Development Group installed a new checked-sequencing system in the Mark III Calculator which permits more rapid changing of problems The new system not only loads the program storage drum five time's faster than was possible under the -5 - old system but also includes complete checking of the program storing process and a omodulo 2 bit-count check on every program word used during computation Furthermore in order to detect wrong program transfers during computation a circuit is provided which makes a modulo 2 bit-count check on that part of the transfer code which represents the address of the program word to which the transfer is to be made The address of the word actually obtained also undergoes such a bit-count and if the two bit-counts do not agree the machine stops with the wrong call' alarm light on In addition to the heavy program of urgent ballistic computation performed on both Calculators during the past quarter a research problem involving computations by the method of characteristics of supersonic flow past ogival missiles is now being solved on the Mark IMl Calculator THE INSTITUTE FOR ADVANCED STUDY COMPUTER For the period March 1953 to May 1953 the LAS machine has been in operation a total of 1360 hours Of this time 1122 hours were available for computation and the machine in fact operated 918 of these hours Thus it was in operation approximately 82% of the available time During this period a large variety of problems were solved including a number of meteorological forecasts a variety of hydro-dynamical calculations a mathematical approach to biology some problems in physical chemistry and a variety of other calculations A magnetic drum of 2000-word capacity has been completed and attached to the machine This drum Is an 80-channel unit the first half of which has been placed in operation THE LOGISTICS COMPUTER Construction of the ONR Logistics Computer described in the July 1952 issue of the Digital Computer Newsletter has been completed This special purpose computer was installed at George Washington University in February 1953 by Engineering Research Associates Inc of St Paul Minnesota It is currently being operated as a research instrument by the George Washington University Logistics Research Project for the Office of Naval Resaarch In addition to the computer magnetic tape input and output equipment was delivered in May 1953 The magnetic input is capable of handling 300 characters per second on high speed and 150 characters per second on low speed while the magnetic output operates up to 600 characters per second In connection with the magnetic input-output equipment a unit was received which is capable of converting magnetic tape information to paper tape information or to electric typewriter printout Equipment is also available for conversion of IBM cards to paper tape ABERDEEN PROVING GROUND COMPUTERS THE ORDVAC Recent efforts to improve the effective read around ratio of the ORDVAC's electrostatic memory are expected to lead to a ratio beyond 100 These efforts include procurement of a full complement of RCA cathode ray memory tubes of a new design and incorporation of a new memory pulsing system developed by the University of Illinois for use on the ILLIAC Machine availability since 1 January 1953 has averaged 123 hours per week THE EDVAC Many circuit changes have recently been completed to improve machine reliability and a teletype page printer has been added to the machine output Excluding a 6-week period in which the machine was shut down to incorporate modifications to permit later use of a magnetic-drum -6 - memory and additional input-output equipment the EDVAC has been available for productive operation for an average of 78 hours per week since 1 January 1953 THE ENIAC A new word shifting device was designed constructed and recently placed in service This unit reduces the time required for a shift order multiplication by a positive or negative power of 10 to less than one third of the time previously taken The ENIAC hab shown an average available machine time since 1 January 1953 of 114 hours per week WHIRLWIND I The Whirlwind I computer continues to be used for scientific and engineering problems for about 30 hours per week A total of 115 such programs were run during the period March I June 1 1953 Most of these were parts of long-range problems introduced during the previous quarter Testing of the auxiliary-magnetic-drum discussed in previous issues of the Newsletter is complete and the unit is available for use by the programmers The read-in program is now stored on the magnetic drum and is read into electrostatic storage when read-in is requested Reliability studies of the drum system will continue during the summer The Scientific and Engineering Computation Group are determining suitable means of incorporating the magnetic drum into a conversion scheme designed to eliminate to a large extent the logical distinction between storage on the drum and storage in the computer's electrostatic storage system Suitable post-mortem and mistake-diagnosis programs will be considered an integral part of this system Installation of the second bank of tubes in electrostatic storage has been completed and the system is operating reliably Extensive use has been made of delayed printing using magnetic tape Data from the computer is stored rapidly on the tape and at a convenient time later is printed at a slower speed without interfering with computer operation Photographs are being taken of scope displays so that larger amounts of data can be read out and analyzed Operation of the camera is controlled by the computer program ERA 1103 The ERA 1103 Is a general-purpose digital computer for applications requiring large storage capacity and programming versatility All internal operations are in the binary system the basic word size being 36 bits The instruction code is a two address system utilizing a 6-bit command and two 1J5-1ait addresses to make up a single order word The four classes of storage which are individually addressed include 16 384 words of magnetic drum storage 1024 words of electrostatic storage and the Quotient-Multiplier Register and Accumulator The accumulator is double length for formation of products Four magnetic tape units are provided for supplementary storage Information is transferred to and from these tapes in blocks Negative numbers are denoted in the One's Complement system and the radix poliL is considered fixed at the low order end of the word A wide option of terminal equipment may be obtained including basically a photoelectric tape reader a directly connected typewriter and a high-speed tape punch Optional equipment may include punched card equipment on line teletype communication circuits and a variety of analogue equipment HUGHES AIRBORNIE CONTROL COMPUTER This computer is a very compact digital computer developed for use in an airborne control system The computer operates on 17-bit words si n bit plus 16-bit number The order -7- code includes all arithmetic operations plus transfer operations and some lo'gical tions The memory contains 2500 words on a magnetic drum All operations wit puter take place in the ser al mode Statif circuitry of the flip-flop type is used ad circuits are placed on plug-in packages Extensive use has been made of sub-mini printed circuits and other miniaturization techniques An analogue-to-digital convcit c ie vides the inputs required for the machine In a similar manner the output of the computer is converted to analogue quantities r use in control ELLIOTT-N R D C COMPUTER 401 Mk 1 The Elliott-N R D C Computer 401 Mk I was constructed by Elliott Brothers Ltd In their Research Laboratories at Boreham Wood England for the National Development Research Corporation London England The 401 Mk I was demonstrated at the Physical Society Exhibition in London in April 1953 Less than one year was required to develop and complete this computer which was planned as a complete small size machine which would be useful in its own right while providing an opportunity to test the design and packaging techniques The 401 Mk I operates in the serial mode upon 32 digit binary numbers at arbric bit handling rate of 333 kc s The arithmetic unit contains information in single word length magnetostrictive delay lines Two such registers compromise the accumulator four more are used as multiplier multiplicand instruction and general-purpose registers The numbers handled by the machine range from 1-2-s' to 2 ' -1 with a fixed binary point The thirtysecond bit of each number is a sign bit An order word contains a ten-bit address for the operand of the order four three-bit order digit groups and a ten-bit address of the next order These order digit groups act as partial command codes and the sequence of all four make up the complete command In a sense this shifts some of the sub-command complexity from the control unit of the machine to the programmer The internal memory is a magnetic disc 9 inches in diameter containing 8 tracks on the lateral surface each track contains 128 32-bit words The disc rotates at 4600 rpm with a rotation period of 13 1 milliseconds and a bit-rate of 333 kc s Electronic switching is used for track selection Fifteen more tracks may be utilized if desired a relay switching operation being utilized to select which one nf 16 tracks is used as the eighth of the electronically selected tracks Input is provided by a photo-electrically sensed 5-level paper tape reader operating at 40 frames per second The output is an electric typewriter operating at 10 characters per second Addition and subtraction may be performed in 200 microseconds exclusive of access Multiplication requires from 7 to 10 milliseconds depending upon sign Average access time is 6-1 2 milliseconds The two-address system is however conveniently suited to optimum or minimum access programming and some time can be saved through the exercise of care on the part of the programmer Packaged plug-in units see Fig 2 and miniature tubes have been used in the 401 Mk I and reliability and ease of maintenance were prime considerations in the construction One section of the cabinet contains a cooling fan for air circulation throughout the machine The main cabinet is13' long by 2' deep and 7-1 2' high A mobile maintenance cart and a cart containing the input-output equipment are each about 2-1 2' by 3' by 4' see Fig 1 The main cabinet weighs 2200 lbs The 401 Mk I contains about 500 tubes and requires 5 kva of power NICHOLAS In addition to the ELLIOTT-N R D C Computer 401 Mk 1 Elliott Brothers Ltd have completed Nicholas a Nickel-Delay-Line-Storage computer The internal memory of the machine consists of 64 nickel magnetostriction delay lines each containing sixteen 32-bit words Bit circulation occurs at approximately a 50 kc rate In addition five word-length lines are used for the arithmetic and control registers The average access time to the 8- N R D C COMPUTER 401 MK 1 ELLIOTT r- ' r i lof%4 Figure I if - View of complete machine with maintenance and input-output equipment carts '-- h - - T -77 • i Figure 2 - View of plug-in packages Package holder is normally permanently mounted storage is 6-1 4 milliseconds and the average computing speed is said to be approximately 100 operations per second The 32-bit words may either be a number or contain two 16-bit orders Ea h order has a 6-bit command code and a 10-bit address Input is 5-level punched paper tape and output-is either 5-level punched tape or typewritten page copy This machine has been operating since January 1953 A computing and programming if desired service is currently available DATA PROCESSING AND CONVERSION EQUIPMENT Solid Acoustic Delay Line Memory Unit The Computer Control Corporation 106 Concord Avenue Belmont 78 Massachusetts has announced a Solid Acoustic Delay Line Memory Unit - Model 3CI-384 This 5 tube unit contains a solid quartz delay line manufactured by R D Brew and Company of Belmont Massachusetts and is a complete unit for the recirculation of 384 pulses at a 1 megacycle pulse repetition rate The carrier frequency used is 20 megacycles The Computer Control Corporation is also prepared to undertake other applications of solid acoustic delay lines Contact Telereader Telecomputing Corporation 133 East Santa Anita Avenue Burbank California ha s announced the Contact Telereader a device for recording digital information from graphical records This device tracks a curve under manual control and information may be recorded from calibrated indicators and recorded manually or may be read out electronically into a Teledalcer See DCN for April 1953 and converted to digital information electrically A series of Program Units are available for recording the Teleducer outputs in a flexible manner in page copy perforated-tape or punched cards Character Display Signal Generator Wang Laboratories 296 Columbus Avenue Boston 16 Massachusetts have announced the Model DS-157 Character Display Signal Generator This genertto- upplles the necessary signals for successively intensifying the dots in a 5 by 7 a -ray to produce a character formed of the appropriate dots A matrix of 35 magnetic cores Is used with a single turn sensing winding threaded through the appropriate cores for cach character As the successive positions In the core matrix are scanned the appropriate dots on the cathode ray screen are intensified where the desired sensing winding is activated A display speed of 10 000 characters per second is possible With this device any desired configuration in a 5 by 7 matrix may be obtained COMPUTER COURSES REMINGTON RAND INC UNIVAC TRAINING COURSES Remington Rand Is now offering a Training Program in Electronic Computing Systems The following courses are held at 315 Fourth Avenue New York IQ New YorkOrientation for Exncutives Introductory Course in Computers Elementary Programming Advanced Programming 4 2 6 6 days wecks weekF weeks Sept 28 1953 Sept 7 1953 1st Mo - Even Months 3rd Moi - Odd Months Sixteen week Technical Engineering Courses for maintenance personnel are offered in Philadelphia Pennsvlvania Inquir es concerning all courses should be lirecled to Remington Rand Inc 1615 L Street N W Washington D C 10 - AVAILABILITY OF DIGITAL COMPUTING SERVICES alnd Addr'pin Mf oolaclt Kry i1 Noi1 it'• llitim an dil th l lo'lhl t h 0' CodiIng ai1d M4l10hn11#tllcl Sor'ivh'014 d T'o Wlhom1 AvalllahlI I Xi 11 ov 'tnit IterIeIrch Awowint ao1 viihm of Romingt on I and nc a W GIor'don Welvhman D irvctoi td Computer Applicatlotm KRA Computation Conter Inineooring ReseaCh Asaociatoe DivlaIoel of iReinglon iland min 555-23rd Slreet 8 Arlington 2 Virginia b KRA I 101 Automatic Computer r Avail ' lo d No rostriction NOTICKS COMPUTER SYMPOSIUM A Symposium on Digital Computers Advanced Engineering Techniques will be hold on 3 4 and 5 August at the Argonne National Laboratory Lemont Illinois under the sponsorship of the Physics Division of the Laboratory The AVIDAC Argonne's high-speed computer and the ORACLE the Oak Ridge high-speed computer as well as other laboratory equipment will be on display JOINT COMPUTER CONFERENCE The annual joint computer conference sponsored by the Institute of Radio Engineers the American Institute of Electrical Engineers and the Association for Computing Machinery will be held this year in Washington D C at the Hotel Statler 16th and K Streets N W on 8 9 and 10 December 1953 DCN NEWS ITEM The Computer Branch of the Office of Naval Research Washington 25 D C solicits news items for inclusion in the Digital Computer Newsletter Material should be received by 10 March 10 June 10 September or 10 December for publication in the Newsletter of the following months - 11 - E32010