well-known acronyms

World famous acronyms. What do the BIG LETTERS mean?

Hi colleagues and pupils. Today, I have decided to share with you popular acronyms. I took them from one of my friend's what's up message. I hope, they will be useful for you.

1. *PAN*
Primary Account Number.

2. *PDF*
Portable Document format.

3. *SIM*
Subscriber Identity Module.

4. *ATM*
Automated Teller Machine.

5. *Wi-Fi*
Wireless Fidelity.

6. *GOOGLE*
Global Organization Of
Oriented Group
Language Of Earth.

7. *YAHOO*
Yet Another Hierarchical
Officious Oracle.

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