Chris Curry of Acorn Talking Computers Applesoft Compilers Cromemco System One
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Volume 5Issue 10 Chris Curry of Acorn Talking computers Applesoft compilers Cromemco System One MicroCentre introduce Cromemco's new System One computer, available with an integral 5 megabyte Winchester hard disk, at a new low price. The System One supports the full range of Cromemco interface cards, including high resolution colour graphics, and software packages. The choice of operating systems includes CDOS, CP/M and CROMIX Cromemco's answer to Unix. Call MicroCentre for Q Cromemco 30 Dundas Street MicroCentre Ltd Britain's independent 13 (Complete Micro Systems) Cromemco importer Edinburgh EH3 6JN *Circle No 101 Tel: 031-556 7354 CONTENTS 33 Editorial / CP/M versus Unix 35 Feedback / Spectrum delays; Mathematical induction; Pet quick formatter News 40 Printout / Epson HX-20 business portable; Jupiter Ace homemicro; Hard disc for NEC PC -8000 Chris Cum, of Acorn Talking computers Appkuott compliers Monte Carlo methods Monte Carlo methods - page 78 78 A beginners'guide / Random members are the basis of a powerful equation -solving technique - William Hill seeks order from Editor the chaos Peter Laurie 01-661 3609 Deputy Editor Bill Bennett Reviews Reporter / David Watt looks at a supermicro from California Ian Stobie 45 CCS 300 Production Editor Computer Systems John Liebmann 48 Dragon 32 / Yet another powerful colour computer for less than Sub -editor £200 - Mike Hughes found the Dragon to be more than a toy Sally Nicholls Editorial Secretary 54 Soundchaser / Electronic music is everywhere, from Switched on Julie Milligan Bach to Top of the Pops - David Ellis reviews a computer -synthesis Consultant system based on the Apple II Chris Bidmead Books / Small business systems; Using Unix; Pet graphics Advertisement Manager 189 Ian Carter 01-661 3021 Assistant Advertisement Manager Features Kenneth Walford 01-661 3139 62 Interview / Chris Curry of Acorn talks to Ian Stobie Advertisement Executives Certainly not the BBC Micro / P K Chilvers weighs up Fiona Howell 01-661 3468 111 the Sinclair Spectrum against its BBC rival Robert Payne 01-661 8425 Advertisement Secretary Janet Thorpe Midlands office: Software David Harvett 021-356 4838 85Applesoft compilers / Looked at for us by Roger Hill Northern office: Wordpro revisited / Add extra routines to enhance your Pet Geoff Aikin 061-872 8861 129 word processor - David Osborne did it first Publishing Director Chris Hipwell Game / Airlander, a game from Nicholas Lloyd which puts you in the 147 hot seat as the plane comes in to land Published by IPC Electrical Electronic Press Ltd, Quadrant House, The Quad- 153 Open file /14 pages ofmicrocomputer software for the serious rant,Sutton,Surrey SM2 5AS.Tel: programmer 01-661 3500. Telex grams892084 BIP- RESG. Typeset and printed by Eden Fisher (Southend) Ltd, Southend-on-Sea. Programming Distributedby IPC BusinessPress (Sales and Distribution) Ltd, Quadrant 93 Paged graphics for the BBC Micro/Apparently House, The Quadrant. Sutton. Surrey instantaneous displays, explained by T K Cowell SM2 5AS. Subscriptons:U.K.£12 perannum; Talking computers / Paul Marsden shows how a microcomputer Overseas £18 per annum; selling price in 116 Eire subject to currency exchange fluctu- can be made to produce natural -sounding speech ations and VAT: airmail rates available on application to Subscription Manager, Applications programming for beginners / Arnold IPC Business Press (S & D) Ltd, Oakfield 124 Maughan, himself a programmer, shares his knowledge House,PerrymountRoad,Haywards Heath, Sussex RH16 3DH. Tel: 0444 Data structures using pointers / How to make effective use 459188. 141 ©IPC Business Press Ltd 1982 of memory space, by David Bolton ISSN 0141-5433 Would-be authors are welcome to send articles to the Editor but PC Micromouse / The silicon rodent makes its return with a maze - cannot undertaketoreturnthem. 132 solving method from Roy Sayers Payment is at £30 per published page. Submissions should be typed or Fiction / Hearing Aid by David Langford computer -printed. Handwritten mater- 135 ial is liable to delay and error. Microcomputers buyers' guide Every effort is made to check articles 195 and listings but PC cannot guarantee Puzzle / Can you shoot the smak beast? that programs will run and can accept 190 no responsibility for any errors. 213Random access / Boris Allan investigates 16 -bit chips PRACTICAL COMPUTING October 1982 3 SYSTEMS FROM £4000 accounting for sales, purchase and nominal ledger, invoicing and stock control WORDCRAFT SYSTEMS FROM £3640 full wordprocessing facilities with high -quality printer SILICON OFFICE SYSTEMS FROM £3640 for powerful data management reporting VISICALC SYSTEMS FROM £2900 financial planning with the world's top selling program DIAL A DEMO Adda is the number one choice for business systems using Commodore's 01- powerful 32K or 96K microcomputer with 1 megabyte disk storage (even 997 more with new hard disks!) Our top four software packages will meet most business needs, at prices you can afford. In every case we will help you 6666 Circle No. 102 select the most cost effective software systems backed with Adda's training and servicing skills. You can also see our top four systems demonstrated in your own office! We have a continuous programme of Open Days at all four sales offices Just call 'Dial a Demo' on 01-997 6666 and we'll fix a time. where you can look at our packages without feeling harassed. Give us a call. We know the Adda deal adds up to a great deal more. CITY WEST LONDON SLOUGH READING National Electronics Centre, Mercury House, Hanger Green, 120 High Street, 275 Oxford Road, London World Trade Centre, Park Royal, London VV1513.BiA. Slough, Berks. Reading, Berks. Europe House, London El 9M. C 01-488 2400 01-997 6666 0753 72470 0734 585928 ALL DEVICES FULL SPEC. AND FULLY GUARANTEED. TERMS OF BUSINESS: CASH/CHEQUE/P.O.S. (OR ACCESS) WITH ORDER. GOVERNMENT AND EDUCA- TIONAL INSTITUTIONS OFFICIAL ORDERS ACCEPTED. TRADE AND EXPORT WATFORD ELECTRONICS INQUIRIES WELCOME. (P&P add 50p on all cash orders). Unless stated otherwise. ALL PRICES ARE EXCLUSIVE OF VAT. PLEASE ADD 15% TO THE TOTAL 33/B,CARDIFF ROAD, WATFORD, Herts, England VAT COST INCLUDING P&P. SHOP HOURS: 9.00am-6.00pm MONDAY TO Tel Watford 109231 40588. Telex: 8956095 SATURDAY. AMPLE FREE CAR PARKING SPACE AVAILABLE. 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