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preset enable

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Darlapphood

Jan 1, 1970
0
I have a counter with a two digit seven segment led display. When i tur
the power on it will display random numbers. How do i get it to displa
'00' when i turn it on? Thanks.
 
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Dan Hollands

Jan 1, 1970
0
Darlapphood said:
I have a counter with a two digit seven segment led display. When i turn
the power on it will display random numbers. How do i get it to display
'00' when i turn it on? Thanks.

Most counter have a method of resetting or presetting them. Its hard to know
how to offer advice when you don't say what the chip is .

Dan
--
Dan Hollands
1120 S Creek Dr
Webster NY 14580
585-872-2606
[email protected]
www.QuickScoreRace.com
 
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Rich Grise

Jan 1, 1970
0
I have a counter with a two digit seven segment led display. When i turn
the power on it will display random numbers. How do i get it to display
'00' when i turn it on? Thanks.

You arrange for what's called a "power-on reset". Sometimes, something as
simple as a resistor and capacitor will work, but usually it takes a
little more, like a schmitt trigger buffer. What you do is hold the
counter's "reset" line active (usually low) until the power supply
stabilizes and the input settles.

Good Luck!
Rich
 
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