Information technology. The bug stops here

The millennium bug arises because up to the 1980s computers were programmed to represent years by the last two digits only. So, when the millennium arrives, programmes which represent the year 2000 as 00 will be unable to make the transition from 1999 into the 21st century. Such programs have been written into microchips, hardware and software. The problem is not restricted to computers, but extends to systems that rely on embedded chips, such as air conditioning, lifts, lighting, security and electro-medical equipment. The potential catastrophic consequences for patient care and administration are clear, and raise liability issues of which NHS managers need to be aware.