L77@TAUNOS.BITNET (09/23/90)
Can someone please explain what exactly are SIMMS are(I know it's memory
chips you put on a memory-card,but what distinguishes them technically and/or
otherwise from regular 256,1024 etc. memory chips).What's their advantage (or
disadvantage) over regular memory chips ???
Thanx in advanx
Y.MQUINN@UTCVM.BITNET (09/23/90)
>Can someone explain what exactly are SIMMS are ok... SIMMS stands for Single In-line Memory Modules. They are tiny circuit boards with chips eight chips on them (9 for IBM's or computers that need a parity chip). This is what they look like: (sort of :) _________________________________ / ___ ___ ___ ___ ___ ___ ___ ___ | || | | | | | | | || || | | | | | | | || ||___|___|___|___|___|___|___|___|| -|||||||||||||||||||||||||||||||||- Each one of those eight squares is a chip. The bottom part is similar to the bottom prongs on an expansion card, except much smaller. These SIMMS come in either 256k or 1Mb. A memory card (or a motherboard on some computers) that accept SIMMS wil usually four to eight 'slots' that you plug these simes into. The chips on the SIMMS are soldered on and can't be taken off 1 by one as with 256k x 8 chips. Hope this helps. ____________________________________________________________________ | | | | This is your brain... | BITNET-- mquinn@utcvm | | This is your brain on drugs... | pro-line: | | This is your brain on whole wheat.| mquinn@pro-gsplus.cts.com | |____________________________________|_______________________________|
rkh@mtune.ATT.COM (Robert Halloran) (09/24/90)
In article <9009231123.AA05692@apple.com> L77@TAUNOS.BITNET writes: >Can someone please explain what exactly are SIMMS are(I know it's memory >chips you put on a memory-card,but what distinguishes them technically and/or >otherwise from regular 256,1024 etc. memory chips).What's their advantage (or >disadvantage) over regular memory chips ??? A SIMM (Single Inline Memory Module) is 8 (or 9 for Blue Meanies :-)) RAM chips on a single-row carrier board. Major advantage is saving real estate on the main board, as you can fit four single-row sockets in about the same space as one row of DIP chips take up. It's also easier to seat the things, usually, since it has a card edge rather than umpteen pins to get bent under the socket. Disadvantage, obviously, is that if one chip goes out, you have to replace the whole unit. Cost works out to about the same per byte. Bob Halloran ========================================================================= Internet: rkh@mtune.dptg.att.com UUCP: att!mtune!rkh Disclaimer: If you think AT&T would have ME as a spokesman, you're crazed. Quote: "How do you know when a politician is lying? His lips move." - M-m-max Headroom "Read my lips - no new taxes..." - G. Bush, 1988 =========================================================================