Question: 2. Design a 4-bit binary decrementer with four half-adders. The decrementer should subtract 1 from the 4-bit input and provide the 4-bit output result. Only

2. Design a 4-bit binary decrementer with four half-adders. The decrementer should subtract 1 from the 4-bit input and provide the 4-bit output result. Only Half-adders and inverters can be used in your design.

3. Design a circuit that multiplies an 4 bit number by 3 using only one 4-bit adder and one half adder.

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