A．He sold traffic-counting system to local governments.B．He dropped out of his law course at Harvard University.C．He founded his own company--Microsoft Software company.D．He devised an operating system for IBM.
A．He sold traffic-counting system to local governments.
B．He dropped out of his law course at Harvard University.
C．He founded his own company--Microsoft Software company.
D．He devised an operating system for IBM.