Example of RAM: RAM chips like 2GB, 4GB, 8GB etc of different companies like Corsair, Kingston etc. To write data onto a PROM chip, you need a special device called a PROM programmer or PROM burner. Difference between PROM and EPROM: PROM is not reusable, but the EPROM is reusable multiple times. Key Differences Between EPROM and EEPROM. The major difference between EEPROM and Flash memory is that when Flash memory’s contents are erased, the entire device is erased, in contrast to EEPROM, where one can erase the desired byte. EPROM (Erasable Programmable Read-Only Memory) is a kind of ROM memory with erasable function and can be reprogrammed after erasing. ROM, EPROM, & EEPROM Technology 9-8 INTEGRATED CIRCUIT ENGINEERING CORPORATION These factors, plus the fact that an EPROM is encased in a ceramic package with a quartz window, make the EPROM average selling price three to five times the price of the mask ROM. (Electrically Erasable Programmable Read-Only Memory) . EEPROM is a type of non-volatile primary memory and modified version of EPROM (Erasable Programmable Read-Only Memory) which uses electrical signals to erase and program the contents rather than UV signals which was used previously in EPROM. In the EPROM, MOS transistors are used. PROM is inexpensive, while EPROM is processed can be reversed. EEPROM (Electrically Erasable Programmable Read-Only Memory), a memory chip that does not lose data after power failure. The programming process of PROM is called PROM … Figure 9-9 shows the main feature sizes of 1Mbit EPROM analyzed by ICEÕs laboratory. 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. Comparison between prom pla and pal in tabular form 2 See answers Shaizakincsem Shaizakincsem PLA(Programmable Logic Array) and PAL(Programmable Array Logic) are Programmable Logic Devices which had planes and additionally doors interconnected to each other and which could be modified. The difference between PROM and ROM (read-only memory) is that PROM is blank memory, while ROM is processed at the time of the manufacturing process. The process of programming a PROM is sometimes called burning the PROM. 10 Differences between RAM and ROM in Tabular form ... EPROM, (Erasable Programmable Read-only Memory) EEPROM. EPROM is a type of ROM that can be erased by exposing it to ultra-violet light and can be reprogrammed. EPROM provides reduced storage permanency as compared to PROM as a result of the EPROM is receptive to radio ad electrical noise. EEPROM stands for Electrically Erasable Programmable Read-Only Memory. So let’s sort out the acronyms first: * ROM - Read-Only-Memory - you can read from it but you can’t ever change it. 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. Before writing, the contents inside must be irradiated with ultraviolet rays on the transparent window on its IC card to clear it. Difference Between EEPROM and EPROM • Categorized under Hardware , Technology | Difference Between EEPROM and EPROM EPROM (Erasable Programmable Read Only Memory) was a great invention that allowed hardware programmers to make changes to their code without buying new chips. The key difference between EPROM and EEPROM lies in the method of erasing the content inside them, EPROM’s content is erased by exposing the EPROM chip to the UV lights whereas, the EEPROM’s content is erased by applying the electric signal to the chip. 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