The first laptop that was commercialized was Osborne 1 in 1981, with a small 5″ CRT monitor and a keyboard that sits inside of the lid when closed. It ran CP/M (the OS that Microsoft bought and based DOS on). Later portable computers included Bondwell 2 released in 1985, also running CP/M, which was among the first with a hinge-mounted LCD display. Compaq Portable was the first IBM PC compatible computer, and it ran MS-DOS, but was less portable than Bondwell 2. Other examples of early portable computers included Epson HX-20, GRiD compass, Dulmont Magnum, Kyotronic 85, Commodore SX-64, IBM PC Convertible, Toshiba T1100, T1000, and T1200 etc.