Casio Cassiopeia A-10/11 A-20/21/22 port pinout
Compaq (occasionally referred to as CQ prior to its final logo) 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 the IBM Personal Computer. It rose to become the largest supplier of PC systems during the 1990s before being overtaken by HP in 2001. The Compaq brand remained in use by HP for lower-end systems until 2013 when it was discontinued.