Suppressing ICs which have BGA packages or multiple DC power rails, 2013

In the good old days all digital circuits were large black integrated circuits (ICs) with a row of 7, 8 or 10 pins on a 0.1 inch (2.54mm) pitch spread along each of their long edges. And they all ran on 5V DC power. 

Well, there were exceptions to these rules even then, but the above statement will do to describe the devices most digital logic designers used on most days.

These days, ICs are still black(ish) but are often larger, can have 1000 or more pins in a gridded array covering most/all of one surface – where they cannot be reached by a soldering iron – known as Ball Grid Array (BGA) packaging. And they often need to be provided with several DC power rails.

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