Some people are getting confused in the term RAM and ROM. If you are one of them then this article is for you. In this article I am going to explain What is RAM?, What is ROM? and Difference Between RAM and ROM. So let’s get started…
Difference Between RAM and ROM
So, first of all, we are going to discuss What is RAM? then What is ROM? and Then Difference Between RAM and ROM.
What is RAM?
RAM stands for Random Access Memory, This is one type of computer data storage, but it’s short-term that means data in the RAM is available as long as the power on. So the application programs and data which is currently in a use kept in the RAM, so they can be quickly accessed by CPU, When the device is rebooted the OS and other files are reloaded in it. RAM is the main memory of a computer which is much faster than another type of storage such as a hard disk drive (HDD), solid-state drive (SSD). The capacity of RAM I also measured in Megabytes (MB) and Gigabytes (GB), The speed of ram is measured in Megahertz (MHz) and gigahertz (GHz).
For more information about RAM must read our another article Random Access Memory(RAM) Explained!
What is ROM?
ROM stands for Read-only Memory. Like RAM ROM memory cannot be directly accessed by CPU the data first transfer to RAM and the CPU is able to access it. ROM is the non-volatile memory. The data in RAM is present even if the power is off. The capacity of RAM is less than RAM. ROM is used to store the instruction and files that computer required during bootstrapping. I think you guys already know what is Bootstrapping.
There are three types of ROM
PROM: programmable ROM it can be modified only once by the user.
EPROM: Erasable and programmable ROM. the data in this ROM can be erased by using ultraviolet rays.
EEPROM: electrically erasable and programmable ROM. It can be erased and reprogram about 10 thousand times.
Main Difference Between RAM and ROM
- RAM stands for Random Access Memory and ROM stands for Read-only Memory.
- Random Access Memory is readable and writeable but Read-only Memory is only readable.
- RAM is used to store the data that are currently in the use but ROM is used ROM is used to store the instruction and files that the computer required during bootstrapping.
- Random Access Memory is a volatile memory but Read-only Memory is the non-volatile memory.
- Data in the RAM can be modified but the data in the ROM cannot be modified.
- RAM size is 64 MB to 32 GB but ROM is comparatively smaller than that.
- there is two type of RAM static RAM and Dynamic RAM and ROM have three type PROM, EPROM, EEPROM.
- RAM is very expensive memory because of its speed but ROM is comparatively cheaper than RAM.
Must Read: Solid State Hybrid Drive (SSHD) explained!
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