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Explain Four-Bit Parallel Adders with block diagram, and also explain truth table.
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Solution:
Four-Bit Parallel Adders:
A group of four bits is called a nibble. A basic 4-bit parallel adder is implemented with four full-adder stages as shown in Figure (a).
Again, the LSBs (A1 and B1) in each number being added go into the right-most full-adder; the higher-order bits are applied …