What is Circular shift
The circular shift is also called as rotate operation. It circulates bits of the register around two ends and there is no loss of information. This is done by connecting serial output of shift register to its serial input. We use symbols cil and cir for circular shift left and circular shift right. such as, suppose Q1 register contains 01101101 then after cir operation, it will contains 0110110 and after cil operation it will contain 11011010.