An operating system performs these services for applications: In a multitasking operating system where multiple programs can be running at the same time, the operating system determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn.
St. Patrickâs Day. Every year on March 17, the Irish and the Irish-at-heart across the globe observe St. Patrickâs Day. What began as a religious feast day for the patron saint of Ireland has become an international festival celebrating Irish culture with parades, dancing, special foods and a whole lot of green. 1  Facebook. 2  Twitter. 3  Google.
Death and Legacy: St. Patrick's Day. St. Patrick died circa 461 in Saul, Ireland and is said to have been buried in in the nearby town of Downpatrick, County Down. Though he was never formally canonized as a pope, Patrick is on the list of saints and was declared a Saint in Heaven by many Catholic churches.