Difference between EPROM and EEPROM

The main key difference between EPROM and EEPROM is that the content of EPROM is erased by using UV rays, while the content of EPROM is erased by using electric signals. So here this article gives the main key difference between EPROM and EEPROM to better understand this topic.

Definition of EPROM

EPROM stands for erasable programmable read-only memory, it is the type of ROM that is read ad written optically. To write associate EPROM, its storage cells should stay within the same initial state. EPROM provides reduced storage permanency as compared to PROM as a result of the EPROM is receptive to radio ad electrical noise. In the  EPROM, MOS transistors is used.

Definition of EEPROM

EEPROM stands for electrically erasable programmable read-only memory, it is electric signal is used to erase the EEPROM contents. EEPROM may be nonvolatile memory that retains its content notwithstanding the ability is shifted. It stores the little quantity of information used for laptop or computer BIOS. It absolutely was a replacement for the  PROM as well as EPROM. 

Difference between EPROM and EEPROM:

  • EPROM stands for erasable programmable read-only memory, EPROM stands for erasable programmable read-only memory
  • EPROM can be easily recognized by its appearance it has a transparent quartz crystal window lid at the top of the chip for exposure to UV light, while EEPROM  is totally erased inside an opaque plastic case.
  • EPROM was the first re-programmable ROM whereas, the EEPROM is the replacement and modem version of EPROM.
  • The erase reprogram the EPROM the chip has to e removed and taken out the computer, while on the other hand EEPROM chip is erased and reprogrammed in the circuit of the computer itself.
  • EPROM content is erased by exposing the EPROM chip to the UV lights whereas the EEPROM content is erased by applying the electric signal to the chip.
  • EPROM includes a rock crystal window at the top, EEPROM area unit wholly sheathed in an opaque plastic case.
  • The transistor used in EPROM consumes 12.5 volt, The transistor used in EEPROM consumes 5 volts.
  • EPROM chip has got to be off from the computer circuit to erase and reprogram the computer BIOS, EEPROM chip will be erased and reprogrammed within the electrical circuit to erase and reprogram the content of the computer BIOS.
  • EPROM is a modern version of PROM, EEPROM is the modem version of EPROM.
  • EPROM relative size of cell EPROM is one, while in The relative of cell in EEPROM is 3.
  • Both EPROM and EEPROM is external programming.
  • EPROM, hot electron injection programming technique is used, EEPROM tunnel effect is used as a programming technique.
  • EPROM an erasure consumes 15 to 20 minutes for erasing contents, While in EEPROM an erasure consumes 5 millisecond time for erasing contents.
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