synchronus reset with simple respected clock.it is required more no of gates,and it is didnt have metastabilty problem.it is working is slow. 7 G' G. O Y% d# l- k! r
* n1 @* l3 s* }, J* basynchronous reset with out respected to the clock.it is required less no .of gates.it is suffer to the metastability problem.it is working is fast