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Exploring Latches and Flip-Flops in Digital Electronics: A Practical Lab Guide

Discover the fundamentals of latches and flip-flops in digital electronics through hands-on lab activities. Learn about single-bit memory elements, SR Latch, D Latch, D Flip-Flop, and more.

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Exploring Latches and Flip-Flops in Digital Electronics: A Practical Lab Guide

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  1. The George Washington UniversitySchool of Engineering and Applied ScienceDepartment of Electrical and Computer Engineering ECE122 – Lab 6 Latches & Flip-flops Jason Woytowich October 7, 2005

  2. Latches & Flip-flops • Single bit memory elements • Latches change state whenever the inputs dictate it • Flip-flops only change state on rising or falling clock edges

  3. SR Latch • Set/Reset Latch

  4. SR Latch • NOR Implementation

  5. SR Latch • NAND Implementation

  6. SR Latch

  7. D Latch • A Gated Latch

  8. D Latch • An SR Latch implementation

  9. D Latch

  10. D Flip-Flop • The value of D is stored on either the rising or falling clock edge. Clock D Q

  11. DFF • Master-Slave Implementation

  12. DFF

  13. DFF • Gate Trigger Implementation

  14. Positive Gate Trigger There are an odd number of inverters.

  15. Positive Gate Trigger

  16. DFF

  17. Lab Activities • Build and test an SR Latch from NAND Gates • Build and test a D Latch from the SR Latch • Build and test a DFF from your D Latch, MS or PGT

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