IBM
During World War II, IBM made guns for the American army. During the 1960s and 1970s IBM dominated the mainframe computer market. IBM computers were used for American space exploration. From the 1980s starting in 1981 until 2005, IBM made personal computers. In 2005, IBM sold their personal computer manufacturing to a Chinese company called Lenovo. Today, IBM mostly makes software, and some powerful supercomputers.