Thanks, that's exactly what I was looking for.


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Posted by Munich on 6, 2001 at 3:43 PM:

In Reply to: How to make a Printed Circuit Board (read) posted by Android on 6, 2001 at 12:31 PM:

Thanks much. If anyone else has any tips in this area, I'd love to hear (read) them.

Thanks.


: There's nothing wrong with using discrete logic. In fact in some situations, and after factoring in the cost of the development tools, it would be cheaper and just as effective to use discrete logic. PALs and PICs make sense when you have hundreds of gates or need an intelligent circuit, like a keyboard encoder. If you still want to use PALs or PICs, go to www.national.com or www.ti.com to select and get datasheets and go to www.jameco.com, www.jdr.com, www.digikey.com or your nearest Fry's to buy them.

: Once you decide what to use, you will need to mount your circuit. For a more permanent solution that you can actually leave in your cabinet without worrying about it falling off, you need to either wirewrap or use a printed circuit board.

: Wirewrap is the easiest: you place all your components on special sockets on a perf board and then wire them up on the underside. You can get all the tools and materials at radioshack.

: A more professional finish can be achieved by etching your own PCB and then soldering your components to it. To do so, you design the traces on your PC and print it on transparency sheets in your LaserJet. Then you get photoresist copper boards from RadioShack and apply your printout under a strong light. Then you develop and etch your circuit using chems from Radio shack and finally you drill the holes to place your devices. Then you place your components and solder. With this technique you will get professional results, like the I-PAC.

: -- Android

: : I have come up with a simple circuit that I hope can be used to make 8-way joysticks act more like 4-way joysticks. It consists of just a handful of logic gates -- nothing really complicated. I've run the circuit though a number of simulators and the results thus far look promising.

: : So my question is how to realize this thing. I could do like I did in college and get a breadboard a few ICs and wire them all together, but I was hoping for something a little more elegant than that.

: : Unfortunately, I have no experience with doing this any other way and I can't seem to find any good ideas on the internet. So, I ask you, is there a way to get a discrete logic circuit into a single chip, and if so, what would I need to do it?

: : Regards,

: : Munich




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