Dell

            Dell Inc. is an American privately owned multinational computer technology company based in Round Rock, Texas, United States, that develops, sells, repairs and supports computers and related products and services. Bearing the name of its founder, Michael Dell.

Seeing as how Dell was the largest manufacturer of personal computers for many years, you've undoubtedly seen the Dell logo innumerable times. You'll notice that the "E" in Dell is turned on its side. The reason? It represents company founder Michael Dell's wish to "turn the world on its ear." Some have also speculated that the slanted 'E' is meant to portray a floppy disk.

Wikipedia

            Wikipedia is a free-access, free content Internet encyclopedia, supported and hosted by the non-profit Wikimedia Foundation. Anyone who can access the site can edit almost any of its articles.The logo of Wikipedia, an Internet-based free multilingual encyclopedia, is an unfinished globe constructed from jigsaw pieces—some pieces are missing at the top—inscribed with glyphs from many different writing systems. As displayed on the web pages of the English-language version of Wikipedia, there is a wordmark "Wikipedia" under the globe, and below that the text "The Free Encyclopedia", in the free open-source Linux Libertine font.

Cisco

       Founded in San Francisco in 1986, the current Cisco logo was rolled out in 2006 and is rather interesting. The vertical lines are meant to represent San Francisco's famed Golden Gate Bridge. The vertical lines also serve to represent a digital signal. Not surprisingly, the first logo Cisco ever had was, you guessed it, an actual drawing of the Golden Gate Bridge. The name Cisco itself is derived from San Francisco.

Sony VAIO

                 Sony VAIO notebooks are quality machines that are just as sleek and well-designed as Apple's. The VAIO logo is distinct and widely recognized, but contains some subtle symbolism. The first two letters "V" and "A" are arranged in such a way to represent a basic analogue signal. The "I" and the "O" were designed to look like the numbers one and zero, representing digital binary code.