NAND gate S-R flip-flop

Chapter 7.5 NAND gate S-R flip-flop

Lessons In Electric Circuits Volume VI – Experiments Book
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Lessons In Electric Circuits Volume VI – Experiments Book

  • 7.5. NAND GATE S-R FLIP-FLOP3437.5NAND gate S-R flip-flopPARTS AND MATERIALS• 4011 quad NAND gate (Radio Shack catalog # 276-2411)• 4001 quad NOR gate (Radio Shack catalog # 276-2401)• Eight-position DIP switch (Radio Shack catalog # 275-1301)• Ten-segment bargraph LED (Radio Shack catalog # 276-081)• One 6 volt battery• Three 10 kΩ resistors• Two 470 Ω resistorsCaution! The 4011 IC is CMOS, and therefore sensitive to static electricity!Although the parts list calls for a ten-segment LED unit, the illustration shows two indi-vidual LEDs being used instead. This is due to lack of room on my breadboard to mount theswitch assembly, two integrated circuits, and the bargraph. If you have room on your bread-board, feel free to use the bargraph as called for in the parts list, and as shown in prior latchcircuits.CROSS-REFERENCESLessons In Electric Circuits, Volume 4, chapter 3: ”Logic Gates”Lessons In Electric Circuits, Volume 4, chapter 10: ”Multivibrators”LEARNING OBJECTIVES• The difference between a gated latch and a flip-flop• How to build a ”pulse detector” circuit• Learn the effects of switch contact ”bounce” on digital circuitsSCHEMATIC DIAGRAM