Design a 4-bit synchronous left-shift register using D flip-flops (7474). Your shift register should have an asynchronous parallel load, serial in, serial out, and parallel out bus. You may convert a flip-flop of another type into a D flip-flop, if needed. Answer the following questions in the report: 1. How would you modify this design to provide synchronous parallel load instead of asynchronous parallel load? 2. How would you modify this design to allow a synchronous right-shift along with synchronous parallel load?

Bonus if you can provide a breadboard or logism example.