Page 137 - Handout Digital Electronics

3) The D flip flop is used in most illustration to show the operations of logic circuit, why is it the
obvious choice

18.3 Shift Registers
These registers are designed to shift data along the register in either direction, that is
left and right. They can also do serial to parallel conversion and vice versa operations. Shift registers can
be classified as:

• Serial in Serial Out (SISO)
• Serial in parallel out (SIPO)
• Parallel in Serial Out (PISO)
• Parallel in parallel out (PIPO)

This classification is dependent on how input is applied to and how output is taken from the shift
register.

18.4 Serial in serial out register

Figure 66: SISO shift register

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