webproger > YouListen
 
 How does your mobile phone work?
http://qindex.info/d.php?c=90#97
 
 What is a MAC Address?
http://qindex.info/d.php?c=90#93
 
 Why Do Computers Use 1s and 0s?
Binary and Transistors Explained.
http://qindex.info/d.php?c=90#99

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