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Contents Vol.14, No.7; July 2001 FEATURES   6  Digital Amplifiers Are Here! The writing is on the wall for analog audio amplifiers. A new breed of digital audio power amplifiers is about to take over and they offer lots of benefits – by Jim Rowe 81  Review: Tektronix TDS3014 Colour Oscilloscope It fits in a shoebox yet boasts an impressive range of features including a colour LCD, an inbuilt disk drive and a printer port – by Leo Simpson 86  Review: PrimSound dScope Audio Test System New Windows-based audio test system measures in both the analog and digital domains – by Leo Simpson The HeartMate Heart Rate Monitor – Page 28. PROJECTS TO BUILD 28  The HeartMate Heart Rate Monitor Build it and keep tabs on your ticker. It’s just the shot for monitoring your heart rate during exercise, so you don’t overdo it – by John Clarke 43  Do Not Disturb Telephone Timer It takes your phone off-hook and automatically hangs up again after a preset time. A LED indicates when the phone is off-hook – by John Clarke 60  Pic-Toc – A Simple Digital Alarm Clock What has less than 20 parts and can wake you in the morning? It’s the PicToc alarm clock and it’s really easy to build – by Michael Moore 66  A Fast Universal Battery Charger; Pt.2 Second article has all the construction details. This unit will solve all your charging problems once and for all – by John Clarke COMPUTERS Do Not Disturb Telephone Timer – Page 43. 14  A PC To Die For, Pt.2 – You Can Build It For Yourself Partitioning & formatting the hard disk drive, installing the operating system & squashing the bugs – by Greg Swain 77  Computer Tips: Backing Up Your Email Backing up your email, DOS for Windows Me, HyperTerminal update & making a quick exit from Windows 98 – by Peter Smith SPECIAL COLUMNS 38  Serviceman’s Log The Televideo that committed hari-kari – by the TV Serviceman 90  Vintage Radio How to repair Bakelite cabinets – by Rodney Champness DEPARTMENTS   2  Publisher’s Letter   98  Ask Silicon Chip 57  Subscriptions Form 100  Notes & Errata 58 Mailbag 102 Market Centre 88  Products Showcase 104  Advertising Index Pic Toc: A Simple Digital Alarm Clock – Page 60. Penguin’s off! Unfortunately, lack of space has forced us to hold over the third article on “Using Linux As An Internet Gateway”. It’ll be there next month – we promise! July 2001  1