ROM: What Is It And Do You Need It?

Personal Computer or PC has been a necessity, and the number of users has rapidly increased because of online classes and work from home setups. Users should be familiar with the basics of computers to make a purchase based on your needs. In this article, you will know everything about ROM and why it is essential for your PC.

What Do You Mean by ROM?

It is essential to know what does ROM mean. ROM stands for “Read-Only Memory” and is also called firmware. It is a medium of storage that contains permanent data and has programming information that allows a startup device when the computer is switched on. ROM can also allow a computer to run different games and serves an excellent purpose for storage.

Most computers integrate a limited amount of ROM for hosting firmware startups; this program guides the boot phase of the device containing a sequence of codes. It involves hardware diagnosis and loading of the operating system into the RAM or Random Access Memory. ROM is, therefore, also used for firmware updates.

What is Erasable Programmable ROM or EPROM?

This type of memory runs its programming through exposure to UV (UltraViolet) light. It uses high voltage for twenty minutes. It is a read-only memory type which can be easily erased and reusable.

What is Electrically-Erasable Programmable ROM or EEPROM?

This type of non-volatile memory is typically used in controlling BIOS (Basic Input and Output System), which are linked in a microcontroller for remote keyless systems, smart cards, and other electronic devices. This type of ROM can usually store small data, but the information will not be gone once the PC is turned off.

What Are The Uses of ROM?

Video game consoles require you to use ROM; this makes it possible for a computer to run numerous games and store them in optical storage. Like the use of different CDs like CD-RW and CD-ROM. It is also present in peripheral devices like laser printers and calculators.

ROM also acts as a data storage form of phones. It ensures that the data is not deleted when you turn off your phone. The reprogramming process is relatively slow because it is a read-only memory. Random access to separate storage sites are not allowed; this is similar to the hard drive of a device that can hold files.

These files contain, among other items, images, songs, videos, and software applications. Most smartphones currently have a 16 GB, 32 GB, 64 GB, 128 GB, or 256 GB ROM. But it is also essential to know that ROM is known as storage on smartphones, not a read-only memory.

A smartphone without an SD (Secure Digital) card uses its internal storage equivalent to a PC’s ROM and is used as a digital information storage site. However, you have options to use both the SD card and your phone’s internal storage or use either of the two as backup storage.

Why Do You Need a Read-Only Memory (ROM)?

ROM includes the necessary instructions for communication between the various hardware components of your PC. It plays an essential role in the BIOS to be operated and stored. However, it also plays one crucial part: writing and reading to peripheral devices for primary management data and maintaining applications for standard utility processes.

On the other hand, you can quickly test software with the use of ROM. Moreover, it does not need frequent refreshing because of its nature. The stored data in ROM can always be identified and verified. It is a reliable storage option because it is non-volatile, not easily altered, and affordable compared to other storage options.


Always remember that a ROM chip is often used for the startup of a device. Secure and efficient information storage has become one of the most critical items for PC users in the modern century. Make a practical purchase for your PC to have efficient learning or working experience at home.