RAM Random access memory
The purpose
Random access memory (RAM) is the memory or information storage in a computer that is used to store running programs and data for the programs. The information in the RAM can be read and written quickly in any order. Generally, the random-access memory is in the form of a computer chips.
How it works
RAM is one of the most important components in determining your system’s performance. RAM gives applications a place to store and access data on a short-term basis. RAM works by storing common data that programs are in constant use of, rather than storing the data on a much slower medium.
RAM may also be used for different things. RAM can be used for virtual memory. Using virtual memory, a computer can combine permanent storage with RAM to create a bigger pool of storage. This can be useful when RAM doesn’t have enough space to store information. Other ways RAM may also be used is when the computer can use a part of the RAM to store permanent files. This is called a RAM disk. The files are copied to the RAM disk when the computer is turned on and this will allow the files to open faster because RAM is faster than permanent storage.
The history about RAM
The first from of RAM came about in 1947 with the use of Williams tube. It utilised a CRT (cathode ray tube) the data was stored on the face as electrically charged spots. The second widely used form of RAM was magnetic-core memory, invented in 1947. However, RAM, as we know it today, as solid- state memory, was first invented in 1968 by Robert Dennard.
Comparisons
The most common comparison happening with RAM is ROM. ROM is a read only memory. A simple definition of ROM is a memory that provides a permanent storage for instructions needed during bootstrapping, or the process of turning on the computer. The crucial difference between RAM and ROM is the RAM is a volatile memory meaning that it stores data only till the time the power is switched on. While ROM is a non-volatile memory that retains data even when the power gets off. Another comparison between the two is that RAM allows both read and write data operation.