One Canada Square is a skyscraper in Canary Wharf, London. It was the tallest building in the United Kingdom from 1990 to 2010, standing at 770 feet (235 m) above ground level and containing 50 storeys. In late 2010, it was surpassed by The Shard (completed in July 2012) which stands at 309.6 metres (1,016 ft). One Canada Square was designed by principal architect Cesar Pelli, who based the design and shape mainly on the World Financial Center and the shape of Elizabeth Tower although the developers' (Olympia and York) previous flagship projects, First Canadian Place in Toronto and the Aon Center...

First Canadian Place (originally First Bank Building) is a skyscraper in the financial district of Toronto, Ontario, at the northwest corner of King and Bay streets, and is the location of the Toronto operational head office of the Bank of Montreal. At 298 m (978 ft), it is Canada's tallest skyscraper and the 15th tallest building in North America to structural top (spires) and 9th highest to the roof top, and the 105th tallest in the world. It is the third tallest free-standing structure in Canada, after CN Tower (also in Toronto) and the Inco Superstack chimney in Sudbury, Ontario. The building...

Ontario is a city located in southwestern San Bernardino County, California, United States, 35 miles (56 km) east of downtown Los Angeles. Located in the western part of the Inland Empire region, it lies just east of the Los Angeles county line and is part of the Greater Los Angeles Area. As of the 2010 Census, the city had a population of 163,924, up from 158,007 at the 2000 census, making it the county's fourth most populous city after San Bernardino, Fontana, and Rancho Cucamonga. The city is home to the LA/Ontario International Airport, which is the 15th busiest airport in the United States...

In computer systems programming, an interrupt handler, also known as an interrupt service routine or ISR, is a callback function in microcontroller firmware, an operating system or a device driver, whose execution is triggered by the reception of an interrupt. In general, interrupts and their handlers are used to handle high-priority conditions that require the interruption of the current code the processor is executing. Interrupt handlers have a multitude of functions, which vary based on what triggered the interrupt and the speed at which the interrupt handler completes its task. For example...