4 bit Up/Down Counter using 74HC191

Step-by-Step Procedure

1. Click on 'Next' button to Add IC-74HC191
2. Click on 'Next' button to Connect GND and VCC of IC
3. Click on 'Next' button to Connect Clock to Pin-14
4. Click on 'Next' button to Connect U/D Control to Pin-5
5. Click on 'Next' button to Connect Pin-4 to GND
6. Click on 'Next' button to Connect Input 'Load' (Pin-11) Vcc
7. Click on 'Next' button to Connect Output 'Q0' to Output Port
8. Click on 'Next' button to Connect Output 'Q1' to Output Port
9. Click on 'Next' button to Connect Output 'Q2' to Output Port
10. Click on 'Next' button to Connect Output 'Q3' to Output Port

Block Diagram

ICs used in this circuit with pin diagram

74HC191

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74HC191

Synchronous 4-Bit Up/Down Counters with Mode Control

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