Newsgroups: comp.sys.ibm.pc.hardware Path: utzoo!censor!geac!itcyyz!xrtll!silver From: silver@xrtll.uucp (Hi Ho Silver) Subject: Re: Designations on chips Reply-To: silver@xrtll.UUCP (Hi Ho Silver) Organization: Yeah, right. Date: Sat, 12 Jan 91 20:05:38 GMT Message-ID: <1991Jan12.200538.10760@xrtll.uucp> References: <1991Jan8.062424.11291@d.cs.okstate.edu> <1046@accucx.cc.ruu.nl> In comp.sys.ibm.pc.hardware, jaapv@accucx.UUCP (Jaap Verhage) typed: $This originally was about upgrading a VGA card. As I've done the $same thing with different chips, I'm beginning to wonder what the $codes on the things mean. Like, what's the difference between a $41256 and a 44256? Furthermore, there seems to be a speed The 41256 is one bit wide; the 44256 is four bits wide. There isn't one purely logical scheme for numbering chips, and some manufacturers have a tendency to create their own favourite numbers for chips. $designation included, like when you see the number on the chip end $with -10. Would anyone please enlighten this poor beginner at how That's a 100 ns chip; it denotes the access time. -12 would indicate a 120 ns chip, etc. -- __ __ _ | ...!nexus.yorku.edu!xrtll!silver | always (__ | | | | |_ |_) >----------------------------------< searching __) | |_ \/ |__ | \ | if you don't like my posts, type | for _____________________/ find / -print|xargs cat|compress | SNTF