One of these systems was a PDP-10 belonging to Computer Center Corporation (CCC), which banned four Lakeside students – Gates, Paul Allen, Ric Weiland, and Kent Evans – for the summer after it caught them exploiting bugs in the operating system to obtain free computer time.
At the end of the ban, the four students offered to find bugs in CCC's software in exchange for computer time.
He remained as chairman and created the position of chief software architect for himself.
Rather than use the system via Teletype, Gates went to CCC's offices and studied source code for various programs that ran on the system, including programs in Fortran, Lisp, and machine language.
The arrangement with CCC continued until 1970, when the company went out of business. hired the four Lakeside students to write a payroll program in Cobol, providing them computer time and royalties.
He was the fourth of his name in his family, but was known as William Gates III or "Trey" because his father had the "II" suffix.
The family encouraged competition; one visitor reported that "it didn't matter whether it was hearts or pickleball or swimming to the dock ...
The computer company first proposed that Microsoft write the BASIC interpreter.