They are great symbol of revolution not just a logo

What do large companies logo represent – they are not just logo but great symbol of revolution. Find the hidden meaning of company logos.
Sun
The SUN Microsystems which has been purchased by Oracle Inc has masterpiece logo which was developed by Mr Vaughan Pratt – a professor at the famous Stanford University, successfully and beautifully integrates four interlocked copies of the keyword “sun”. The letters S,u and N are interspersed in such a way that the word SUN is formed and read from all four direction.
IBM
The IBM logo,also known as the Big Blue where big signifies the size of the company,blue is the official color.The logo is divided in eight parallel bars and in the lower right corner the lines represent an equal sign which generates a message of equality.
 
CISCO
Len Bosack and Sandy Lerner,  founded Cisco Systems in 1984.In this logo we can see the shape of bridge,which represents the Bridge of San-Francisco and fun part is that their name cisco has been derived from the last five word of the city.
 
 
YAHOO

YAHOO! is an acronym for “Yet Another Hierarchical Officious Oracle.”If you click on the logo’s exclamation point on the Yahoo! home page, you’ll hear the company’s trademark yodel, made famous by country & western music star Wylie Gustafson of Wylie & the Wild West.
 
SONY VAIO
The famous laptop brand from the Sony.It’s logo also have some interesting facts.Combination of V & A in its logo represents the analog signal while I & O represents the 1 and 0 of digital signal.
 
AMAZON.COM
The most profilic online retailer portal has quite interesting logo design.It’s logo  says that amazon.com has everything from a to z and it also represents the smile brought to the customer’s face. 
 
 
INTEL
The leading chips maker INTEL’s developer Bob Noyce and Gordon Moore wanted to name their new company ‘Moore Noyce’ but that was already trademarked by a hotel chain, so they had to settle for an acronym of INTegrated ELectronics.
 
MICROSOFT
Bill Gates coined this icon to represent the company that was devoted to MICROcomputer SOFTware. Originally christened Micro-Soft, later on  ‘-‘ was Removed later on.