Even knowing which systems are vulnerable can be a challenge. But that doesn t mean that all appliances are safe. If you re concerned, check with the supplier or the manufacturer s website. One challenge to solving the problem is that it occurs on several levels, Floyd said. Y2K problems were programmed into software, are archived in a vast number of documents, files and databases, and were hardwired into much of the computer circuitry manufactured as recently as 1997.
Most computers have a real time clock a chip that keeps time.
They also have a basic input-output system, which uses that timekeeping data. Because saving memory was so important to early computer systems, most older computers and digital control chips use only two digits to signify the year. Other systems use date digits for mathematical processes, such as figuring expiration or delivery dates. It may be a small glitch in some people s systems and cause a major shutdown in others. Y2K compliant may involve replacing one or more chips or circuits, or installing new software, Floyd said.