ADVERTISER INDEX fo lnquiry Number MANUFACTURERS A. E 」 . 1 2 Base 2 . 3 Buss c. CP Aids 4 Compuserve 5 Computronics c. 6 Cromemco . 7 Cybernetics c. Data Dynamics TechnoIogy DiabIo Digiac Corp. DigitaI Graphic Systems Discount Software Group Disks, Etc. Ecosoft Electrolab Electronic ControI Tech. Electronic SpeciaIists Electronic Systems Furniture FMG Co 「 p. Fireside Computing (Micro Gnome) GR Electronics . Graham Dorian . Hayden BOOk CO. コ nc. Home Video Heuristics I.O. TechnoIogy lndustrial Micro Systems lnformation Unltd. Software . lnmac lnnovative Software lntegrand lnterface Age Subscriptions Foreign insert between 1 6 , 1 7 lnterface Age Europe lnsert between 1 1 2-1 13 . 1 10 lnterlude lnternational Micro Systems . 27 42 Kybe 99 Leedex 旧 C 3M MT Micro Systems 39 Measurement Systems & Cont 「 0 . . 27 , 43 , 53 , 73 , 127 Micah 34 Micro Ap . 63 Micro AppIications Group 78 Microsette . 20 4 MicroTax . 5 Microtek Midwest Computer Peripherals . 35 Midwest Microtek . 33 MiniMicro ' 80 . 55 Mountain Hardware Novation . 1 1 3 Omega 47 Organic Software fo lnquiry Number Osborne 47 Personal Software 48 Radio Shack 49 Rochester Data 92 SD Systems . 50 Shugart 93 SmaII Business AppIications Sorrento VaIIey Associates Spectrum Software . 52 95 , 96 , 53 Structured Systems Group c. Supersoft 54 55 Sybex TIS Taranto & Associates 56 57 Tarbell. Ultra Violet . 59 University MicrofiIms 60 Vandata . Zemog Scientific Page LO ( 0 一 1 2 「 / ( 0 5 8 CV 7 9 6 1 ー 4 4 0 8 5 1 8 1 0 2 3 3 5 8 2 1 4 6 2 2 4 6 3 5 6 8 5 9 9 1 4 ' 5 1 8 5 4 8 3 8 3 4 8 2 4 0 0 4 9 2 0 0 3 3 5 6 2 1 【 0 4 2 4 5 4 4 3 4 5 ( 0 2 5 7 1 ( 0 u_ O 一わ CO 2 2 8 9 4 2 0 1 6 8 0 1 2 2 3 4 5 6 7 8 9 0 1 つ」 ( 0 4 LO 6 7 8 9 1 一 1 「 / 1 1 1 1 1 1 1 1 ☆つ」☆ 2 2 OJ つ」 2 OJ 2 ☆ COMPUTER STORES/SURPLUS STORES 62 ABM Products 127 American Square Computers 63 1 1 4 64 Apparat 1 23 65 A-vidd Electronics . 1 1 6 Beta Computer Devices . 1 1 7 66 Bits n' Bytes 124 67 CMC Marketing Corp. 9 The CPU Shop 68 122 69 , 94 Computer TextiIe 126 Data Discount Center 83 70 Digital Marketing . 1 1 9 73 Futra CO. . 133 Microage (PGIlnternational) 74 . 1 1 5 Microcomputer Broker 75 Foreign insert between 1 1 2-113 76 Microcomputer Technology . 123 Micromail . . 107 77 78 Micro Management Systems 125 79 Micro Mikes,lnc. 77 80 NRI Schools 31 Netronics 1 1 8 82 Orange Micro . 83 ATV Research . 142 84 CompIete Business Services Corp 1 42 Custom Business Computers 85 . 142 86 DCC Equipment . 142 Merrimack Systems . 142 88 Pacific Exchanges . 142 89 Pan American Electronics . . 142 90 . 142 U. S. Robotics . 8 9 0 2 3 4 2 2 3 3 3 3 ☆ っ ) 4 5 6 冖 0 CD 7 8 0 0 1 2 *Manufacturer requests factory-direct inquiry.

FO 「 your Horizon ー 0 North Star Horizon Computer with 5 " Floppy Disks UpTO Four 8 ' Floppy Disks UpTo Four Hard Disks Printers Display Terminals More power, work, flexibility! JOEDOSTM HDSHARETM North Star Horizon/North Star Hard Disk Timesharing System JOintly Operate Everything Disk Operating System Soon tO be available, a version of JOESHARE with 訓 of the Switch from North Star BAS ℃ tO CP/MTM and back again with features Of JOEDOS using the North Star hard disk. a simple command. Floating point and standard 8 , 10 , 12 , and 14 digit precisions of North Star BAS ℃ , as well as HDSHARE allows multiple users to access as many as four Digital Resea ℃ h's CP/M all on the same hard disk unit. 18 megabyte North Star hard disk units, simultaneously oper- ating programs in North Star BAS ℃ or through CP/M. Designed tO operate with the DISCUS M26TM 26.5 megabyte HDSHARE—・ Micro Mike's North Star Horizon timesharing/ (formatted) Winchester-technology hard disk unit and North North Star hard disk operating system. Requires North Star Star's Micro Disk System, JOEDOS brings yoularge main- Horizon and North Star hard disk system for operation. frame performance at microcomputer cost and reliability. lncludes CP/M. CP/M disk activity is amazingly quick through JOEDOS; ac- cess tO North Star BAS ℃ programs and files is unbelievable! $ 995 HDSHARE and manual Speed and enormous storage capacity ()s much as 106 megabytes) are only the beginning. Through JOEDOS, each 5.2SHARETM hard disk unit may appear tO be one drive 0 「 many different North Star Horizon/FIoppy Disk Timesharing System 'drives" ()s many as 147 double density 180K North Star Micro Mike's floppy disk timesharing system has some new 5 ″ drive-size segments). As many as seven Of these seg- enhancements. 5.2SHARE now supports 8 , 10 , 12 , and 14 mented "drives" may be addressed at any particular time. digit floating point and standard North Star BAS ℃ with as Segment size, file Size and directory Size are variable many as four DISCUS 8 ″ drives, operating in conjunction with according tO user's requirements. Maximum file Size iS 16 the Horizon's 5 ″ drives tO provide in excess of 5 megabytes megabytes, while the maximum directory size for each seg- Of external storage. ment is 8 , 160 entries. 5.2SHARE—Micro Mike's interrupt-driven, bank switching JOEDOS— Micro Mike's hard disk operating system. timesharing fO 「 the North Star Horizon computer.lncludes 8 ″ Requires DISCUS M26 hard disk unit and controller and drive software interface. FO 「 double density or quad capacity North Star Micro Disk System fo 「 operation.lncludes CP/M. systems only. JOEDOS $ 495 5.2SHARE and manual JOESHARETM DOSCHG ー Micro Mike's 8 ″ drive interface to North Star DOS North Star HorizonTM/DISCUS Hard Disk Timesharing System and BAS ℃ . 日 equires North Star Micro Disk System and Micro Mike's popular interrupt-driven, bank switching time- DISCUS 8 ″ drives and controller fo 「 operation. sharing fO 「 North Star Horizon computer is now availaöle with $ 150 DOSCHG and manual 訓 the features of JOEDOS hard disk operating system. JOESHARE allows multiple users to access as many as four 26.5 megabyte hard disk units, simultaneously operating p 「 0- Program operation manuals are available fO 「 preview before grams in North Star Basic or through CP/M. software purchase. JOESHARE—Micro Mike's North Star Horizon timesharing/ Program Operation Manuals fO 「 each program DISCUS hard disk operating system. Requires North Star Horizon and DISCUS M26 hard disk unit fO 「 operation. Programs are available in double density/quad capacity lncludes CP/M. format on レ Prices are subject tO change without notice. Contact your North Star dealer 0 「 Micro Mike's JOESHARE and manual $ 395 $ 25 $ 995 JOEDOS, JOESHARE, HDSHARE and 5.2SHARE are registered tradema 「 ks of Micro Mike'S,Incorporated Horizon iS a registered trademark Of North Star Computers,Inc. DISCUS and M26 are registered trademarks of Mo 「「 ow Designs,lnc. CP/M is a registered trademark of Digital Resea 「 ch,lnc. OCTOBER 1980 Micro Mike's,lnc. 85 South Buchanan Amarillo, Texas 79101 USA Telephone: 8 / 372-3633 making ね c わ no gy uncomplicated... ′ 0 「 People INTERFACE AGE / / CIRCLE INQUIRY NO. 79

Hard and .. Bu 慊 Storage from lndustrial Micro Systems T H [ N EW MO D [ [ 16 The new lndustrial Micro Systems ModeI 16 HardDisk Subsystem is a i'fixed-removable" high speed, bulk storage device providing from 32 megabytes ( 32 million characters) tO 96 megabytes Of on-line storage for the lndustrial Micro Systems 8000 0 「 Series 500 ( ) microcomputer systems. The M0del 16 includes a credenza enclosure that provides a quiet, strong and attractive package fO 「 Office 0 「 industrial applications where memory iS required. The M0del 16 a 区 0 includes a fully buffered DMA S ー 100 bus controller for fast and easy interfacing. WINCHESTER TECHNOLOGY WITH BUILT-IN BACKUP The Model 16 includes a 16 m e g a b y t e 「 e m 0 V a b ー e cartridge and a 16 , 48 , or 80 megabyte fixed media that employs Winchester 3340 technology. Files and programs may be copied between the fixed media and the removable cartridge for fast, easy backup and archival storage. FAST ACCESS The interface between the Mode116 hard disk and the lndustrial Micro Systems computer is provided by the Hard Disk ControIIer. The Hard Disk ControIIer utilizes Direct Memory Access(DMA) for fast data transfer with mlmmum processor interven- tion The maxlmum data transfer rate is 1 .2 megabytes per second and the controller fully buffers the data, a sector at a time, tO and from t h e d i s k . AvaiIable i n 220 V ′ 50 HZ Versions NOW you don't have tO Ok hard fO 「 fast computing power. Contact yourlndustrial Micro systems Dealer t0day. INDUSTRIAL MICRO SYSTEMS Manufacturing 2800 Lockheed Way, Carson City, NV 89701 ( 702 ) 8837611 Marketing 628 N. Eckhoff. Orange, CA 92668 ( 714 ) 978 ー 6966 CIRCLE INQUIRY NO. 23

L しロリ LJ 00t 9-10 Museum Computer Network A れれ u 引 Confer- ence, New York State Museum, Albany, NY, summarizing the state Of computer applications in US and Canadian museums. David Vance, Museum Computer Network, Library E -2340 , State Univ. 0f NY, Stony B 「 00k , NY 1 1794 , ( 516 ) 246-6077. 00t 14 ・ 1 6 Mini/Micro Conference and Exposition, Civic Auditorium, Brooks Hall, San Francisco, CA, technical pro- gram and product expo devoted tO small computers. Mini/ Micro Computer Expo, 32302 Camino Capistrano, Suite 202 , San Juan Capistrano, CA 92675. 00t 14-17 AustraIian Technology Resources Exchange Fair, TRS ・ 80 , Victorian Government Pavilion, 日 . A. S. Show- grounds, Melbourne, Australia, exhibition/conference cover- ing energy management and alternative, renewable energy sources, innovations in production processes, microproces- sors, scientific and bO 「 atO Ⅳ instrumentation. TMAC, 680 Beach St. , Suite 428 , San Francisco, CA 94109. 00t 1 6-19 Mid ・ West Computer Show, McCormick Place, Chicago, に , end-user exhibition featuring small and medium- sized business systems, scientific, engineering computers, and microcomputers. National Computer Sh0WS, 824 BOYIS- ton St. , Chestnut Hill, MA 02167 , ( 617 ) 739-2000. 00t 30 ・ No 1 NationaI SmaII Computer Show, New York CoIiseum, New York, NY, hardware displays Of minis, micros, peripherals, business and industrial software. National Small Computer ShOWS, 1 1 0 Charlotte PI., Englewood Cliffs, NJ 07632. NO 13-16 lnternational Computer Music Conference Queens College, Flushing, NY, concerts, workshops, panel discussions, demonstrations, exhibitions. Dr. Hubert S. Howe, J 「 . , Queens C011ege, Flushing, NY 1 1367. NO 20 ・ 23 Northeast Computer Show, Hynes Auditorium/ PrudentiaI Ctr. , Boston, MA, business systems, scientific and engineering computers, and variety Of micros. National Com- puter Shows, 824 Boylston St. , Chestnut Hill, MA 02167 , ( 617 ) 739-2000. 0e0 1 ・ 3 Computer Crime InfO Conference, CrystaI City Marriott HOteI, ArIington, VA, in-depth discussions Of SO 旧 - tions tO computer security issues for government and busi- ness executives. lnformation Exchange, 1730 N. Lynn St. Suite 400 , ArIington, VA 22209 , ( 703 ) 521-6209. Dec 4 CaIifornia Computer Shows, Hyatt-Pa10 A は 0 , Pa10 A は 0 , CA, OEM and end-user computer and peripheral prod- ucts exhibited and demonstrated. AISO held Apr 23 1981 at Hyatt and Mar 1 2 1981 at Inn-at-the-Park in Anaheim, CA. Norm De Nardi Enterprises, 95 Main St. , Los Altos, CA 94022 , ( 415 ) 941-8440. Jan 27 ・ 29 Advanced Semiconductor Equipment Expo ・ sition, San Jose Convention Center, San Jose, CA, new products and emerging technology in semiconductor equip- ment explored in seminars and exhibits. Cartlidge & ASSOC. , 491 Macara Ave. , Suite 1 014 , Sunnyvale, CA 94086 , ( 408 ) 245-6870. Feb 24-26 Nepcon West ' 81 , Convention Center, Anaheim, CA, PCB/PWB/microelectronic materials, hard- ware, t00 , supplies, and test instruments fO 「 engineering packaging/ production specialists.ISCM, 222 W. Adams St. , Chicago, に 60606 , ( 312 ) 263-4866. 00t 4 ・ 5 Tidewater Hamfest/Computer Show/FIea Market, Virginia Beach, VA, technicalforums and exhibitions Of equipment for computer and radiO applications. Tidewater Radio Conventions, P. 0. BOX 7101 , Portsmouth, VA 23707. Oct 祚 10 lnternational Congress fO 「 Data Processing and Software Exchange, lnt'l. Congress Centre Berlin, trends in data processing, development and problems 0f modern hardware, innovative applications in systems, com- puters and industry and educationaltasks in computer age. AMK Berlin, Messedamm 22 , D -1000 Berlin 19 , W. Germany, ( 030 ) 30 38-1 . 00t 8 ・ 10 Circulation Computer Systems Symposium, Marriott HOteI, Chicago, に , selection Of hardware and soft- ware, new product SUPPOrt, mail 「 00m and distribution con- trols, customer service, subscriber/non-subscriber files, geared for current or potential users Of circulation computer systems. American Newspaper Publishers ASSOC. , BOX 17407 , Dulles lnt'l. Airport, Washington, D. C. 20041. 00t 8 ・ 22 日 ect 「 0 れ ics Tour, Korea, Japan, Taiwan and Hong Kong Electronics Shows, develop foreign markets, observe foreign technology and innovations, seek foreign capital and investment, develop new products and improve personal contacts with foreign counterparts. Commerce Towers lnt'l., 870 Market St. , Suite 762 , San Francisco, CA 94102 , ( 415 ) 433-3072. 別↑ 5 日↑ E5 MICROCOMPUTER SYSTEMS ・れイ / C 「 0C0 ′刃 pute 「 Service ・ Specia/ized Hardware 加ね 9 「 at / on ・ Hardware and SO Ⅳ a 肥 Designs ・ So Ⅳ a Deve/opment Systems / ou 「 Specifications ・ Business System Hardware fO 「 Resa/e ・ We Stock /ndustria/ Microsystems, Ⅳ 0 なわ S ら PerSci, Soroc, 「わ e / / , レéc 「 Graphic 一ト 0 一編 0 ~ 《ま 0 B ー TS N B Y T ES ColIege Business Park 679 ・・ D ” S. State College Blvd. Fullerton. CaIif. 92631 ( 714 ) 879-8386 HOURS 11 A. M. ー 6P. M. M-F Sat. ー By Appt. ・ 0 》 1 ・編 0 編コ」 00 編ト《ト物 RAN P を AV CIRCLE INQUIRY NO. 66 OCTOBER プ 980 124 INTERFACE AGE

DEALERS ・ HANDLER CONCESSIONAIRES DISTRIBUIDORES ・ OEM MICRO-COMPUTER BROKERS INTERNATIONAL, exporters of fine computer pro- ducts, welcomes DEALERS and OEM's worldwide t0 sample our progressive international distribution program. We offer excellent wholesale pricing and, above all, fast and eco- nomical delivery. Contact us now for more information on our dealer program. ま X P 0 す 5 ー第 〇匹のロの AUSGEZEICHNETE GROSSHANDELSPREISE stellen nur emen Aspekt unseres Händlerprogrammes dar. Treten sre noch heute mit uns in Verbindung. (Wir sprechen Deutsch!) ADDS UN EXCELLENT PRIX DE GROS ne représente qu un seul aspect de notre programme de distribution lnternationale. Mettez -vous en contact avec nous aujourd'hui pour recevolr plus de renseignements. ()n parle francais!) Texas わ襯 e れな EL EXCELENTE PRECIO AL MAYOREO que ofrecemos representa sölO un aspecto de nuestro programa de distribu- CIOn lnternaclonal. P6ngase en contacto con nosotros para informaciön mäs detallada. ()e habla espafiol!) / Ze れれん 、針囀ぐー 、 DELIVER. A. D. D. S APPLE ATARI CENTRONICS TELEVIDEO TEXAS INSTRUMENTS AND MO 見 ! INDUSTRIAL MICRO CROMEMCO EXIDY NORTHSTAR SOROC HAZELTINE HEATH/ZENITH SUPERBRAIN / CR 〇 . COMPUTER BROKERS INTERNATIONAL 687 9-P, Ⅳ 0 h 2 な [ Avenue Phoenix, ハル ona 85075 U. S. ハ . Telephone: ( 602 ) 242-9967 TeIex: ( 0 ) 668382 CIRCLE INQUIRY NO. 75 IN AMERICA: or in EUROPE: bcb bussmann computerbase 4790 PADERBORN MUHLENSTR . 3 WEST GERMANY / ( 5251 ) 23135 RETAIL ・ WHOLFSALE ・ SERVICE CONSULTANTS ・ DEVELOPMENTS

川 ini / 川 ic 「 080 Small computer showdown at the GoIden Gate Mini / Mic ro 80 is designed and Brooks Hall and Civic Audito - The sixth Mimcomputer / Micro - organized for the most effecfive rium. 24 applicafions-oriented computer Conference and information -transfer. lt's a profes - technical sessions will be pre - Exposifion puts the small c orn - sional event for computer pro - sented concurrently ⅲ adj acent puter world under one roof ー lecture halls. And more than fessionals. ⅲ beautiful San Francisco. Mark your calendar now for 8000 technical and business 〇 ctober 14 -16. Mini/ Micro in San Francisco ーー executives will parficipate. The newest and most signifi - and return the coupon for lt's the only small c omputer cant small c omputers , periph - detailed technical program , event Of the year ⅲ the super- erals , and systems will be exhibit , and special - event infor - acfive , trend -setting Northern displayed and demonstrated ⅲ mation as S 〇 on as it'S available. California territory ー and more than 300 exhibit units ⅲ 川 ini ic 「 080 32302 Camino Capistrano. Suite 202 , San Juan Capistrano , CaIifornia 92675 Sirs : Name Please make sure I receive all the Title information about Mini / Micr080 ⅲ San Francisco. 〇 ct. 14-16 , 1980. Company ロ Please send information on exhibit- ing immediately. Address ロ Please send technical progam and expo information. City. State , Zip MIN / Micr080, 32302 Camino Capistrano San Juan Capistrano. Ca 92675 ( 714 ) 661-3301 Robert D. Rankin. Managing Drector 山田Ⅲ川 INTERFACE AGE 55 OCTOBER 1980

、 0 ・冊 2 9 5 2 2 一 和加冊加記 をしし第・・第 WITH THE CHEAT-PROOF SLOT coins dropped and holding 15 % fO 「 the house). "Everyone says 'casinos get more money than they should. ' But that's not the point. GambIing is a business. げ you have a machine that is supposed tO pay out 85 % and h0 旧 back 15 % , you want t0 see that 15 % in your pocket. げ you can't predict what you'll get, you have a p 「 0 em. " The micro-based machine stifles 訓 fea 「 s.lt will truncate tO the exact theoretical hO 旧 untilit falls apart in a heap Of dust. But if payouts have tO be highly predictable, the OP- posite is true Of the machine's "play. ' ' must have tOtal randomness. Every player should have the same probability Of hitting a jackpot 0 「 earning a score with each handle pull as any Other. The typical sIOt has three wheels with 22 stops each. That's 223 0 「 10 , 646 possible combinations. TO find out if a machine is truncating tO its theoretical hO 旧 takes 10 cycles 0f operation—or over 100 , 000 handle . and cost a good pulls. は can take a mighty long time . deal Of money tO find out if randomness is lacking and the machine is truncating at 訓 possible stops. (The OP- posite can SO occur: the machine is truly random, but pays out a higher amount than it should. ) The micro completely 「 andomizes and, in the event Of over 0 「 unde 「 payment, picks it up instantly. The mechanics of gambling aside, the microprocessors SO had tO emulate the feel Of the 0 旧 mechanical devices. "SlOts have an 80-year history, Lucero points out. "They bring back an automatic—but The interior Of a 00 れ e 社 ed ot. The ce 飛 e 「 card not electronic—era. '' The sIOts from that periOd had a cage CO れねⅲ 3 mic 「 op 「 ocesso ′ board, interface certain wobbly feel, handle pulls made a distinctive, un- board and commu れ ica 0 れ 3 boa . 0 れ 0 Of the mistakable sound that "talked" tO the player, the spin- chief features Of m 「 0 adaptation that ning wheels gyrated off-sync. The micros reproduce eliminates three Of the 00EE0 れ est player scams: these qualities perfectly. More important, they still give the “朝0k ・ machine cheat ” whO ca れ spot a ma ト the player the feel that he has some control over han ・ fu れ 0 0 れ 9 引 Ot a 代 four 0 「 five handle pulls and dle pulls and kickbacks. ge 地 it tO "rhythm ” jackpots—legally—because 'People ね tO them: 'come on baby,let's have it' 0 「 the machi れ 0 れ Ot 3 引 ec 朝れ 9 3t0P3 randomly due 'l've got this turkey now'.l know an 0 旧 grandmother in tO improper ⅳ b 02 0 れ 0 「れ 0 可 ec 地 d main• southern California whO insists that she has three slOts れ a れ c the shimmy 0 pe 社 whO, with a 可 000 Of in the Dunes HOteI that talk just tO her. They don't, Of super ・ thin shim 3t00k , a b 厄 at 2 れ y autO parts course. They are purely random devices. But we don't shop, ca れ find 2 hair ・ breadth 2P0 杙 u 「 e the tell her that. ” outer case, maneuver hiS Shim 0 e 「 the Lucero forsees a time When the various state gaming bracketry, and op the f 花 0 ・ 3 可れれ 0 wheels commissions will demand third party audits, wherein will. His grandmother ca れ then come 引 0 れ 0 , claim they can enter intO a node unbeknownst tO the casino the jackpot and walk out; 0 「 the cheat with a operator and gather their own raw data on the casino's 20 , 000 rpm moto ′ f 厄 b 厄 02 市旧 0 d 「川 bit ② ra ト operations right from the flOO 「 . When it comes, his up his 引 ee e , whO can bore right 物「 ought the 、、 converts' ' will be ready. tough metal ca れ 0 0 れ st 引厄 d , incidentally, ル tO Howard Hughes progeny will be in good stead. And keep him out), reset the payout mechanism 0 れ Lucero as chief beneficiary smiles quietly at the bright, the hopper and quietly sit there collecting 00 3. flashing future ahead.

ー 3 に らペ MICRO-MARKET ADS SELL YOUR PRODUCTS A new format has been established for the Micro- Market section. AII ads are now 2 inches wide by 3 inches deep. Price is $ 200. Submit ads with check 0 「 money 0 「 de 「 to: INTERFACE AGE Magazine Micro-Market Ads P. O. Box 1234 Cerritos, CA 90701 ( 213 ) 926-9544 WANT BETTER COLOR... MORE STABILITY? 1 E question the quality 0 ′ ou 「 ( omp dis ー RF mod 0 「・・・ 6 リ / 0 color mo ⅲ to ド WE CHALLENGE THAT STATEMENT! DON'T BE SATISFIED WITH EXISTING QUAL ITY. 500 ん′ / 0 町 se ″ what ou ′・・ ne w concepts" mod 0 を 0 「 can dO ん「 yo ic- 加,0... MICRO ・ VERTER Model MVX-JO 535 PP. P ト 0 れ 0 0 ′「 5 w ( omed. ⅱ 0 凵 NE A し , 402 ・ 987 ・ 3 〃 1 ロ BROADWAY ATV 府 0S05 0 み DAKOTA CITY. NE. 聞 7 引 イ ( OG 戸 0 Ⅳ REQUEST We have discounts, manufacturer's warran- ties. FREE shipping and insurance and a TOLL FREE ORDER NUMBER available. C [ と US! Pan American Electronics ー NCORPO 応、 T を 0 a 費 a 0 介 ae ~ AUTHORIZED SALES CENTER 1 1 1 7 Conway, Mission. Texas 78572 TOLL FREE ORDER NUMBER 800 / 531-7466 Texas 8 Principal NO. 512 / 1 -2765 CIRCLE INQUIRY NO. 90 SUMMER SPECIALS VECTOR GRAPH ℃ $ 4295 SYSTEM B & PEACHTREE APPLE Ⅱ + 16K $ 950 GRAPH ℃ S TABLET $ 659 LANGUAGE SYSTEM $ 429 VIS ℃ ALC 125 BASF DISCS ( 10 ) 28 PLEASE CALL FOR QUOTES 0 Ⅳ APPLE PRODUCTS DCC EQUIPMENT 11470 SOUTH STREET CERRITOS, CA 90701 ( 213 ) 860 ・ 9441 CtRCLE INQUIRY NO. 86 Moonshadow Text Formatter fo 「 UCSD PascalTM Systems The UCSD PascalTM system contains a screen ・ 0 「 iented text editor WhiCh iS convenient, but which is not suited tO WO 「 d processing.lt can ・ not underline, paginate automatically, 0 「 perform Other essential text ・ p 「 otessing functions. The Moonshadow T ・対 FO 「 m を鱸町 (MTF) 行 om Merri ・ mack Systems SOIves thIS p 「 Oblem With the Moonshadow Text Formatter. docu ・ ments produced with the screen editor are po 引・ processed tO provide these missing functions. は takes standard Pascal text files, operates on them. and sends fully formatted text output tO the console display, a printer, 0 「 a disk file Moonshadow Text Formatter provides, in addi ・ tion tO a full range Of formatting functions. ad ・ vanced features including the combination Of files intO one document, variables in text ( fO 「 form letters), and output character translation The Moonshadow Text Formatter 旧 written in UCSD PascalTM and is available fo 「 NO 「 th Star AppIe 比 LSI-II, and 8080 / Z80 systems with 旧 M Format 8 を floppy disks. AII this ′ 0 「 $ 125.00 ″ om Merrimack Systems POB 5218 Redw00d City, CA 94063 ( 415 ) 365 ・ 6281 California residents S わ 0 ツ d include 6 % sa/es ね x. み / SO avai/able. NO 「物 Star Pascal pe 「 sonaliza ・ れ on fo 「 SOLJSOLOS JlJSt transfer th 「 ee files and you ・ re up with Pascal. $ 25 00 CIRCLE INQUIRY NO. 88 CIRCLE INQUIRY NO. 83 8 日 0 ″り圧 RS CO ! NorthSta 「 North Star Ho 「に on ート AC 10 日す E 、一を 0 AN 0 ^ 、、を M を 0 ー 32 K DD ー 2295.00 32K QUAD ー 2600.00 16K anda 32 、 RAM ⅸ , 誂 0 、 Application Software NorthWord S335.00 North S ね「 ーⅲ 0 Manager Mail Manager BASIC S245 00 S395-00 Connect yo リ「 TRS-80. Apple 0 「Ⅳ / 0 ーわ e 「 comp リ「 ~ 0 the phone lines, USR-330 Originate— Auto-Answer Modem ・ 0 ー 300 Baud ・ S t a n d A n e ・ RS232 1 Year Warranty ・ CrystaI Controlled $ 339 B ell 1 03 / 1 13 ・ State of the Art LSI circuitry ・ 5 stage actlve fllters FCC certlfied fo 「 dlrect connectlon tO phone llnes Vla standard extenslon phone Jack CaIl or writeforfree literature General Ledger S825-00 North Star Pascal SI 60.00 AccountS Receivable Accounts Pavable S475.00 S475 COD ・ CASHINADVANCE ・ VISA/MASTERCHARGE* ・ A00 2 PE 日 C E 、 1 0 、 CH ARG E 0 日 DE 日 S CUSTOM BUSINESS COMPUTERS 103ATLANTlCAVENUE. LYNBROOK, NEW YORK 11563 ・一 51 朝 887 15000 ′ 887 ・ 3340 CIRCLE INQU/RY NO. 85 MEMOREX 0 ー SK 5 取ー ) 四ー 37 PACIFIC EXCHANGES LJ. S. R ロ日ロ TICS,'INC. 1035 W. LAKE ST. CHICAGO' ーしし・ 6060 ? ( 312 ) 733 ー 0497 CIRCLE INQUIRY NO. 91 NORTH STAR SOFTWARE BUSINESS ACCOUNTING SYSTEMS GENERAL LEDGER $ 300 250 Ledger Accounts 1500 Ledger Transactions ACCOUNTS RECEIVABLE 250 Accounts/2000 Transactions ACCOUNTS PAYABLE . 250 Vendors/1000 Transactions PAYROLL 50 Accounts INVENTORY 800 Accounts 500 CHECK REGISTER COMPLETE BUSINESS SERVICES CORP. 90 WEST CENTER ST. LOGAN, UTAH 84321 ( 801 ) 752-5713 ALL 5 PACKAGES 1000 Checks 1000 Statements 500 Envelopes CIRCLE INQUIRY NO. 84 . $ 300 $ 400 . $ 400 . $ 300 DISKETTES のⅡ圧 ( ) ~ ー 37 PACIFIC EXCHANGES DISKETTES 取ー ) ~ 137 PACIFIC EXCHANGES CIRCLE iNQUlRY NO. 89 . $ 1500

u 記奈ーこ Study forecasts steady mic 「 0 growth despite economic slowdown The microprocessor market Will more than triple by 1983 according tO a re- search study by lnternational Data CO 「 p. Shipments will swell from last year's $ 738 million to $ 2.3 billion by year-end 1983. The primary microprocessor mar- ket—8-bit and 1 6-bit loose micropro- cessor chips (including support chips)— was worth some $ 598 million in 1979. IDC projects a growth rate 0f 36 % per year, reaching $ 2.05 billion in 1983. This estimate allows fO 「 the economic slowdown during 1980 コ n fact, IDC re- ports that the recession is already im- pacting the micro market with declining delivery times.ln 1981 , when the eco- nomic picture brightens, a sharp upturn iS predicted in microprocessor usage. The importance Of support chips is apparent when one examines the ship- ment breakdown. Micro chips had ship- ments Of $ 1 1 9 million in 1979 , while support and memory chips had ship- ments Of $ 479 million—or roughly 65 % Of the total marketlast year. By 1983 , these chips will account f0 「 77 % 0f the total market. Note, however, that the growth predicted is due mainly tO in- creased usage 0f memory chips. レ 0 chips are declining in market share as many Of their former functions are now included on processor chips. addition to the market fO 「 loose chips, microprocessor chips and associ- ated memories may a 0 be incorporated intO boards—either single board com- puters or dedicated function boards. The added value Of these boards (ex- cluding the value Of the components on the boards) was $ 140 million in 1979 , and is expected tO grow at a 23 % annualrate tO $ 316 million in 1983. Firm simply refuses 0 let the defense rest After it won the case brought against it last August by Michael Shrayer S0ftware, Vector Graphic Of Westlake Village, CA, has turned around and filed a cross complaint against Shrayer alleging libel and interference With business relation- ships, and a second suit against Shrayer and several others fO 「 trade libel. The judgement was granted tO Vec- tO 「 after the court found that Shrayer had failed tO prove its allegation that Vector had wrongfully copied the EIec- tric Pencil word processing program. performance evaluations prepared on tOP business miC 「 0 systems Within the past few years, the busi- ness microcomputer has reached プ 2 INTERFACE AGE maturity. NOt 0 可 y is there a wide variety Of computer systems available f0 「 the small business, but with available appli- cation program packages, they can be employed almost immediately. Unlike the larger minicomputers, micros are marketed through retail stores—a relatively new concept in computer merchandising. M ℃ , a data processing publication company, has issued evaluations Of the major busi- ness systems: RadiO Shack TRS-80 ー and , 旧 M 5110 and 5120 , Vector Graphic. Systems, Alpha Micro, OhiO Scientific, Rexon, North Star, C 「 0- memco, Apple and Burroughs B90. Each Of these evaluations iS an in- depth analysis 0f the computer product, its hardware, and software. ThiS set Of business evaluations iS available fO 「 $ 75 ( $ 85 outside the IJ. S. and Canada) from ManagementInforma- tion Corp. , 140 Barclay Center, Cherry Hill, NJ 08034 , ( 609 ) 428-1020. The history Of programming put 0 れ audiO and video tapes Cassettes highlighting the early tech- nical developments Of 1 3 programming languages, and the factors that in- fluenced their creation, are available from the Association Of Computing Machinery, New York City. Some Of the key personalities in the field are included: AIan PerIis and Peter Naur on AIg01, Kenneth lverson on APL, Douglas ROSS on APT, Thomas Kurtz on Basic, Jean Sammet on Cobol, JOhn Backus on Fortran, Geoffrey Gordon on GPSS, Charles Baker on JOSS, Jules Schwartz on JOVial, J0hn McCarthy on Lisp, George Radin on PL/I, Kristin Nygaard and Ole-J0han Dahl on Simula, and RaIph Griswold on Snob01. 旧 addition tO the cassette programs, 訓 excerpted from the 1978 ACM History Of Programming Language Con- ference, a 2- hou 「 program Of all the technical sessions, a program Of the opening session (introduced by Jean Sammet and keynoted by Grace HOP- per), a 2-hour program Of humorous anecdotes from the conference ban- quet with Bernard Galler as master Of ceremonies, and a special slide-show, consisting Of the 2- hou 「 audio-cassette program Of excerpts from the entire technical program and 174 slides, are a 0 available. Keyboards still dominate as communication means Keyboards will remain the ma. 」 0 「 means fO 「 people tO communicate tO machines fO 「 atleast the next 5 years, and the increasing fIOOd Of keyboard- equipped games, terminals and word processors will buoy the market for key- boards. According tO lnternational Re- source Development, shipments Of key- boards will exceed $ 100 million in 1980 , and this figure will at least double by 1985. Although the 「 epo 杙 attaches great significance" tO the rapid devel- opment Of VOice recognition equipment, the 旧 D report expects the keyboard market t0 be largely unaffected by this technology during the current decade. Membrane technology, in which the keyboard is created from severallayers Of specially-configured conducting and non- conducting sheets, is the fastest-grow- ing keyboard technology. Membrane key- boards are popular in applications where dirt 0 「 fluids are encountered, such as in process control and household appli- ances, and they can be mass-produced inexpensively. Although much 0f the fu- ture market for membrane keyboards will be in entirely new applications, such as keyboard-controlled ignition and d00 「 lOCkS fO 「 automobiles, membranes are expected tO take some market share away from Other established keyboard technologies, such as capacitive, induc- tive and Hall effect. Europe: a changing software and service market Western Europe is entering a period Of rapid change. Market forces such as the small business system and mini- computer, new DDP equipment, the wider range 0f packaged software Of- ferings, and the greater availability Of processing services iS increasing de- mand fO 「 processing services, third par- ty software, and professional advisors, according tO a research study by lnter- national Data CO 「 p. A near-$10 billion market is forecast by 1982. processing services Will remain the fastest growing sector, user spending currently growing at a 16 % per annum clip (only slightly less than the 1 7 % growth forecasted fO 「 the IJ. S. market). Spending on remote processing ser- vices will swell by some 28 % , totaling $ 3.6 billion in 1982. Batch services, ac- counting for the largest chunk Of pro- cessing service dO 臉「 s in 1978 , will only increase 4 % , tO $ 2 billion. Currently, 旧 M is the largest single supplier Of pro- cessing services in Europe With revenues 0f $ 394 million in 1978. (ln the U. S. , because of antitrust restric- tions, until 1979 旧 M could not and does not now even participate in this market. ) Most Of 旧 M's closest com- petitors are French-based companies. OCTOBER 1980

VO し . 5,lSSUE 10 SINCE DECEMBER 1975 OCTOBER 1980 よ川一これしこ囹旧こ COMPUT 0 ド 0 日 OM 靏 A 0 日リ 0 SS A P ロ CA 第 0 S FEATURES Computers in the PIayground . ・ by Kathy Tekawa 14 Youngsters have fun while learning with computers. ・・・・・・・・・・・・・・・・・・・・・・・ Hardware EvaIuation: MPI Mini•FIoppy Disk 0 「ⅳ e . . by Roger H. Ede/son 50 lmprovements in drives that use a pulley-band technique. ・・・・・・・・・・ System Of the Month: POIymorphic Twinsystem 88 . . by Tom FOX 56 A 1 0-slOt chassis added to a reliable system. PIace a SpeciaI 0 「 de 「 On ReaI Estate . ・ by GaryA. StOtts 62 Find the home that meets all you 「 requirements. ・・・・・・・・・・・・・・・ Micros Hit the Jackpot with the Cheat-Proof 引 ot . by Michael Panchak 66 The computerized slot-machine takes over in Vegas. Binary Cents and the Smart Checkbook. . by Murray し Lesser 70 A program that computates bank transactions and locates uncleared checks. Program Phone CaIIs tO DiaI... Time … Rate … Re ・ 0引に . by Fred BIechman . 74 Add a $ 3 relay to your micro and communicate with the world. More Bang fO 「 the Bite ・ by David Ve/dQf 80 lncrease storage capacity with Base 40 notation. ・・・・・・・・・・・・・・・・・ 20 SimuIation: Educational Breakthrough . . by J. 0 ″ n Campbe// 86 PotentiaI advantages Of using simulation as a teaching tOOl. ・・・・・・・・・・・ Bringing Your Students intO the 21 st Century ・ by Laurence A. BQ0ker 92 A vocational center instills computer literacy. . ・ . ・・・・・・・・・・・・・・・・・・・・・・・・・ A M0dem lnterface f0 「 the 80S ( Z ・ 80S and 8080S ) . by NeiI M. Harrington .96 What tO consider in choosing a modem foryour computer. lmproving Your ConsoIe lnput by Hugh Poyn 0 「 100 HowtowritethemosteffectiveprogramsinBasic. ・・・・・・・・・・・・・・・・・・・・・・・・ Diagnostics Package fO 「 CP/M by A/an R. Mi//er 104 Test your memory, CPU, disks, console and printer. ・・・・・・・・・・・・・・・・・・・・・・・ lnterrupt ・ Driven Keyboard Buffer . by A/an R. Miller . 106 A more efficient way tO transfer information tO a computer. Accessing AssembIy Language Routines from Basic . . by Jon Lindsay 108 The result Of combining a low-level and a high-levellanguage. ・ . ・ . . . ・・・・・・・・・・・・ 00 しリ MNS Jurisprudent Computerist: Tax deductibility of computer software . ・ .. ・ ... Game CO 「れ e 「 : Computers as teacher's pets lnventor's Sketchpad: Build a simulation system ・ My TRS ・ 80 Likes Me: Play"Guess My Letter" し ea 「れ一れ g WIth M ー 0 「 OS : Educationwithhomecomputers ・・・・・・・・・・・・・・・ MiC 「 0 Mathematician: Rotation of coordinate axes . Bustness Software Revtew: Generalledger series continues ・・・・・・・・・・・ DEPARTMENTS Free Literature Editor's Notebook 6 Letters tO the Editor . 10 New Products . 12 CaIendar . Update Book Reviews . . 126 Contact authors Of monthly columns by writing tO them at INTERFACE AGE, P. 0. BOX 1234 , Cerritos, CA 90701 in care Of their respective columns. Binary Cents .. 70 Automatic TeIephone Dia 厄「 .74 7 8 2 0 8 0 6 . 122 . 110 . 124 Don May CO e 「 photo by . Jim Ramsey Model . INTERFACE AGE Magazine, published monthly by McPheters, WoIfe & Jones, 16704 Marquardt Ave. , Cerritos, CA 90701. Subscription rates: U. S. $ 18.00 , Canada/Mexico $ 20.00 , all other countries $ 28.00. Make checks payable in U. S. funds drawn on a U. S. bank. Opinions expressed in by-lined articles do not necessarily reflect the opinion Of this magazine 0 「 the publisher. Mention Of products by trade name in editorial material or advertisements contained herein in no way constitutes endorsement Of the product 0 「 products by this magazine 0 「 the publisher. Circulation Department, ( 213 ) 926-9540. INTERFACE AGE Magazine COPYRIGHT ◎ 1980 by INTERFACE AGE c. ALL RIGHTS RESERVED. Materia! in this publication may not be 「 eproduced in any form without permission. Requests fO 「 permission should be directed to Nancy Jones, Rights and permission, McPheters, WOlfe & Jones, 16704 Marquardt Ave. , Cerritos. CA 90701. INTERFACE AGE Magazine is catalogued in the Library of Congress, Classification No. QA75.5.155. USPS No. 528150. ISSN publication No. 0147-2992. Member- ship in Audit Bureau Of CircuIations applied fO 「 . POSTMASTER: Please send change of address form 3579 and undelivered copies to INTERFACE AGE Magazine 、 16704 Marquardt Ave. , Cerritos, CA 90701. ControIIed ci 「 culation postage paid at Olive Branch, Mississippi and A 「 tesia, California.