The year 2000 sparked a number of doomsday scares, but none was more prominent than the supposed Y2K computer glitch. The problem was this: When computer codes were first written, dates were abbreviated to two digits in order to save memory; for example, "1998" would simply be written as "98." This system worked just fine until 2000, when the date code "00" threatened to cause inaccurate calculations. A 1998 feature story from Microsoft offers an excellent example to illustrate the perceived problem:
"For example, say you buy a new refrigerator in 1999 with a credit card. The bank will run into problems in 2000 when it tries to calculate the interest owed and subtracts the transaction date (99) from the current date (00). The computer is going to come up with the number -99" [source: Crawford].
Some people believed that this glitch would cause apocalyptic consequences. According to these gloomy predictions, at the stroke of midnight on Jan. 1, 2000, airplanes would drop from the sky, elevators would plummet from the tops of skyscrapers, and the world economy would come to a screeching halt. In response to these fears, the U.S. government and American corporations spent a total of $108.8 billion on Y2K computer fixes [source: Karl]. In the end, nothing fell from the sky, but the world's computers did manage to disrupt some credit card terminals in Britain and send out some bills supposedly due in 1900. To the relief of billions, civilization survived almost completely unscathed.