> > "Jerome H. Fine" <jhfinedp3k at compsys.to> writes: > > > AM27512DC > [...] > > What are they? It is obvious they are an EPROM. > > 27512s are 64 kilobyte EPROMs. (2716 are 2K, 2732 4K, and so on.) The digits after the '27' are the capacity in kilobits. 512kbits = 64kbytes, etc. -tony