Cisco replaces Microsoft as world's most valuable companyREUTERS SAN FRANCISCO, MARCH 25: Cisco Systems Inc, the biggest maker of equipment that powers the Internet, on Friday closed with a higher stock market value than Microsoft Corp, making it the most valuable company in the world. Cisco ended the day with a market capitalisation of $ 579.2 billion (around Rs 25,25,312 crore), slightly ahead of Microsoft's $ 578.2 billion (around Rs 25,20,952 crore). Shares of Cisco closed up 1-9/16 at a reclg...