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YEMEN UNIVERSITY OF SCIENCE &TECHNOLOGY biomedical engineering pulse oximeter project

YEMEN UNIVERSITY OF SCIENCE &TECHNOLOGY biomedical engineering pulse oximeter project. Student work Wesam kamel Izzeldien Dr.Fadel Alakwa. Goals of presentation. Understand the principle of operation of comparator in electronic. Understand the principle of flip flop. topic. comparator.

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YEMEN UNIVERSITY OF SCIENCE &TECHNOLOGY biomedical engineering pulse oximeter project

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  1. YEMEN UNIVERSITY OF SCIENCE &TECHNOLOGYbiomedical engineeringpulse oximeter project Student work WesamkamelIzzeldien Dr.FadelAlakwa

  2. Goals of presentation • Understand the principle of operation of comparator in electronic. • Understand the principle of flip flop.

  3. topic • comparator. • Flip flop.

  4. comparator • The coparator is used to compare to votlage. • an op-amp in open loop configuration can be used as a comparator. • Vout = Ao(V1 − V2)

  5. comparator

  6. Flip Flop • In electronic, the flip flop is a circuit that has two stable state . • The O/P from devic can be one of two possible states. • The O/P will remain that way even after I/P signal are removed. • Flip flop can be used to store state information.

  7. Flip Flop • The flip flpo has basic three component • Latch • Clock • trigger

  8. Latch R=Reset S=Set

  9. Latches • The basic understanding a latch is that if 1 is sent as the set input then the output (Q) will be 1. • Likewise, if 1 is sent as the reset input then the output (Q) will be 0.

  10. NOR Truth & Latch Table

  11. NOR Latch

  12. NAND Truth & Latch Table

  13. NAND Latch

  14. Clock SR Flip-Flop Logic diagram Truth table

  15. Triggering of Flip-Flop Definition of clock pulse transition

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