Compaq Computer Corporation was a company founded in 1982, that developed, sold and supported computers and related products and services. Compaq produced some of the first IBM PC compatible computers, being the first company to legally reverse-engineer IBM Personal Computer. It rose to become the largest supplier of PC systems during the 1990s before being overtaken by Dell in 2001. Compaq was acquired for US$25 billion by HP in 2002. - Source: Wikipedia