Cisco Systems, Inc. is a leading American technology company that specializes in networking hardware, software, and telecommunications equipment. The company is known for its routers, bridges, frame switches, and ATM switches, which make up the backbone of networks that transport internet traffic. Founded in 1984 by two Stanford University computer scientists, Cisco is now one of the largest technology companies in the world, with over $51 billion in revenue. It continues to be a major force in the technology industry.