Counter circuit - Electronic Circuits Projects Diagrams Free

pas_cktmaker · 2nd October 2007, 06:44 AM

hello all,

i am making a IR motion detector circuit(WITHOUT USING microcontroller)which also incorporates a counter circuit to it..thereby displaying the no. of times the IR beam is interrupted by obstructions.

as of now.the counter circuit that i have come up with incorporates 3 IC's per 1 7-segment display,namely :
(1)7447;BCD to 7-segment decoder
(2)7490;Decade counter
(3)7730;7-segment display

but this is making the counter circuit itself very bulky.i need a suggestion-
is there some IC which can substitute for all these ICs,OR ,any other way to make a counter circuit.

boxer4 · 3rd October 2007, 02:58 AM

If you can source 74C925s it will reduce chip count, but I'd say you're ruling out the best solution - a microcontroller.

ericgibbs · 3rd October 2007, 06:56 AM

hi,
Get the datasheet for the Maxim ICM 7217.

www.datasheetarchive.com

mvs sarma · 3rd October 2007, 07:02 AM

Perhaps it is a practice project for one's capability in digital design-- if one could do away with offshelf counters, it may not add-up to the experience of a person.

Pas_cktmaker may try CMOS chips where he will get a composite counter cum seven segment converter per each digit in a chip

ericgibbs · 3rd October 2007, 07:47 AM

Quote:

Originally Posted by mvs sarma

Perhaps it is a practice project for one's capability in digital design-- if one could do away with offshelf counters, it may not add-up to the experience of a person.

Pas_cktmaker may try CMOS chips where he will get a composite counter cum seven segment converter per each digit in a chip

hi Sarma,
This is what the OP requests.

>> is there some IC which can substitute for all these ICs,OR ,any other way to make a counter circuit

pas_cktmaker · 3rd October 2007, 03:09 PM

Thanks Alot everyone for your valuable suggestions..

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2nd October 2007, 06:44 AM	(permalink)
pas_cktmaker	Counter circuit hello all, i am making a IR motion detector circuit(WITHOUT USING microcontroller)which also incorporates a counter circuit to it..thereby displaying the no. of times the IR beam is interrupted by obstructions. as of now.the counter circuit that i have come up with incorporates 3 IC's per 1 7-segment display,namely : (1)7447;BCD to 7-segment decoder (2)7490;Decade counter (3)7730;7-segment display but this is making the counter circuit itself very bulky.i need a suggestion- is there some IC which can substitute for all these ICs,OR ,any other way to make a counter circuit.

3rd October 2007, 02:58 AM	(permalink)
boxer4	If you can source 74C925s it will reduce chip count, but I'd say you're ruling out the best solution - a microcontroller.

3rd October 2007, 06:56 AM	(permalink)
ericgibbs	hi, Get the datasheet for the Maxim ICM 7217. www.datasheetarchive.com __________________ Eric "Good enough is Perfect" PIC tutorials: Gramo's: www.digital-diy.net/ Bill's: www.blueroomelectronics.com/ Last edited by ericgibbs; 7th July 2008 at 11:21 AM.

3rd October 2007, 07:02 AM	(permalink)
mvs sarma	Perhaps it is a practice project for one's capability in digital design-- if one could do away with offshelf counters, it may not add-up to the experience of a person. Pas_cktmaker may try CMOS chips where he will get a composite counter cum seven segment converter per each digit in a chip __________________ Regards, Sarma. Last edited by mvs sarma; 3rd October 2007 at 07:06 AM.

3rd October 2007, 03:09 PM	(permalink)
pas_cktmaker	Thanks Alot everyone for your valuable suggestions..