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  • Category: Hardware

    What is the difference between RAM and ROM?

    Confused about what is RAM and what is ROM in a computer system? Understand the two concepts with clarity from our experts and know what function each does.

    I would like to know the difference between RAM and ROM in a computer system and its functional utility.
  • Answers

    4 Answers found.
  • Random Access Memory is a hardware device in the computing system. The data will remain as long as the computer is on. RAM will be there in Desktops, Laptops and Phones.
    Read-only Memory is a built-in memory where the data can only be read. We can't write on it. Latest generation smartphones will have these ROMs.
    A ROM is a non-volatile storage medium. It does not require a constant source of power to keep the information stored on it. A RAM is a volatile storage medium. It loses information it is holding when the power is turned off.
    A ROM chip is used in the startup process of a computer. A RAM is used in the normal operations of a computer.
    A RAM can be used to store multiple GB (gigabytes) of data, ranging from 1 to 256 GB. A ROM stores several MB (megabytes) of data, typically 4 MB or 8 MB.

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  • RAM stands Random Access Memory and ROM stands for Read Only Memory. As name for ROM , it only used for Reading stored data. RAM is used for bot reading and writing.
    RAM is volatile which needs power and erases data once we switch off system. RAM directly relates to system operation to keep system fast. RAM uses cache and clears it once we switch it off, which means it just stores data temporarily. RAM as its directly operation with system is very fast compared to ROM and needs more power.
    ROM is used for storing data permanently and it doesn't need power to be on to store data. However we can not write data on it as on RAM, as its Read -Only. If we compare with RAM it is fast but not as RAM and needs less power.
    CPU can write down data or can access/operate data on RAM directly but not in ROM. If we consider cost, RAM is costly than ROM and RAM would be available in large size if we go for higher capacity compared to ROM.

  • RAM- Random Access Memory. It works as temporary memory storage system. The memory gets reset involuntarily once the device or PC where RAM is being used is shut down.
    ROM- Read Only Memory- It works as permanent memory storage system. The memory used retains permanently even after the device or PC where ROM is being used is shut down. Only user can voluntarily reset the memory system.

  • In a typical computer, we have both Ram and ROM. Where RAM stands for "Random Access Memory" and ROM is "Read Only Memory".

    Computer memory has two types.
    a) Volatile memory – memory stored on a temporary basis, if you restart or shut down the computer, it will get erased. Volatile memory uses transistors to write on. If the supply of electric current stops, data will be removed. RAM comes under this type of memory, it mainly helps to retrieve the data and speeds up the process, as it stores the most recent data, it retrieves the information like recent files, images, websites, searches, etc. this type of memory can be easily expanded or modified by the user. The maximum capacity of RAM is around 64 GB. A single RAM chip usually comes like 4GB, 8GB, and 16GB.

    b) Non-volatile memory – unless you manually deleted it, memory will reside forever. This kind is independent of power supply and uses binary codes to store the data. Hard disk and SSD are ROMs and are the best examples of non-volatile memory. In addition, firmware and booting software come under this memory type. ROMs usually come in 500GB, 1TB, and so on.

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