The document provides an overview of shift registers, which are used for storing and shifting bits, utilizing a chain of flip-flops. It describes various types such as serial in serial out (SISO), serial in parallel out (SIPO), parallel in parallel out (PIPO), and parallel in serial out (PISO), explaining their operations and applications. Additionally, it mentions practical applications in arithmetic operations, data delaying, and conversions between parallel and serial formats.

1. 1
Shift Registers using Flipflops
MEC

2. 2
Contents
• Shift Registers.
• Serial in Serial out Shift Registers.
• Serial in Parallel out Shift Registers.
• Parallel in Serial out Shift Registers.
• Parallel in Parallel out Shift Registers.
• Applications.

3. 3
Shift Registers
• Registers to store bits.
• Shift registers temporarily store bits and
shift it.
• Comprise of a chain of flipflops.
• Data can be entered in serial or parallel.
• Data can be shifted out in serial or parallel.
• Data can be shifted to the left or right.
• Clock pulse to shift data bit by bit.

4. 4
IC 7474 D Flipflop

5. 5
Serial in Serial out Shift Register
(SISO)
• Output of one flipflop connected to the
input of the next flipflop.
• Final output bits from the last flipflop.
• Bit by bit loading and shifting with every
clock pulse.
• Direction of shift depends on the method
of interconnections.

6. 6
SISO
FF0 FF1 FF2 FF3

7. 7
Serial in Parallel out Shift Register
(SIPO)
• Output from all flipflops simultaneously.
• Shifts one bit per clock pulse.
• Shifted value shown at once.
• Direction of shift depends on wiring
configuration.

8. 8
SIPO
FF0 FF1 FF2 FF3

9. 9
Parallel in Parallel out Shift
Register (PIPO)
• Data loaded in parallel into all flipflops.
• Data taken out in parallel from all flipflops.
• Clock driven.
• Useful for temporary storage of data.
• Delays data by one clock pulse.

10. 10
PIPO
FF0 FF1 FF2 FF3

11. 11
Parallel in Serial out Shift Register
(PISO)
• Load/Shift control.
• Data clocked into all flipflops in parallel.
• Data shifted with every clock pulse.
• Output from the last flipflop.

12. 12
PISO
FF0 FF1 FF2 FF3

13. 13
PISO

14. 14
Applications of Shift Registers
• Arithmetic and Logical Operations.
• Delaying bits.
• Temporary storage and shifting.
• Parallel to Serial Conversion.
• Serial to Parallel Conversion.

15. 15
Procedure

16. 16
Youtube Videos
• https://www.youtube.com/watch?v=9bV9ot
TD6ls
• https://www.youtube.com/watch?v=1i_4XC
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• https://www.youtube.com/watch?v=1zxXZ
3qVpBM
• https://www.youtube.com/watch?v=OmAsf
5usnzA

17. 17
Thank You