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One of the key factors affecting the performance of your computer system is random access memory (RAM). Applications can store and access data in RAM for a short-term of time. It stores information that your computer is actively utilising so that it may be readily accessible.
What is RAM on a Computer?
The RAM (Random Access Memory) is the component of a computer that stores the operating system (OS), application programs, and data that are actively being used so that the processor of the computer may access them quickly.
The primary memory of a computer is RAM. Compared to other types of storage, such as a hard disc drive (HDD), solid-state drive (SSD), or optical drive, it is significantly faster to read from and write to.
Random Access Memory is volatile. This means that information is kept in RAM while the computer runs, but it is erased when the computer is powered off. The operating system and other information are frequently loaded from an HDD or SSD into RAM when the system is restarted.
What is the Function of RAM and Its Types?
RAM is not suitable for storing permanent data due to its volatility. A hard drive may be compared to a person’s long-term memory, and RAM to their short-term memory. The short-term memory is geared toward doing what has to be done right now, but it can only hold so many things in its memory at once.
This is how a computer functions as well. When RAM is full, the CPU of the computer must repeatedly access the hard drive to overwrite the old data in RAM with the fresh data. The operation of the computer is slowed by this process.
A computer’s hard disk can become completely full of data and unable to take anymore, but RAM won’t run out of memory. While RAM won’t run out of memory, a computer’s hard drive may fill up completely and be unable to hold any more data.
Types of RAM
RAM comes in two primary forms:
Dynamic Random Access Memory (DRAM): It is often found in computing devices, and as was already mentioned, it requires power in order to maintain stored data.
An electrical capacitor stores the charge or lack of charge for each DRAM cell. To account for leakage from the capacitator, this data must be regularly updated with an electronic charge every few milliseconds. A transistor acts as a gate, deciding whether it is possible to read or write the value of a capacitor.
Static Random Access Memory (SRAM): While DRAM requires frequent refreshes, static random access memory (SRAM) does not require this to store data. SRAM requires continuous power.
In SRAM, the transistor functions as a switch with one position serving 1 and the other serving 0, replacing the capacitor that would normally store the charge. In contrast to dynamic RAM, which only needs one transistor per bit, static RAM needs multiple transistors to store each data bit.
SRAM chips are therefore significantly bigger and more costly than an equivalent quantity of DRAM.
DRAM utilises more power than SRAM, which is substantially quicker. Static RAM is mostly utilised in modest quantities as cache memory inside a computer’s CPU due to the price and speed disparities.
What is the Function of ROM?
Data stored in read-only memory, often known as ROM, can only be read from and not written to. Every time a computer is powered on, the boot-up programming in its ROM is used. Generally, it can not be changed or reprogrammed.
Since the data in ROM is nonvolatile, it is not lost when the power is off the computer. Read-only memory is used to store permanent data. On the other hand, random access memory can only hold data temporarily. While RAM often has several gigabytes of storage, ROM typically has a few megabytes.
What is the Function of RAM in Mobile Phones?
The memory management system in smartphones is well defined. In order to deliver a smooth user experience without lag, it is intended to utilise more RAM.
An app that you download and install is kept on your permanent storage (which might be an internal or external SD card). The software gets moved to RAM each time it is executed. (RAM is used to execute all active processes.)
These days, smartphones won’t delete an app from memory (RAM) even after you close it, allowing you to quickly access it whenever you need it. “Background processes” are the processes that continue running in RAM even after the application has closed.
When a smartphone detects a certain app being used frequently, it automatically labels it as a background process.