What is the Full Form of PROM?

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PROM Full Form

The Full Form of PROM is Programmable Read-Only Memory. It is a type of non-volatile computer memory. Additionally, in this type, once the data is written it cannot be erased. Moreover, PROM is used to store programmes and firmware for digital devices and microcontrollers. Read on to learn more about PROM Full Form, its uses, applications and types.

What are the Uses of PROM?

Furthermore, the uses of PROM are as follows:

  • One of the most prevalent applications of PROM chips is to store important data.
    • This stored data cannot be modified.
    • In addition, it is used in medical systems or security systems. 
  • One can program PROM using special devices such as a PROM burner or PROM programmer.
  • PROMs are available in a wide range of shapes and sizes. It is used suitably depending on the type of use.
  • They are either through-hole or surface-mount devices. They are usually made of silicon and other materials such as glass and ceramic.

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What are the Applications of PROM?

The applications of PROM are as follows:

  • They are used in Industrial Electronics such as PLCs (Programmable Logic Controllers) and HMI (Human-Machine Interfaces) for storing control programs and configurations.
  • They are found in digital cameras, DVD players, and personal computers for storing firmware, calibration data, and boot sequences.
  • As microcontrollers PROM stores programs, firmware, lookup tables, and constant values for efficient operation.
  • In the automotive industry, they are used in ECUs (Electronic Control Units) for storing engine control programs, transmission settings, and other vehicle-specific data.
  • In the field of medicine, their usage is in pacemakers and defibrillators to store operating instructions and patient-specific data.
  • Lastly, alarm systems and door locks store access codes, fingerprint templates, and security protocols via PROM.

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What are the Types of PROM?

Additionally, here are the types of PROM:

  • EEPROM: It is an electronically erasable PROM that allows the user to erase and reprogram using an electrical signal.
    • This sets a good example of the difference between non-volatile and volatile memory.
  • EPROM: Erasable PROM is a type of PROm that can be erased and reprogrammed using ultraviolet light.
  • Flash EEPROM: Flash electronically erasable PROM allows the user to erase and reprogram in blocks instead of one byte at a time.
    • Moreover, this justifies the name of Flash EEPROM as it makes it faster to erase and program better than regular EEPROMs.
  • APROM: Addressable PROM, is programmed without the use of any special device like a PROM programmer.
    • It stores data in an array of cells.
    • In addition, one can address these cells individually.
  • MPROM: Masked PROM is programmed during its manufacturing process. One cannot erase or reprogram it.

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