All PCs need several types of memory working collaboratively. We have storage memory, but we also have one RAM and ROM, two types of memory that are sometimes confusing and, for this reason, today we will tell you what's your difference, their types and which of each is used.
Of course you are already very clear about what RAM is, as it is one of the most commonly mentioned components of PC Hardware, and can be purchased at any computer store. However, even though you may not know it, computers also have ROM memory, and are essential for its functionality. Let's take a look what's one of these types of memory and what it's designed for
RAM memory
RAM is named in English Memory for random access, or random access memory. Its name is precise because its content is constantly changing depending on what the PC needs – and it's controlled by the processor. It is used to store applications and data that is always used, so that the processor can access them quickly, in real time.
This edition memory is flexible, meaning that any data stored on it disappears when we turn off the PC. Among the available RAM types, we can currently find two types:
- CITY: It means Dynamic RAM, and it is the most widely used on PCs and, in fact, on almost any device including smartphones. This type of memory is made up of capacitors that need a controller to store the data stored on it many times per second so it doesn't get lost.
- ISRAM: Static RAM means, and as the name implies it stands. In this case the data is stored until the power transmission is determined unless the controller keeps updating the data; It is faster and consumes less power than DRAM, but less use because it is more expensive to perform and allows for very low power (power).
ROM memory
The ROM memory is named after the English dictionary Read Only Memory, or read-only memory. The main difference between RAM and ROM is that of ROM it is not a variable, that is, the database is saved even when we turn off the PC. This type of memory has significantly lower memory capacity than RAM and is much slower.
At first, the ROM was read-only, but for a long time it was just a constant memory where it could also be written … in some tangible ways. In ROM memory, for example, the BIOS (capable of updating) is stored, along with the firmware of the devices. The following are the main types of ROM memory used today:
- Mask ROMA: This type of memory is the one used during the device operation, and when it was written the information could not be changed.
- THE PROMISE: It means "Editable ROM", and as its name indicates the data it stores can be edited (unlike the Mask ROM, after the execution process). With exceptions to the text, this data cannot be changed.
- EPROM: It means "electrically programmed ROM", and is similar to PROM but allows data to be removed under certain conditions (actually exposing it to ultraviolet light).
- EEPROM: Means "Electric ROM With Electric Structure", and is the most widely used type of ROM because it allows data to be deleted and to be rewritten for an unlimited number of times.
