What is the difference between RAM and ROM? Details & More

RAM means random access memory and ROM has read-only memory. Both computers are present as their internal memory. They differ in usage, storage capacity, body size, and much more. Random-access memory is volatile memory that temporarily stores the files you are working on.

Many differences between Random-access memory and Read-only memory can be written based on size, price, and many other things but you should know what is the real difference between RAM and ROM. Memory is the most important part of a computer system because it cannot perform basic tasks without a computer. Early memory contains RAM and ROM The difference between ROM vs.


ROM will help you to understand the basics better and know their comparison better. In this article, we will go through computer memory. The initial memory, the type of memory in the computer, the difference between RAM and ROM, what stands for, and other details.

What is the difference between RAM and ROM?

[one_third_first]Serial No[/one_third_first][one_third]RAM[/one_third][one_third_last]ROM[/one_third_last]

[one_third_first]1[/one_third_first][one_third]It is a Volatile Memory[/one_third][one_third_last]It is a Non-Volatile Memory[/one_third_last][one_third_first]2[/one_third_first][one_third]Data on RAM can be read as well as written[/one_third][one_third_last]ROM is read-only memory where the data is only read[/one_third_last][one_third_first]3[/one_third_first][one_third]It is a high-speed memory[/one_third][one_third_last]It is much slower than RAM[/one_third_last][one_third_first]4[/one_third_first][one_third]The processor uses RAM during execution of programs[/one_third][one_third_last]The processor uses ROM only at starting time of the execution of programs[/one_third_last][one_third_first]5[/one_third_first][one_third]RAM is used to store data that is currently processed by the CPU temporarily[/one_third][one_third_last]ROM is used to store information that is required during the bootstrap of the computer[/one_third_last][one_third_first]6[/one_third_first][one_third]Random Access memory is more costly than the Read Only Memory[/one_third][one_third_last]Read Only Memory is less costly than Random Access Memory[/one_third_last][one_third_first]7[/one_third_first][one_third]The CPU can access the data that is stored on it[/one_third][one_third_last]The CPU cannot access the data that is stored on it unless it is stored in the RAM[/one_third_last][one_third_first]8[/one_third_first][one_third]RAM is larger than ROM. It comes in two sizes i.e desktop computers and laptops. A desktop RAM is 5.5 inches in length and 1 inch in width[/one_third][one_third_last]The size of ROM ranges from an inch to multiple inches in length and width based on its use. It has a lesser capacity than RAM[/one_third_last][one_third_first]9[/one_third_first][one_third]The CPU can modify the data of the RAM[/one_third][one_third_last]The CPU cannot modify the data of the ROM[/one_third_last][one_third_first]10[/one_third_first][one_third]The data stored in the RAM is in real-time to run the computer[/one_third][one_third_last]The data stored in the ROM is used by the CPU only when it is transferred to RAM[/one_third_last]

[thrive_text_block color=”light” headline=”You Can”] If you have any more questions regarding RAM or ROM, drop in your comment in the section below.[/thrive_text_block]

What is Random Access Memory (RAM)?

There are mainly two types of RAM

  1. SRAM or Static Random Access Memory
  2. DRAM or Dynamic Random Access Memory

Random Access Memory (RAM) stores programs and data that the CPU uses in real-time. Data can be read, written, and deleted at any time. Since the data is stored electrically in the transistor, the data disappears when there is no electric current. Random-access memory is a volatile memory, a hardware component where current usage data is stored. The time taken to perform a particular task is stored in the Random-access memory. What is meant by restless memory? This means that when the computer is turned on, the instructions on the hard disk are kept in Random-access memory.

When the computer is turned off, the memory is cleared until the process starts again. These guidelines include the operating system (OS) and other programs needed to run the computer. It is stored in RAM without temporary data until the computer is turned on. RAM will lose all data as soon as the computer shuts down.

RAM is measured in megabytes and speed is measured in nanoseconds and RAM chips can read data faster than ROMs. When applications for software, records, and files are opened, they are copied from the second storage to the ROM. These will remain in RAM until we close the files or applications. RAM chips are used on computers and other devices to quickly store temporary data produced by programs.

What is Random Access Memory (ROM)?

There are four types of ROM: RAM and ROM

  1. Programmable ROM: Data is written on the memory chip after it is created.
  2. Erasable Programmable ROM: Data on the non-volatile memory chip can be removed by exposing it to high-intensity UV light.
  3. Electrically Erasable Programmable ROM: Data on the non-volatile memory chip can be electrically removed by field electron emission.
  4. Mask ROM: Data is written during the manufacturing of the memory chip.

ROM is a memory that stores pre-recorded data. Memory does not rely on any electrical current to store data. ROM data is stored even after the computer is turned off. It is a non-volatile memory, stores data permanently despite power off. Programs and data stored in ROM can be read but not written. We already know that the CPU first reads an instruction or program to perform a task and begins to execute it.

We all know that our computer has a ‘C Disk’. The Disk ‘C’ is the part of the hard disk. But our computer use that ‘C’ disk as ROM. So the data that the CPU reads from is called read-only memory. This means that the ROM fills in the manufacturer’s programs but cannot be re-programmed, rewritten, or deleted after it has been created. However, in some ROMs, you can change the stored data.

Some examples of ROM are data stored permanently on video game console cartridges, personal computers, smartphones, tablets, TVs, ACs, etc. For this reason, we see in our phone in the ‘About phone’ section 2GB, 4GB RAM, etc, and 8GB, 16GB ROM, etc. But RAM is always different. The only way to start this process for computers and other devices is to use a non-volatile storage medium. ROM chips were also used in cartridges of gaming systems like the original Nintendo, Gameboy, Sega Genesis, and others.

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