1. Design a one-bit register that has the following requirements: It has two external inputs. I, is the input bit, L is the control line to control lo input or not. When L = 0, the output will be kept at the current status. When I = 1, the output will be the input lo. Using a D-flip flop to design the 1-bit register. 2. Based on the previous question, design a two-bit register that has two-bit input lo and and a control line L. When L = 1, l, and I will be output. When L = 0, the output will be kept at the current status. Using two D-flip flop to design the two-bit register.