There are two types of flash storage: NOR (not- or negated-or) and NAND (not- or negated-and); NOR flash appeared first. NOR flash has slower I-O speeds than does NAND flash, and NOR flash can be address individual bits in contrast to the page-level access required by NAND flash. Unless explicitly indicated otherwise, "flash" refers to NAND flash in these notes.
This page last modified on 24 January 2006.