PC Computer

PC Computer is a OS Made by Computer Integrated Machines Co. in 1881 to 1945

PC Computer (1881-1920)
PC Computer Test Demo (1881)

PC Computer 1890 (1890)

PC Computer 1900 (1900)

PC Computer 1910 (1910)

PC Computer 1920 (1920)

PC-DOS (1920-1945)
PC-DOS 1.0 (1921)

PC-DOS 2.0 (1930)

PC-DOS 3.0 (1940)

PC-DOS 4.0 (1944)