Difference Between EPROM and EEPROM

EPROM and EEPROM: Find the Difference Between EPROM and EEPROM

Both of these are types of ROM or Random Access Memory, but there is a difference between EPROM and EEPROM. But before we get into that, let us know a bit more about ROM. It is a type of non-volatile memory that we can’t modify at all or can modify only a bit. But we can feasibly erase and then reprogram the modern ROM in some ways.

Various modified versions of RAM are present- two of these are EPROM and EEPROM. One can easily erase and reprogram both of these, but the speed of performing these is very less. The process of erasing requires some special equipment. Thus, we can only do it a limited number of times.

There is a basic difference between EPROM and EEPROM. One can erase the data from EPROM using the UV (Ultra Violet) rays. On the other hand, erasing data from EEPROM requires the usage of electric signals. Read ahead to discover more differences between them in a tabular form.

What is EPROM?

The term EPROM is an acronym for Erasable Programmable ROM. It is a type of ROOM that we write and read optically. For writing an associated EPROM, the storage cells it contains must stay in the initial stages. EPROM consists of reduced storage permanency in comparison with PROM. The EPROM, as a result, becomes receptive to electrical noise and unwanted radiation. The construction of EPROM requires the usage of MOS transistors.

What is EEPROM?

The term EPROM is an acronym for Electrically Erasable Programmable ROM. This type of ROM makes use of electricity for erasing the content in EEPROM. The memory in EEPROM might be non-volatile. It is capable of storing a very little amount of data and information used in computer BIOS/ laptop. It acts as a replacement for EPROM as well as PROM.

Difference Between EPROM and EEPROM

Here is a list of the differences between EPROM and EEPROM.

Parameters

EPROM

EEPROM

Basics

We need to use ultraviolet rays to erase the content present in EPROM.

We need to use electrical signals to erase the content present in EEPROM.

Appearance

It consists of transparent windows of quartz crystals at the very top.

It stays encased in a plastic case that is opaque.

Advancement of Technology

It is an older type of technology.

It is a comparatively modern version as compared to EPROM.

Erasing and Reprogramming

One has to remove the EPROM chip from a computer circuit for erasing and programming the laptop/ computer BIOS.

You can easily erase and reprogram an EEPROM chip in a computer circuit for erasing and reprogramming the information contained in the system BIOS.

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