6. (5pts) Using four 1-bit full adders only to design a four-bit combinational Excess-3 to BCD...

6. (5pts) Using four 1-bit full adders only to design a four-bit combinational Excess-3 to BCD converter. Show the block diagram and label all inputs and outputs

Expert Solution

solution:

Truth table:

BCD to Excess 3 code is obtained by adding 3 to the BCD code. To obtain the Excess 3 to BCD code,subtract 3 from the Excess 3 code
Instead of subtracting 3 from the Excess 3 code, add the 2's complement of -3. (ie 0011=>1100 is the 1's complement and give 1 as carry input so that it will become the 2's complement)

Block diagram:

Examples:

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venereology answered 2 years ago

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