The rest of us, including a number of hardware engineers who have learned from history, would point to the real-time clock chip that did hardware rules for thin

The rest of us, including a number of hardware engineers who have learned from history, would point to the real-time clock chip that did hardware rules for things right for only one country for a mere three years in the 1980s, until the legislation changed, and whose behaviour has been wrong ever since. Step forward the MC146818, used in the PC/AT and emulated by chipsets since, whose built-in daylight savings time change rule implemented in hardware was rendered obsolete in 1987. http://catless.ncl.ac.uk./Risks/24.60.html#subj12.1 http://catless.ncl.ac.uk./Risks/24.60.html#subj12.1