One of my students ran into a question on the CompTIA A+ Certification 801 exam the other day that had me scrambling for a Web search. The question asked about the type of memory used on a SIMM. What? SIMM? I haven’t talked about SIMMs in class or in print for a decade.
Historical scoop: We used single inline memory modules (SIMMs) back in the days when the fastest processor was an Intel 486 running at a whopping 66 MHz. Seriously. Today (read: since Intel came out with the Pentium CPU) every computer uses some kind of dual inline memory module (DIMM). A SIMM has identical electrical contacts on both sides of the stick; a DIMM has contacts that are unique on each side.
When my student mentioned the SIMM question, my response was historical: fast page mode (FPM) or extended data out (EDO). Those were the two memory technologies used on SIMMs. He just shook his head.
The SIMM question gave as possible answers only modern RAM types, like DDR or RDRAM.
An extensive Google session later revealed an obscure (to me) printer-only memory module on a SIMM . . . and it uses SDRAM. Here’s a link, in case you’re curious:
Don’t miss this question when you take the CompTIA A+ exams!