1. what is the approximate duty cycle for an 4-bit pwm if r = (9)10. 2. what is the approximate duty cycle for an 4-bit pwm if r = (2)10. 3. what is the approximate duty cycle for an 8-bit pwm if r = (63)10. 4. what is the approximate duty cycle for an 8-bit pwm if r = (191)10. 5. sketch out your verilog code for all of the modules defined below (except the clock module). pseudo-code is provided in the notes handout on canvas.