Design a circuit that accepts two inputs: a 4-bit number and a 2 bit wide input shift amount. The circuit's purpose is to generate a 4-bit output that reflects the input number after a bitwise left shift. Importantly, this circuit should operate without relying on a clock signal. Use ground for inputs that are zeros. Please label all your inputs and outputs. In class, we considered a counter circuit which counted from 0b000 to Ob111 and then back to 0b000. Design a counter circuit that "stops" at x = Ob1111? That is, if x is not all 1s, then increment by 1. If x is all 1s, then increment by o, i.e., z = 0b1111. Feel free to use the Full Adder component under Misc. Think about how you can turn a Full Adder into a half adder by setting inputs. Also, feel free to wire up the reset line on your flip flops to reset them for testing. Please label all your inputs and outputs. Create a register file comprising four register banks, each capable of storing 4 bits. The register file should have four input signals: a clock signal, a write enable line, and a 2-bit wide register number selector, and data line. Furthermore, the register file should feature a single 4-bit wide output, representing the value currently stored in the selected register. Please label all your inputs and outputs.