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ALTERNATIVE REPRESENTATIONS OF LOGIC GATES
 
V. Ryan 2003 - 2009
 
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A 1 means that current is present. For instance, if current is present at an output of a gate then this is represented as a 1. Instead of placing a 1 at the output other terms can be applied - high, true, on or up - all mean that current is present.

A 0 means that current is not present. For instance, if current is not present at an output of a gate then this is represented as a 0. Instead of placing a'0 at the output other terms can be applied - low, false, off or low - all mean that current is not present.

Alternative ways of representing the AND gate are written below.
 
 
 

 
 
 
QUESTION:
Write the OR truth table using alternative terms other than ‘1s’ and ‘0s’.
 
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