| FIGURE 2 |
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| "Up" and "down" keys control the digital potentiometer in this stand-alone circuit. The 0.1-mF capacitors provide key debouncing, and the RC circuit connected to the 74LS191 loads the counter with a fixed value at startup time. |
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| FIGURE 2 |
|
| "Up" and "down" keys control the digital potentiometer in this stand-alone circuit. The 0.1-mF capacitors provide key debouncing, and the RC circuit connected to the 74LS191 loads the counter with a fixed value at startup time. |
back |