ROMROM is a computer term that means Read Only Memory (“Memory of only reading”). It’s about a storage medium that use the computers and other electronic equipment.

The data saved in ROM cannot be modified by the common user. This type of memory is used to store the firmware (the software linked to specific hardware) and other data essential for the operation of the computer.

There are various kinds of ROM. The oldest are the MROM (that they store data permanent and unchangeable), while other more modern are the EPROM and the Flash EEPROM, which can be rewritten and programmed.

The first computers had their OS stored in ROM. For updates, it was necessary to replace the ROM chip with a new one. Technology has advanced considerably since then and in today’s computers only a few programs are stored in ROM, while the majority are located on hard drives or Flash-type memory, among other technologies.

It should be noted that certain video game consoles use ROM memories in cartridges, as is the case with games of Sega Mega Drive, Super nintendo or Game boy, for instance. The ROM only works when the cartridge is inserted in the corresponding space and proceeds to the reading of the data. When removing the cartridge, the information is no longer accessible.

In the case of computers, ROM is still used to store data since they offer higher speed than hard drives. On the other hand, it is impossible to read a program that requires the execution of a disk from the disk itself and this is one of the reasons why the BIOS of computers is housed in ROM memory.

Differences with RAM

ROMFrom the nomenclature, there are clear differences between ROM (Read Only) and RAM (Random Access). RAM memory is better known by users, since it is usually part of the technical specifications of computers, video game consoles, mobile phones and tablet PCs, among others. devices, and it is usually associated with the strength of the team, although this is not correct.

The meaning of the word “random” in the name of RAM refers to the fact that each time it is used, the data is stored in random cells, and the access time to each of them does not depend on its location. physical level within the card since, unlike a hard disk, instead of going through it until it reaches the point sought, it is addressed as if it were a Cartesian table.

RAM, which is also known as temporary or volatile, presents the possibility of being constantly rewritten and read; in fact, it is one of its essential features, the task for which it was created. In it the programs that the user wants to run, including the operating system itself, trying not to assign the same space to two applications simultaneously.

A characteristic that can be considered as a weak point is that when the power supply is cut, its content disappears. Hence the need for a permanent storage medium, where applications and personal documents can be stored. The ROM memory was one of the answers to these requirements, and it was designed in such a way that it had enough information to start the computer, control the devices and connected components, load and run the operating system and other functions. , which make up the so-called BIOS.

Taking into account all the features just mentioned and adding them to the impossibility of writing freely in the ROM memory, it is clear that despite the fact that their names differ only by one letter, the RAM and ROM technologies assume very different roles.