So RAM and ROM are actually talking about different things. It’s memory is written just the once and programmed electrically by the user at the time or when the initial chip fabrication. It was meant to fulfil the requirement of a group of ROMs which may contain a selected memory content. ROM stands for read only memory. TECHNICAL BAJRANGI 66,979 views. look at my pict hhnoon answered . EPROM (Erasable Programmable Read Only Memory) is also the type of ROM is read and written optically. As opposed to RAM (random access memory), which nowadays is volatile (loses data with the power off), but used to be non-voltile (magnetic core memory). EEPROM- Electrically erasable programmable read only memory is a type of ROM which retains all the stored data even after the power is removed. DIFFERENCE. 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. 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 … in the construction of EPROM, MOS transistors are used. Difference between these two lies in the possibility of modification of their contents. 1 Answers. The data on this non-volatile memory chip can be erased by exposing it to high intensity UV light. RAM vs ROM : Difference between them along with their types - Duration: ... TYPES OF ROM AND THEIR DIFFERENCE EXPLAIN IN HINDI - PROM,EPROM,EEPROM - Duration: 4:01. Initially program storage using integrated circuits was just ROM — read-only memory, that was programmed as a mask at the factory. EPROM provides reduced storage permanency as compared to PROM as a result of the EPROM is receptive to radiation and electrical noise. EPROM- Erasable programmable read only memory is a type of ROM which can be erased and reused. 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. To write associate EPROM, its storage cells should stay within the same initial state. To write data onto a PROM chip, you need a special device called a PROM programmer or PROM burner. To write associate EPROM, its storage cells should stay within the same initial state. EPROM is a type of ROM that can be erased by exposing it to ultra-violet light and can be reprogrammed. What Is The Difference Among,RAM,ROM,PROM,EPROM? EPROM provides reduced storage permanency as compared to PROM as a result of the EPROM is receptive to radio ad electrical noise. PROM stands for Programmable Read Only Memory is the type of ROM is written only. The process of programming a PROM is sometimes called burning the PROM. EPROM stands for erasable programmable read-only memory, it is the type of ROM is read ad written optically. 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