A
Animesh Maurya
- Jan 1, 1970
- 0
I am designing a 7 segment LED counter which is using 74LS90 as BCD
counter and 74LS47 as BCD to 7-Segment Decoder/Driver.
Counter is intended for counting no. of interruptions between an IR
LED and IR sensor module (TSOP1738).
Interruption so caused triggers a 555 monostable whose output is
connected to the counter (pin 14).
I need to know is the above arrangement good enough to make counting
upto say 20Hz or so,
assuming output of the monostable in of the order of few
milli-seconds.
If there is any more effective arrangement please suggest it.
Thanks
Animesh Maurya
counter and 74LS47 as BCD to 7-Segment Decoder/Driver.
Counter is intended for counting no. of interruptions between an IR
LED and IR sensor module (TSOP1738).
Interruption so caused triggers a 555 monostable whose output is
connected to the counter (pin 14).
I need to know is the above arrangement good enough to make counting
upto say 20Hz or so,
assuming output of the monostable in of the order of few
milli-seconds.
If there is any more effective arrangement please suggest it.
Thanks
Animesh Maurya