In the computer, there have many components for specific work. From them, the hard drive is the primary storage device which used to save all the necessary data like system applications, files, music, videos and many more. Actually, you can get here what is the difference between RAM and ROM?
Besides the hard drive, on the computer, we also have RAM (Random Access Memory) and ROM (Read-only Memory).in below differences between RAM and ROM has discussed in details.
There are many differences between RAM (random access memory) and ROM (read-only memory)
One (ROM) is able to hold memory without power and another one (RAM) need the power to store memory.
Generally, ROM is for store memory for permanently and RAM is for temporary storage.
What is a RAM (Random Access Memory)?
Random Access Memory (RAM): biggest kind of storage medium after the magnetic hard drive or SSD exists in the computer hardware, which is volatile means it can store information and retain the information with the continuous use of power from a constant source.
It is used to store the programs and data being used by the computers CPU in real time. Data on the ram can be read written and be erased in any given time. Data can simply be evaporated if the power is gone. For this reason, it is not used as a source for permanent data storage system but it is used for real-time data processing for its faster speed of data processing.
Types of RAM: It is mainly two types. They are
- Dynamic RAM
- Static RAM
Dynamic RAM (DRAM): it uses a pair of transistor and capacitor which constitute a DRAM memory cell to store a bit of data.
Static RAM (SRAM): SRAM stores a bit of data by using the state of a six transistor memory cell and it is faster and costlier than DRAM.
What is ROM (Read-only Memory)?
Read-Only Memory (ROM): a nonvolatile storage chip which needs a continuous power supply and loses the information which it processed when the power is off or unavailable. It is developed to support erasing and rewriting of data, but it doesn’t achieve the efficiency level compare to random access memory (RAM).
Read-only memory (ROM) types:
- Mask ROM
Mask ROM: it is a type of ROM where data are written during the manufacturing of the memory chip.
Programmable Read Only Memory (PROM): After the memory chip has been created, the data is written. It is nonvolatile.
Erasable Programmable Read-only Memory (EPROM): by exposing this non-volatile memory chip to high-intensity UV light data can be erased.
Electrically Erasable Programmable Read-Only Memory (EEPROM): Data on this non-volatile memory chip can be erased electrically by using field electron emission (also known as Fowler-Nordheim tunneling).considering the read-write capabilities modern EEPROMs are far more efficient than the others.
Memory chip which is mentioned above types is semiconductor-based ROMs. There also have optical storage media like CD-ROM which also a form of read-only memory.
Difference between ROM and RAM
In computer, RAM chip is used primarily in the process of startup. In the other hand, RAM chip is used in the normal operation of the computer when the operating system loaded.
A RAM chip can store multiple gigabytes (GB) of data ranging from 1 to 256 GB per chip.
A ROM stores a less amount of data compares to the RAM, Usually 64Mega bytes (MB) to 4 gigabytes (GB) per chip.
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Difference between Data and Information that’s store in RAM.
Computers BIOS is an idle example for ROM which stores the needed programming for beginners the initial startup of the computer which is a prom type chip. Computers and other devices have only one type of storage medium which is non-volatile.
ROM chips are also used in different gaming system cartridges. For example, some of them are original Nintendo, Game Boy, Sega Genesis and many more.
Chips like RAM are not only used in computers but also other devices to store the information which is produced quickly by the programs. RAM is the fastest type of memory compared to other types which are allowed to switch quickly between tasks. For example, when a browser used to browse the internet to read the newspaper or any websites blog is loaded in RAM and running from it.
Differences between RAM vs. ROM: What are the differences between RAM vs. ROM?
|RAM vs. differences||RAM||ROM|
|Data||Data is not permanent and can be manipulated or simply erased in any time if the power is cut off||Data is not permanent and can be manipulated or simply erased in any time if the power is cut off|
|speed||This memory is a high speed memory||It is a much slower type memory compare to RAM|
|CPU Interaction||Central processing unit can access the data as the data stored on it||CPU has no access to it. To access in this data, firstly needs to copy the data to the RAM.|
|Size and Capacity||It is larger in size with higher capacity||smaller size with less capacity|
|Usage||Primary memory (i.e. DRAM,DIMM modules),CPU cache(SRAM)|
|Cost||very much costlier||Much cheaper the RAM|
Everything has its pros and cons. same goes for RAM and ROM. Both have their advantages and disadvantages. In one side RAM is costlier and holds a big amount of data and process at a very fast speed but any time the data can be erased if the power is unavailable.
On the other side, ROM is cheaper than the RAM but holds a less amount of data for permanently with slower processing speed.
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