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Understanding Digital Logic: Encoders, Multiplexers, Demultiplexers, and Flip-Flops

This lecture covers essential concepts in digital logic, focusing on encoders, multiplexers, demultiplexers, latches, and flip-flops. Learn about the Decimal-to-BCD encoder and 8-line-to-3-line encoders for code conversion. Explore data selectors, including 4-input multiplexers and extended multiplexers. Understand the role of clocks in circuits, variations in timing diagrams, and clock generation techniques. Dive into the functionality of various latches and flip-flops, including the D flip-flop and dual D flip-flop. Additionally, gain insights into memory organization through specific logic diagrams.

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Understanding Digital Logic: Encoders, Multiplexers, Demultiplexers, and Flip-Flops

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  1. TK2123 : Lecture 16 The Digital Logic Level (4) Ass. Prof. Dr. Masri Ayob

  2. Encoders: Decimal-to-BCD Encoder

  3. Encoders • 8-line-to-3-line encoder

  4. Code Converters: BCD-to-binary conversion

  5. Multiplexers (Data Selectors) • 4-input multiplexer

  6. Multiplexers (Data Selectors) • Expanded multiplexers

  7. Demultiplexers • 2-line-to-4-line demux

  8. Clocks (a) A clock. (b) The timing diagram for the clock. (c) Generation of an asymmetric clock.

  9. Latches (3) A clocked D latch.

  10. Flip-Flops (1) (a) A pulse generator. (b) Timing at four points in the circuit.

  11. D flip-flop

  12. Flip-Flops (3) D latches and flip-flops.

  13. Flip-Flops (4) Dual D flip-flop.

  14. Memory Organization (1) Logic diagram for a 4 x 3 memory. Each row is one of the four 3-bit words.

  15. Thank youQ&A

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