We could say that the computer memory is one of the most important elements for everything to work properly. Indeed, without this vital component, the computer cannot even boot, this indicating the importance of RAM in the structure of the computer. The word “Memory” is a generic term used to designate the parts of the computer or peripheral devices where all data and programs are stored.
In this article we will learn a little more in depth the types of memory that exist and what their relationship is with the computer.
Regarding exclusively to the computer, inside the case, and coupled to the motherboard, we can find two types of memories:
RAM (Random Access Memory)
The RAM is a type of temporary storage memory that stores programs and data being processed, only during processing stage. It is a volatile memory, data stored only stay in it while the computer is turned on. At the time the PC is turned off, all the data are lost.
There are some concepts that must be known to make it easier to understand the RAM memory of modern computers, here the most important:
- The RAM is used for temporary storage of data or instructions.
- When writing a text on a computer, the information is stored in RAM, as well as the input data.
- The RAM memory is also known as memory read and write since in this type of memory can be read or write information.
- The RAM is essential for good performance of our PC.
ROM (Read Only Memory)
This type of memory is used to store permanent applications or data, or information that rarely will be modified. The information is usually stored in the storage chip at the time of manufacture, and its main characteristic is that its contents cannot be altered by user programs or applications. For this reason it is a read-only memory.
The ROM is basically a chip that containing control instructions and it cannot be altered by the user. Thus the ROM is hardware and software at the same time (this firmware name is given).
The firmware instructions are stored in a memory, typically read / write, which establishes the lowest level logic that controls the electronic circuits of a device of any kind.
In short, the information stored in ROM is non-volatile, that is, it is not lost when the computer is turned off. RAM is volatile, and the stored information is lost when the machine is turned off.