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Author Topic: Duplicar as entradas digitais duemilanove  (Read 597 times)
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Kotch
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« on: June 04, 2011, 03:03:26 pm »
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To fazendo um projeto que usa keypad, lcd e algumas entradas digitais e estão faltando entradas!
Alguma ideia de como duplicar?
Usar um 4066 pra multiplexar?
 smiley-confuse
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Kotch
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« Reply #1 on: June 04, 2011, 03:05:59 pm »
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http://www.datasheetcatalog.org/datasheets/270/109221_DS.pdf
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MarceloBoeira
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« Reply #2 on: June 04, 2011, 05:18:29 pm »
 Bigger Bigger Smaller Smaller Reset Reset
eu tinha visto em algum lugar que dava sim, com multiplexador acho que da sim...
só não sei  fazer....
« Last Edit: June 06, 2011, 05:38:20 pm by BOEIRA » Logged
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Kotch
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« Reply #3 on: June 05, 2011, 03:21:00 pm »
 Bigger Bigger Smaller Smaller Reset Reset
Achei uma saida muito interessante de alguem, na internet!

Nao usar a biblioteca keypad e as entradas digitais e sim as entradas analogicas!
só tem que "bolar" um código!
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luiz-sp
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« Reply #4 on: June 06, 2011, 07:33:36 am »
 Bigger Bigger Smaller Smaller Reset Reset
Embora seja usado para porta paralela acho que o conceito se aplica .

http://www.rogercom.com/pparalela/32dispositivos.htm
http://www.rogercom.com/pparalela/32entradas.htm
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Kotch
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« Reply #5 on: June 06, 2011, 04:23:49 pm »
 Bigger Bigger Smaller Smaller Reset Reset
Quote from: luiz-sp on June 06, 2011, 07:33:36 am
Embora seja usado para porta paralela acho que o conceito se aplica .


Valeu!
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