What are RAM and ROM? How are they alike? How are they different? What are PROM, EPROM, EEPROM?

Question :

What are RAM and ROM? How are they alike? How are they different? What are PROM, EPROM, EEPROM?

A ROM chip is a non-volatile storage medium, which means it does not require a constant source of power to retain the information stored on it. A RAM chip is volatile, which means it loses any information it is holding when the power is turned off. Both of them are known as primary memory as they can directly work with CPU.

  • Read Only Memory (ROM)
  • Programmable Read Only Memory (PROM)
  • Erasable Programmable Read Only Memory (EPROM)
  • Electrically Erasable Programmable Read Only Memory (EEPROM)


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