Basic objective of this lecture is to presentation on Register. Register is a gaggle of flip-flops. Each flip-flop is efficient at storing one amount of information. An n-bit register is made up of group of n flip-flops efficient at storing n items of binary information. Beyond the flip-flops, it often have combinational gates that perform certain information processing tasks. Inside its broadest definition, it is made up of group of flipflops in addition to gates that effect their transition. The flip-flops contain the binary information along with the gates determine the fact that information is transferred into a register.