Construct the decimal adder with two 4-bit adders

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It is necessary to design a decimal adder for two digits represented in the excess-3 code. Show that the correction after adding the two digits with a 4-bit binary adder is as fol-lows:

(a) The output carry is equal to the carry from the binary adder. l

(b) If the output carry = 1, then add 0011.

(c) If the output carry = 0, then add 1101. Construct the decimal adder with two 4-bit adders and an inverter.

Reference no: EM131191058

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