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1. Design an excess -3- to-BCD code converter using a bit full adders MSI circuit. 2. Design a combinational circuit that converts a decimal digit from 8, 4,-2, -1 code to BCD. 3. Draw the logic diagram of a 2-line to 4-line decoder/de-multiplexer using NOR gates. 4. Implement a full-subtractor with two half-subtractor and an OR gate. 5. ................
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