47 chapter 3 computers in china michael pecht and weifeng liu over the past ten years chinese built have become nearly state of art devices very competitive with multinationals s personal computer pc market accounted for a 37 percent share asia pacific region japan excluded by end 1999 top companies like legend group great wall beijing founder electronics are working diligently to establish reputation quality service brand name prominence not only domestic but also world mainframe lag behind its development technology manufacturing advances this difference will surely decrease history industry started late 1950s 1958 first made vacuum tube called 901 was manufactured at institute military engineering within prestigious university harbin during time received foreign aid from former soviet union assist scientific research 1960s 1970s several systems were developed including 100 150 series these