This document describes a student project that uses a shift register configuration to create a police chase light effect. It includes a list of components used, such as 8 D flip-flops, 8 LEDs, and resistors. It provides a block diagram and truth table showing how the shift register is configured in serial-in parallel-out mode. The circuit diagram and a simulation are presented. A timing diagram shows the LEDs turning on sequentially in response to clock and data input signals. Pros and cons of using a shift register are discussed, noting ease of implementation but inability to change patterns without reprogramming.

1. AMERICAN
INTERNATIONAL
UNIVERSITY
BANGLADESH
Project Title:
Police Led Chaser Light Using
Shift Register
(SIPO Combination)

2. Course: Digital Logic & Circuits
Section: ‘G’
Course Instructor: Nafiz Ahmed Chisty
Name ID
MD. IMRAN HOSSEN 20-43564-1
ISRAK HOSSAIN PANTHO 21-44401-1
MD. ABID HASAN RAPPY 19-41171-2
KAZI MRIDUL 20-43531-1
AMIT DEY 21-44546-1

3. Abstract

4. Components
Used
Name of Components Amount
Shift Regsiter (D- Flip Flop) 8
LED 8
(4*RED)+(4*BLUE)
Resisitor (5 Ω) 8
Function Generator 2
Oscilloscope (Four channel) 1

5. Basic components
2 *Function generator
4* Red LED
8* 5Ω Resistor
4* Blue LED
1* Four channel Oscilloscope

6. shift registers can be of 4
types:
Shift Register
(D Flip-Flop)

7. Synchronous Shift register Block diagram
Common ClK
SIPO Configuration

8. SIPO Configuration Truth Table
CLK Q0 Q1 Q2 Q3
Initially 0 0 0 0
1st Positive
edge
1 0 0 0
2nd Positive
edge
1 1 0 0
3rd Positive
edge
1 1 1 0
4th Positive
edge
1 1 1 1

9. Circuit
Diagram

10. Simulation

11. Timing Diagram
Data IN
1111
0.5 Hz
CLOCK
4 Hz
10101010
Q0
Q1
1
1
1
1

12. Pros:
1. No need to use PLDs (Programmable Logic Devices)
2. As basic type of circuit so, easy to implement
3. Low in cost
Cons:
1.As PLDs are not used so Cannot be programmed with new pattern
Pros & Cons of using
shift-register

13. Conclusion

14. Thank You