- #1
cupcake
- 73
- 0
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?
Counter Clock Cycle: Ask for Help Here
- Thread starter cupcake
- Start date
-
- Tags
- Counter
Click For Summary
Discussion Overview
The discussion revolves around implementing a counter using the 74193 or 74191 integrated circuits to count three clock cycles. Participants explore various methods to achieve this counting behavior, including the use of a timer 555 and preloading values into the counter.
Discussion Character
- Exploratory, Technical explanation, Debate/contested
Main Points Raised
- One participant seeks clarification on how to configure the counter to count three clock cycles, suggesting the use of a timer 555.
- Another participant interprets the request as wanting to count down from 3 to 0 and proposes preloading the counter with a value of 3 using the BO-bar output.
- A different participant expresses a desire for the counter to count up or down through three states (0, 1, 2 or 2, 1, 0) but is uncertain about the implementation details.
- One participant advises against using the carry signal for reloading if the goal is to stop counting down once reaching zero.
- A later post clarifies the intention to count three clock cycles starting from 00, 01, 10, and then reset, while seeking validation of a schematic drawn for this purpose.
Areas of Agreement / Disagreement
Participants express differing interpretations of the counting requirements, with no consensus on the exact implementation method or configuration of the counter.
Contextual Notes
Participants have not fully resolved the assumptions regarding the desired counting sequence and the specific use of the timer 555 in conjunction with the counter ICs.
- #2
Bob S
- 4,662
- 8
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
- 73
- 0
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
- 4,662
- 8
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
- 73
- 0
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?
Last edited: