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To: Gerald Underwood who wrote (203)	10/26/1997 10:00:00 AM
From: C.K. Houston	Read Replies (3) of 810

Gerry: Thanks. Saw utilities & nuclear power plants REALLY interested you. CK ________________________________________________________________________ Letter & Questions for Engineers at Power Utilities Who are Dealing With Y2K & Embedded Systems ourworld.compuserve.com Knoxville Utilities Board offices will become a computerized time machine next Labor Day weekend as time leaps ahead more than 15 months ... That's when KUB will run computer system clocks forward to ensure that the utility is properly ''inoculated'' against a potentially fatal case of the ''millennium bug'' ..... 2 to 4 percent of computers with embedded microchips -- perhaps 2 million devices could fail, adversely affecting everything from telephone systems and fax machines to military messaging systems, automatic lawn sprinklers and medical pacemaker devices. knoxnews.com Year 2000 computer and embedded controls problem presents the most challenging USQ (unreviewed safety questions) in the history of nuclear energy. ..... Now let's consider plant operations - both embedded logic and computer based control accsyst.com One in five embedded systems responsible for running critical processes in UK oil, petrochemical, power and aviation manufacturing firms will fail in the year 2000. computerweekly.co.uk The real problem with embedded systems is just that - they're embedded ... burned into the chip's ROM memory, so it cannot be altered. It will require somebody with expertise in the product (the vendor or manufacturer) to get at the system to test for and fix Year 2000 problems. Each embedded system must be treated as if it were a different programming language, which only a few people know. state.id.us I would strongly advise keeping away from the issue of testing. Your example in the letter is poor and may do more harm than good! Many problems will occur which will not be identified by adopting such a simplistic approach to testing. *In reality, testing will potentially take more time and cost more than the discovery phase.* ourworld.compuserve.com

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