The Chinese typewriter was ultimately eclipsed and made redundant with the introduction of computerised word processing, pioneered by engineer and dissident Wan Runnan and his partners when they formed Stone Emerging Industries Company () in 1984 in Zhongguancun, China's "Silicon Valley". The last Chinese typewriters were completed around 1991. Stone developed software based on Alps Electric custom made 8088 based hardware with a Brother Industries dot matrix printer, distributed by Mitsui, to print Chinese characters and released the system as the MS-2400.