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What is Difference between RAM and ROM

by Naseem Kaloo
difference between ram and rom

Difference between RAM difference between RAM and ROM

Storage and memories are the two main holding areas in a server, notebook, or smartphones, and their interaction is the foundation of a computer processing architecture. Previously, storage and memory refer to two different objects, but they no longer do because “memory” may belong to either one.


Memory is a unit inside your machine that accounts for short-term database access. Many tasks on your machine are perform by accessing data store in its short memory. Formatting a document, loading apps, and surfing the internet are some instances of such processes. The memory usage mounted on your computer determines the speed and output of your device.

If you have a desktop and a file cabinet, the desk reflects the computer’s memories. Items that you will use right away are store on your desk for quick access.


Memory relates to the destination of short-term records, while storage is the part of your device that helps you save and retrieve data on a long-term basis. Space is usually in the shape of a solid-state disk or a hard drive. For an unspecified amount of time, storage holds the programmes, operating system, and archives. Computers must receive notification to and retrieve it from storage devices, so the storage speed decides how quickly the device can boot up, load, and view what you’ve stored.

While the desk reflects the machine’s memories, the file cabinet reflects the machine’s space. It contains objects that must be present but do not require an immediate entry. Many items may be pack due to the capacity of the filing cabinet.

Random Access Memory (RAM)

RAM is an abbreviation for Random Access Memory, and it is the central processing unit’s internal memory in the shape of a hardware interface on a computer’s chipset. When a machine is on, it stores records, programmes and display results.

Moreover, Random access memory is a volatile memory since it cannot indefinitely store instructions and data. When we turn on a monitor, the commands from the hard disc are allocating in Random Access Memory. The Operating System and other programmes need to run a machine among these commands. The Central Processing Unit requires these instructions to complete the task.

RAM is the machine’s fastest and most expensive memory. The processor has the power to read instructions from RAM and send the results to RAM.

It is of 2 types:

  • Static Random Access Memory needs a continuous flow of power to maintain the data stored within it. It is more costly and quicker than DRAM. It acts as the computer’s cache memory.
  • Dynamic Random Access Memory must be a refresh to maintain the data it contains. It is slower and less expensive than static RAM.

Read-Only Memory

ROM is an abbreviation for read-only memory. It is a non-volatile storage that keeps data even though the power is off. ROM is a computer’s main memory, much like RAM. It is referred to as read-only memory since the programmes and data can be viewed but not submitted to.

As a consequence, you cannot reprogram, edit, or erase its records. However, in certain forms of ROM, the data maybe change. Cartridges in gaming consoles, data indefinitely on desktop computers, and other mobile gadgets such as smartphones, laptops, Television, AC, and so on are all examples of Read-Only Memory.

Difference Between RAM and ROM

difference between ram and rom

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Volatile and non Volatile memory

Random Access Memory is volatile memory, which implies that when you reboot or shut down the machine, the data briefly present in the module is not present. Since the data occurs magnetically on transistors, it vanishes when there is no energy transfer. When you request a file or files, it is either from the computer’s hard disc or the internet. Since the data is present in RAM, it is automatically accessible when you turn from one application or website to another. When the machine is off, the memory is clear before the operation can be restart. Users can quickly alter, update, or extend volatile memory.

Read-only memory is a non-volatile memory that implies information that is indefinitely present on a disc. The storage does not use an electric current; instead, it writes data to single cells using binary languages. Non-volatile storage is for non-changing areas, such as the initial boot-up component of the programme or the software instructions that enable the printer to function. Turning off the machine has little impact on ROM. Users cannot alter non-volatile memory.

The important difference between RAM and ROM

  1. RAM is a form of temporary memory space since data only lasts as long as the power is on. On the other hand, ROM is a persistent memory that stores data over a more extended period.
  2. Random-access memory is highly unreliable. However, read-only memory is non-volatile.
  3. RAM has a higher processing speed than ROM.
  4. RAM is the system’s main memory. However, ROM is secondary memory.
  5. RAM has memory space in GB. On the other hand, ROM allows for storage space in megabytes (MB), usually ranging from four to Eight MB per chip.
  6. RAM store information on transistors and hence needs a constant power supply. However, data stored in ROM is unaffected by power outages.
  7. The user can modify the data present in RAM. The data in ROM, on the other hand, cannot be modified by the user.
  8. RAM allows the user to read and write data, while ROM data is pre-defined and can only be accessed by the user.
  9. The processor has direct access to the information in RAM. Even so, the data in ROM does not provide immediate access to the CPU.
  10. The expense of random access memory is greater than that of ROM.

Hope you have understood the difference Between RAM and ROM:

Random Access Memory and Read Only Memory are both types of memory that are necessary for a machine. ROM is necessary for a device to boot up. Random Access Memory is necessary for Central Processing Units operation.

Key Takeaways

  • Computer memory is the physical space wherever data to be interpreted and execution instructions are placed.
  • There are two kinds of memories: 1) primary memory and 2) secondary memory.
  • The main storage of a computing device is its reference memory. Since main storage is a computer’s internal memory, extracting data from it is quicker.
  • Secondary memory refers to all secondary storage systems capable of storing large amounts of data.
  • Without primary memory, the machine cannot work. If the power is off, you will lose records.
  • And when the machine is off, data is kept in Secondary Memory indefinitely.
  • Main memory in a computer is costly and comes in a small capacity.
  • The expense of random access memory is greater than that of ROM.
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