PC-DOS-tan

PC-DOS was released in 1981 during the era of IBM + Microsoft cooperation. It started as a re-branded MS-DOS, marketed for the IBM PC while Microsoft marketed MS-DOS to the open market. PC-DOS diverged from MS-DOS after the breakup between Microsoft and IBM. PC-DOS-tan is MS-DOS-tan's (non-canon) twin sister, as both OSes were developed and released together during the era of IBM + Microsoft cooperation. She is similar in appearance to her, with pigtails, round glasses and a school uniform. Her hair is blue, her skirt bears the IBM colors, and she carries an IBM ThinkPad as opposed to MS-DO...