Doc Overclock · 12-29-2000 · Category: Tech-planations

Flash ROM

Flash ROM is a special type of ROM (Read Only Memory). The flash memory uses a special type of EEPROM (Electronically Erasable Programmable Read Only Memory) that can be erased and reprogrammed in blocks instead of one byte at a time. The ROM memory retains its data content even when the power is turned off. DRAM, instead, requires the supply of a constant electrical current in order to maintain the data within each respective cell. In previous technologies, the ROM could only be programmed in special proprietary devices. Today, with the flash ROM technology as advanced as it is, the data can be altered and programmed with the electronic device itself. This is commonly used to store the flash BIOS programs on motherboards and video cards.

Contents

1. SDRAM
2. RDRAM
3. DDR
4. Flash ROM
5. Cache