1. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 1 Digital Fundamentals CHAPTER 8 Counters

2. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 2 Asynchronous Counter Operation

3. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 3 Asynchronous Counter Operation Asynchronous binary counterAsynchronous binary counter –2-bit asynchronous binary counter –3-bit asynchronous binary counter –4-bit asynchronous binary counter Asynchronous decade counterAsynchronous decade counter

4. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 4 Asynchronous Counter Operation 2-bit asynchronous binary counter2-bit asynchronous binary counter

5. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 5 Asynchronous Counter Operation 3-bit asynchronous binary counter3-bit asynchronous binary counter

6. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 6 Asynchronous Counter Operation 4-bit asynchronous binary counter4-bit asynchronous binary counter

7. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 7 Asynchronous Counter Operation Asynchronous decade counterAsynchronous decade counter

8. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 8 Synchronous Counter Operation Synchronous Counter Operation

9. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 9 Synchronous Counter Operation Synchronous binary countersSynchronous binary counters –2-bit counter –3-bit counter –4-bit counter Synchronous BCD decade counterSynchronous BCD decade counter

10. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 10 Synchronous Counter Operation 2-bit synchronous binary counter2-bit synchronous binary counter

11. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 11 Synchronous Counter Operation 3-bit synchronous binary counter3-bit synchronous binary counter

12. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 12 Synchronous Counter Operation 4-bit synchronous binary counter4-bit synchronous binary counter

13. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 13 Synchronous BCD decade counter

14. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 14 Up/Down Synchronous Counters

15. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 15 Up/Down Synchronous Counters 3-bit up/down synchronous counter3-bit up/down synchronous counter Up/down decade synchronous counter Up/down decade synchronous counter

16. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 16 3-Bit Up/Down Synchronous Counter

17. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 17 Up/Down Decade Synchronous Counter

18. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 18 Counter Applications

19. Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 19 Counter Applications Digital clockDigital clock