- #1
cupcake
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Hello, I want to ask, I have a counter 74193 or 74191, and I want to make it counts 3 clock cycles.. any ideas how to do? we suppose to use timer 555 right?
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To achieve a counter that counts three clock cycles using the 74193 or 74191, preload the counter with the value 3 (binary 11) and count down to 0. For counting up, the counter should increment from 0 to 2 before resetting. It's important not to use the carry signal for reloading if the goal is to stop the count after reaching 0. A schematic has been drawn, but confirmation of its correctness is needed for proper implementation. The discussion emphasizes the need for clarity on whether to count up or down and how to effectively reset the counter.
- #2
Bob S
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I presume you mean that you want to (wanna) divide by 3, or count down from 3 to 0? Using the 74193, use the BO-bar output to preload a 3 (=2+1) into the register and count down to 0. The BO-bar carry will load a 3 into the counter.
Bob S
Bob S
- #3
cupcake
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I want it to count up, (or count down) as long as it counts three clock cycles, for example 0,1,2 (then reset) or, 2,1,0. but, I'm not very sure how to do..
- #4
Bob S
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Also look at thread https://www.physicsforums.com/showthread.php?t=437709
If you want the circuit to count down to zero from a preloaded value and stop (and not count down again), then do not use the carry signal to reload.
Bob S
If you want the circuit to count down to zero from a preloaded value and stop (and not count down again), then do not use the carry signal to reload.
Bob S
- #5
cupcake
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actually I want the counter to count three clock cycles, start from 00,01,10 and then stop and reset everything again.. I have drawn the schematic but not very sure...is this the correct way to implement the counter?
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