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Two Column Selection Game

The non-profit org I belong to has a push-button match column A with B type of game for kids to play. The first column either shows about a half-dozen pictures of birds, snakes or insects and the second column lists either the name or habitat of the animals. The children (or adults!) push one button from each column and if the correct pair is pushed a green led lights up.

What we'd like to do is to have two lights (green and red). That way if the person picks the wrong pair, the red light would come on. Seems that a logic gate chip is the way to go.

Can someone suggest a simple way to do this?

Thanks.

Reply to
Cosmic Debris
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You some logic to remember if a button is pressed, and more logic to light up the proper LED when the correct buttons are pressed. Then, you want it to reset after a moment, so somebody else can play.

Another way would be to have the device set up so that the test would restart on either a wrong answer, or all right.

Either of these could be done using a few logic chips, and a little 'wall wart' power supply.

Another way to do it would be to have wires and plugs. Wires connected to the left side pictures, and they plug into the sockets on the right representing a correct answer. Not as slick, but much easier to do.

Regards, Bob Monsen

Reply to
Bob Monsen 

--
Well, not so simple, but:

news:hudkh4dm29v0r0d78u8s1sbt44hot2he5r@4ax.com

You can\'t access binary newsgroups through Google,
so if:

tcosmas@gmail.com

is real, I\'ll email you a schematic if you like.

JF
Reply to
John Fields

I'm just catching up with this NG, so this reply is probably too late, but here it is anyhow.

This scheme uses SPDT pushbuttons for the "A" column. The boxes are the red & green lights.

Bob .---. .-->|- -| G |-. | '---' | -v +v | .---. | -A- -B- o--| R |--|

Reply to
Bob Engelhardt

Oops - just noticed that pushing 2 "B" buttons could short +v & -v. This is better:

v v | | .-. .-. ( R ( G ) '-' '-' | | | | o------o | | \\_ _/ | o--o \\o-------------o/ o---o | | | | | | | | | | | | o------o | | | \\_ _/ | | o--o \\o-------------o/ o---o | | | | | | | | | | | | o------o | | | \\_ _/ | | o--o \\o------------o/ o----o | | | | | | | | | | | | ' | | '

| === GND (created by AACircuit v1.28.6 beta 04/19/05

formatting link

Reply to
Bob Engelhardt

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