ALU design with resisters
Microprocessor use multi-bit flip-flops to store information. These multi-bit flip-flops are known as registers. These registers for example, can store data generated at the output of the ALU. The registers can also be used to exchange or copy data. A register is a set of flip-flops connected in parallel to store multi-bit binary information. The clock inputs of all the flip-flops are connected together, to allow simultaneous latching of the multi-bit input data.
Figure: ALU design with registers
