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Contents Vol.12, No.3; March 1999 FEATURES 4 Dead Computer? Don’t Throw It – Rat It! There’s lots of goodies that you can scrounge from an old computer – by Leo Simpson 7 Getting Started With Linux; Pt.1 You don’t have to run Windows on your computer – by Bob Dyball 82 Electric Lighting; Pt.12 LED lighting for traffic lights & signs – by Julian Edgar Build A Digital Anemometer – Page 14. PROJECTS TO BUILD 14 Build A Digital Anemometer Low-cost unit uses a $12 LCD bicycle speedometer – by Julian Edgar 24 3-Channel Current Monitor With Data Logging Easy-to-build card plugs into your PC and logs data to an Excel spreadsheet – by Mark Roberts 34 Simple DIY PIC Programmer You won’t believe how easy it is to program at home – by Michael Covington & Ross Tester 56 Easy-To-Build Audio Compressor Uses a single IC and can be used with guitars, microphones and other low-level signal sources – by John Clarke 3-Current Monitor With Data Logging – Page 24. 62 Low Distortion Audio Signal Generator; Pt.2 The full construction details – by John Clarke SPECIAL COLUMNS 19 Serviceman’s Log Instant servicing; there’s no such thing – by the TV Serviceman 53 Radio Control Simple Do-It-Yourself PIC Programmer – Page 34. Model R/C helicopters; Pt.3 – by Bob Young 78 Vintage Radio The Radiolette Model 31/32 – by Rodney Champness DEPARTMENTS 2 30 42 75 88 Publisher’s Letter Mailbag Circuit Notebook Product Showcase Ask Silicon Chip 92 93 94 96 Notes & Errata Order Form Market Centre Advertising Index Easy-To-Build Audio Compressor – Page 56. MARCH 1999  1