Difference Between RAM And ROM

RAM and ROM are two commonly used terms in different types of computers. However, many people are perplexed whether these words are related in any way. In this article, we will look at the difference between RAM and ROM.

Before understanding the difference between RAM and ROM, let’s first understand computer memory. So, what exactly is computer memory? Computer memory is simply the computer’s brain, where data and information are saved for easy retrieval. In simple terms, computer memory is the storage space on a computer that temporarily or permanently stores data or programs.

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Table of Content

• Difference between RAM and ROM
• What is a RAM
• Application of RAM
• What is ROM?
• Application of ROM
• Conclusion

Difference between RAM and ROM 

To understand the difference between RAM and ROM in a better way, let’s go through the differences in a tabular format:

What is RAM?

RAM definition: RAM, or random access memory, is a computer’s short-term memory that stores the data the processor is currently processing. 

RAM is a temporary memory bank in which your computer stores data you need to access quickly. It keeps data accessible so your processor can find it quickly without having to access long-term storage to finish immediate processing tasks. There are mainly two types of RAM: Static and Dynamic.

• Static RAM: Static RAM is a type of RAM that uses the state of a six-transistor memory cell to store data. Static RAM is primarily used as a processor cache memory (CPU).
• Dynamic RAM: Dynamic RAM is a type of RAM that lets you store every bit of information in an integrated circuit’s capacitor. Dynamic RAM is a computer memory common in many modern desktop computers.

Application of RAM

There are various applications of RAM. Some of those applications are:

1. Reading files
2. Temporary storage
3. Loading applications

What is ROM?

ROM definition: A ROM or Read-only Memory is a storage medium that permanently stores data on personal computers and other electronic devices.

ROM is a non-volatile memory that retains information even when the power is turned off. It also includes the programming required to start a PC, which is required for boot-up. There are mainly four types of ROM: MROM, PROM, EPROM, and EEPROM.

• PROM: PROM, or programmable read-only memory, is a type of ROM that the user can program. In this ROM, the data and instructions cannot be changed once programmed.
• EPROM: EPROM or Erasable read-only memory is a type of ROM that can be reprogrammed in programmable read-only memory. Expose it to ultraviolet light to erase the data. To reprogram it, first, erase all previous data.
• EEPROM: Electrically erasable programmable read-only memory, is a type of ROM in which data can be erased without using ultraviolet light by applying an electric field. 
• MROM: MROM, or Mask read-only memory, is a type of read-only memory masked off during manufacturing.

Applications of ROM

There are various applications of ROM. Some of those applications are:

• ROM stores data and update firmware software for the computer.
• It allows the computer to boot up and load its operating system.
• ROM performs large input/output (I/O) tasks and protects programs or software instructions.

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Conclusion

The primary distinction between RAM and ROM is that RAM is random access memory, whereas ROM is read-only memory. RAM can both read and write operations, whereas ROM can only perform read operations.

Now that you understand the difference between RAM and ROM, you can use these computer memories more effectively.