Difference between EPROM and EEPROM
Both are kinds of ROM (Random Access Memory), but there are some distinctions between EPROM and EEPROM memory. But before going about the EPROM and EEPROM, let a little more about ROM. It is a kind of non-volatile memory that you cannot modify or only partially manipulate. However, you may erase and reprogram the modern ROM in different ways. EPROM and EEPROM are two customized forms of RAM. Both can be easily erased and reprogrammed, but the speed with which they can be done is rather slow. The erasing process needs some specific equipment. So, you may only do it a specific number of times.
In this article, you will learn about the difference between EPROM and EEPROM. But before discussing the differences, you must know about EPROM and EEPROM.
What is EPROM?
EPROM stands for "Erasable Programmable Read-Only Memory". It was developed by Dov Frohman at Intel in 1971. It is a non-volatile memory that keeps data even after the power is switched off. It contains the computer BIOS utilized during the system's start. It is a read-only memory that contents may be removed by exposing ultraviolet light on the EPROM chip. It may be recognized easily because this chip has a transparent quartz crystal window lid on top.
It is a collection of floating gate transistors. Each transistor is individually programmed using an electrical device that provides a greater voltage than the standard voltage used in digital circuits. Once programmed, the EPROM preserves its data for at least 10 years, and many of them retain data for 35 or more years. The adhesive label hides the quartz crystal window slits to protect them from the contact of camera flashes or UV lights.
EPROM may only be removed a specific number of times. After several thousand erasures, the chip becomes unreliable because the damage is accumulated in the silicon dioxide around the gates during each erasure.
Advantages and Disadvantages of EPROM
There are various advantages and disadvantages of EPROM. Some main advantages and disadvantages of EPROM are as follows:
What is EEPROM?
EEPROM stands for "Electrically Erasable Programmable Read-Only Memory". It uses electricity to remove the content. It is a non-volatile ROM chip that is utilized in computer systems and other electronic devices to store a small quantity of data. A single data byte may be completely erased and reprogrammed using EEPROM, not just some parts of it.
It was developed by George Perlegos in 1978 at Intel. But Eli Harari developed it for the first time in 1977 at Hughes Aircraft. It is utilized as a replacement for PROM and EPROM. Removing the EEPROM chip from the computer system is not required to modify it. EEPROM executes read and write cycles very slowly than the RAM's read and write cycles. The erase and write operations are done byte by byte.
Advantages and Disadvantages of EEPROM
There are various advantages and disadvantages of EEPROM. Some main advantages and disadvantages of EEPROM are as follows:
Main Differences between the EPROM and EEPROM
Here, you will learn the main differences between EPROM and EEPROM. Some main differences between EPROM and EEPROM are as follows:
Head-to-head comparison between EPROM and EEPROM
Here, you will learn the head-to-head comparisons between EPROM and EEPROM. The main differences between EPROM and EEPROM are as follows:
EPROM and EEPROM were designed to solve the difficulties associated with ROM and PROM. Using EPROM and EEPROM to remove and reprogram data provides chip reusability at a much faster and lower cost, providing an advantage over the limited benefits of ROM and PROM. EPROM is a modified version of PROM and ROM. In contrast, EEPROM is an even more advanced version of EPROM.