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- Newsgroups: sci.electronics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!newsserver.pixel.kodak.com!laidbak!tellab5!vpnet!cgordon
- From: cgordon@vpnet.chi.il.us (gordon hlavenka)
- Subject: Re: "The Glob" Atari 2600 processors ???
- Message-ID: <1992Dec17.181207.26799@vpnet.chi.il.us>
- Organization: Vpnet Public Access
- References: <kennehra.724560313@craft.camp.clarkson.edu>
- Date: Thu, 17 Dec 1992 18:12:07 GMT
- Lines: 21
-
- kennehra@craft.camp.clarkson.edu (Rich"TheMan"Kennehan) writes:
- >Hi. I opened up one of my atari 2600 games, and instead of a regular
- >chip inside, there was this small plastic glob where the ROM chip
- >should be!!!! what is this?
-
- Simple -- It's the ROM. If you're building a _lot_ of something, it's
- cheaper to simply mount the IC die directly to the PCB. The bondout
- wires are then tacked to PCB traces, and a drop of epoxy is put over
- the whole thing for environmental protection.
-
- Most cheap digital clocks and watches are also built this way, also
- those musical greeting cards, the "Pocket Terminator", etc.
-
- Obviously, if the thing doesn't work you can't fix it. But this
- assembly technique is only used where the volume is so huge that you
- can afford to just toss the rejects.
-
- --
- ----------------------------------------------------
- Gordon S. Hlavenka cgordon@vpnet.chi.il.us
- Vote straight ticket Procrastination party Dec. 3rd!
-