RAM, or ‘random access memory,’ can be defined as a type of memory where the data is stored in a computer and can be accessed randomly in contrast to other electronic data that has to be accessed in a fixed order. A videocassette or tape can only be accessed in a fixed arrangement according to the revolutions of the electromagnetic tape. RAM can also be defined as a type of memory that is not sequential in nature and can be accessed in any manner, even while the computer is on.
All the storage locations in RAM are equally accessible at the same time. However, there is another type of memory called ROM, or ‘read only memory,’ which is also randomly accessible but can only be read and not changed. This is not true with RAM since it can be accessed and changed to suit the requirements of the user.
Another important feature of RAM is that accessibility does not affect the speed of the system itself. Random access memory is the amount of data that the computer can process and store temporarily. It can be lost if the power is turned off before saving the data to the hard drive. There are two types of RAM, namely static RAM and dynamic RAM. Dynamic RAM is the most common type of RAM in the market and is widely used.
The dynamic RAM chip is made up of a millions of tiny capacitors and transistors that have small bits of data stored in them. The memory controller automatically refreshes this RAM constantly so that the information in the capacitor is not lost. The capacitor, which acts as storage area for information, has a permanent leak, thus the need for continuous refreshment and, consequently, this is how it earns the name ‘dynamic.’ Static RAM is another type of memory that uses completely different technology and does not need constant refreshing.
RAM differs according to its type, make, advancements, and upgrades as and when they occur, but the basic definition mentioned above remains the same.
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