DON'T GET CAUGHT IN THE DARK

THE MAGAZINE FOR COMPUTER APPLICATIONS Circuit Cellar Online offers articles illustrating creative solutions and unique applications through complete projects, practical tutorials, and useful design techniques.

	DON'T GET CAUGHT IN THE DARK

Building a Darkroom Timer by Noel Rios Start ı Circuit Operation ı Troubleshooting The Timer ı Using The Timer • Sources and PDF SOURCES and PDF Download the PDF of this Article. Noel A. Rios is an electronics and communications engineer. He has worked with semiconductor and electronics companies including semicon, Microcircuits, IMI, Allegro, and ASTEC. His interests include computers, embedded control, power conversion, test and measurement, and GPIB control. He may be reached at narios@philonline.com. RESOURCES Intel Corp., Embedded Microcontrollers 1986 DataBook, Intel, Mt. Prospect, Il, 1995. Philips Semiconductor, Philips 80C51 Family Databook, Philips, Sunnyvale, CA, 1994. SOURCE AT89C51 Microcontroller ATMEL Corp. (408) 436-4270 Fax (408) 436-4314 www.atmel.com PREVIOUS Circuit Cellar provides up-to-date information for engineers. Visit www.circuitcellar.com for more information and additional articles. For subscription information, call (860) 875-2199, subscribe@circuitcellar.com or subscribe online. ıCircuit Cellar, the Magazine for Computer Applications. Posted with permission.