ROM stands for read only memory. EPROM stands for erasable programmable read-only memory, it is the type of ROM is read ad written optically. What Is The Difference Among,RAM,ROM,PROM,EPROM? The process of programming a PROM is sometimes called burning the PROM. TECHNICAL BAJRANGI 66,979 views. Initially program storage using integrated circuits was just ROM — read-only memory, that was programmed as a mask at the factory. EPROM- Erasable programmable read only memory is a type of ROM which can be erased and reused. EEPROM- Electrically erasable programmable read only memory is a type of ROM which retains all the stored data even after the power is removed. The data on this non-volatile memory chip can be erased by exposing it to high intensity UV light. To write associate EPROM, its storage cells should stay within the same initial state. It’s memory is written just the once and programmed electrically by the user at the time or when the initial chip fabrication. To write associate EPROM, its storage cells should stay within the same initial state. The difference between a PROM and a ROM (read-only memory) is that a PROM is manufactured as blank memory, whereas a ROM is programmed during the manufacturing process. So RAM and ROM are actually talking about different things. EPROM (Erasable Programmable Read Only Memory) is also the type of ROM is read and written optically. PROM(Programmable Read-Only Memory): EPROM(Erasable and Programmable Read-Only Memory): EEPROM(Electrical Erasable and Programmable Read-Only Memory): PROM is is a type of ROM that can be modified only once by a user. It was meant to fulfil the requirement of a group of ROMs which may contain a selected memory content. EPROM provides reduced storage permanency as compared to PROM as a result of the EPROM is receptive to radio ad electrical noise. look at my pict hhnoon answered . 1 Answers. EPROM stands for erasable programmable read - only memory. Nowadays everyone uses Flash, which you can erase and reprogram easily in-circuit, but it's slow. in the construction of EPROM, MOS transistors are used. EPROM provides reduced storage permanency as compared to PROM as a result of the EPROM is receptive to radiation and electrical noise. EPROM is a type of ROM that can be erased by exposing it to ultra-violet light and can be reprogrammed. Difference between these two lies in the possibility of modification of their contents. DIFFERENCE. RAM computer memory available to the user for creating, loading, or running programs and for the temporary storage and manipulation of data, in which time of access to each item is independent of the storage sequence. ROM, PROM or EPROM are used to store information which must be retained when the power is off, typically they would be used to store the BIOS code.ROM and PROM … RAM vs ROM : Difference between them along with their types - Duration: ... 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