More on basics of shift register

SISO: Data enterd serially into the register of specific size and output taken out serially during next clock cycles

SIPO: Data enterd serially into the register of specific size and output taken out at a time in parallel during next clock cycles

PISO: Data enterd at a time in parallel into the register of specific size and output taken out serially during next clock cycles

PIPO: Data enterd at a time in parallel into the register of specific size and output taken out at once 

during next clock cycles.

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