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ECE 3110: Introduction to Digital Systems

ECE 3110: Introduction to Digital Systems. Instructor: Dr. Xubin (Ben) He Email: Hexb@tntech.edu Tel: 931-372-3462 Course web: http://www.ece.tntech.edu/hexb/311m03. Digital Design. Principles: continue to be important (correct) for years.

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ECE 3110: Introduction to Digital Systems

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  1. ECE 3110: Introduction to Digital Systems Instructor: Dr. Xubin (Ben) He Email: Hexb@tntech.edu Tel: 931-372-3462 Course web: http://www.ece.tntech.edu/hexb/311m03

  2. Digital Design • Principles: continue to be important (correct) for years. • Practices: keep changing: a way to reinforce principles, and learn design methods. • Themes in digital design. Page 2 • Digital design-Engineering:Problem solving! Dr. Xubin He ECE 3110: Introduction to Digital systems

  3. A successful digital designer: • Be competent in: • Debugging • Business requirements and practices • Risk-taking • Communication Dr. Xubin He ECE 3110: Introduction to Digital systems

  4. Analog vs. Digital • Analog: • time-varying signals • Take any value across a continuous range of voltage, current or whatever metric • Digital: SAME. But pretend they don’t. • Modeled as taking only one of two discrete values at any time • 0/1, LOW/HIGH, FALSE/TRUE,… Dr. Xubin He ECE 3110: Introduction to Digital systems

  5. Examples of once-analog systems that have now gone digital: pp3 • Still pictures: film-->digital memory chips • DVD: MPEG-2 • CD • Digital telephone • Traffic lights • … Dr. Xubin He ECE 3110: Introduction to Digital systems

  6. Why Digital? • Reproducibility of results • Ease of design: digital design is logical (logical design) • Flexibility and Functionality • Programmability • Fast • Economy • Steadily Advancing Technology Dr. Xubin He ECE 3110: Introduction to Digital systems

  7. Digital Devices • Gates: • AND, OR, NOT (inverter): most important gates. Can realize any digital function. • NAND, NOR… • Flip-flops: • Stores 0/1, built from gates • Gates: Combinational circuit: output depends only on the current input combination. • Flip-flops:Sequential circuit:output depends on current input as well as past inputs. Has memory of past events.

  8. Digital Logic • Binary system -- 0 & 1, LOW & HIGH, negated and asserted. • Basic building blocks -- AND, OR, NOT Dr. Xubin He ECE 3110: Introduction to Digital systems

  9. Dr. Xubin He ECE 3110: Introduction to Digital systems

  10. Summary • Digital devices • Digial vs analog • Why digial Dr. Xubin He ECE 3110: Introduction to Digital systems

  11. Next… (Chapter 1.6--1.12) • Integrated circuits • PLD • Digital design levels Dr. Xubin He ECE 3110: Introduction to Digital systems

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