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. % ^3 T- l% k0 |3 p
8 u& `" ~1 {" L: ]+ Vasynchronous 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