Definition of EDO (extended data out)

a type of dynamic random-access memory (DRAM) that holds its output on the bus until the beginning of the next bus cycle. This enables the computer to retrieve data from memory in one bus cycle instead of two. (To further gain speed, memory is attached to a fast bus that connects directly to the CPU, rather than the slower bus that connects to expansion cards.) EDO DRAM is often used with Pentium processors. Contrast FPM; SDRAM.