The term memory applies to any electronic component capable of temporarily storing data. This article will explain the different categories of memory, the technical characteristics of memory and the differences between Flash Memory, Read-Only Memory and Random Access Memory.
There are two main categories of memory:
The main characteristics of a memory are:
The ideal memory has a large capacity with restricted access time and cycle time, a high throughput and is non-volatile.
However, fast memory is also the most expensive. This is why memory that uses different technologies are used in a computer, interfaced with each other and organized hierarchically.
The fastest memory is located in small numbers close to the processor. Auxiliary memory, which is not as fast, is used to store information permanently.
What is Random access memory ? It is the system's main memory, meaning it is a space that allows you to temporarily store data when a program is running.
Unlike data storage on an auxiliary memory such as a hard drive, RAM is volatile, meaning that it only stores data as long as it is supplied with electricity. Thus, each time the computer is turned off, all the data in the memory are irremediably erased.
What is read only memory ? This type of memory, also called ROM, is a type of memory that allows you to keep the information contained on it even when the memory is no longer receiving electricity. Basically, this type of memory only has read-only access. However, it is possible to save information in some types of ROM memory.
What is flash memory? It is a compromise between RAM-type memory and ROM memory. Flash memory possesses the non-volatility of ROM memory while providing both read and write access. However, the access times of flash memory is longer than the access times of RAM. You can also use a flash memory card.