How and when did Bill Gates start his career?

Bill Gates’s career began when he left Harvard to pursue his business Microsoft with partner Paul Allen. Allen and Gates had been friends since their days at Lakeside School, their common interest being an interest in computers. Because computers was a hobby for both of them, when they did hang out, they spent a lot of time just working on computers. Their initial foray into technology was in their teens when the two partnered to create “Traf-o-data,” a program that monitored traffic patterns in Seattle.

Then, at some point, they went off to college with Allen going to Washington State University and Gates going to Harvard. Allen left college and began working for another company when he caught up with Gates and showed him an article on a mini-computer kit (Altair 8800).

They contacted Micro Instrumentation and Telemetry Systems (MITS) and worked out a deal for providing a demonstration for writing a code that would work with their program. The demo worked out perfectly, and Allen got hired and then Gates followed after leaving Harvard. The two then started Microsoft in 1975.