Registers

Flip Flop is 1 Bit memory cell. To increase the storage capacity we have to use group of flip-flop. this group of ff is known as REGISTER.

n bit register consist of n number of flip-flops.

Data formats & Classification of Registers

data can be entered in serial or in parallel form.

Classification of Registers

Depending on Input and Output

1. Serial in – Serial out (SISO)
2. Serial in – Parallel out (SIPO)
3. Parallel in – Serial out (PISO)
4. Parallel in – Parallel out (PIPO)

Depending on Application

1. Shift Registers
2. Storage Registers

Shift Register (Serial In Serial Out)

PIPO / Storage Reg / Buffer

Bidirectional Shift Register

Universal Shift Register