WHAT IS RAM |FULL DETAIL ,ITS EXTRA INFORMATION

What is RAM and how many types are there?

What is RAM? Today, in this article, we’ll explore the meaning of RAM and its complete information in Hindi. After reading this, you’ll find answers to all your questions about RAM. So, let’s get started.

What is RAM? (RAM Kya Hai?)

What is RAM – The full form of RAM is Random Access Memory, it is a hardware device which is usually located on the motherboard of the computer and acts as the internal memory of the CPU.

RAM is volatile memory, meaning it doesn’t store data or instructions permanently. When you turn on your computer, data and instructions are stored directly in RAM from the hard disk.

The CPU uses this data to perform necessary tasks.

As soon as you turn off your computer, RAM loses all data. So, while the computer is on, data remains in RAM, and when the computer shuts down, all data is lost. The advantage of loading data into RAM is that reading data from RAM is much faster than reading it from a hard drive.

Computer performance depends primarily on the size or storage capacity of its RAM. If a computer doesn’t have enough RAM to run its operating system and software programs, its performance slows down.

Therefore, the more RAM a computer has, the faster it will perform. Information stored in RAM is accessed randomly, so its access time is very fast.

History of RAM

• The first type of RAM was introduced in 1947 with the Williams tube. It was used in CRTs (Cathode Ray Tubes).
• The second type of RAM was magnetic-core memory, also invented in 1947.
• The RAM we know today as solid-state memory was invented by Robert Dennard at the IBM Thomas J. Watson Research Center in 1968. It is specifically known as Dynamic Random Access Memory (DRAM) and contains transistors to store bits of data.
• In October 1969, Intel introduced its first DRAM, the Intel 1103. It was its first commercially available DRAM.
• Then in 1993, Samsung introduced the KM48SL2000 Synchronous DRAM (SDRAM).
• Then in 1996, DDR SDRAM became commercially available.
• Then in 1999, RDRAM became available for computers.
• Then in 2003, DDR2 SDRAM went on sale.
• Then in June 2007, DDR3 SDRAM went on sale.
• Finally, in September 2014, DDR4 became available on the market.

Types of RAM

Random Access Memory (RAM) comes in two main types:

Static RAM (SRAM)

Dynamic RAM (DRAM)
Both types of RAM are volatile because they lose their data when the power supply is turned off.

Static RAM (SRAM)

Static RAM (SRAM) is a type of random access memory. It holds data as long as it receives power. It is made up of memory cells and is called static RAM because it does not need to be refreshed regularly.

Unlike dynamic RAM, it does not require power to prevent leakage, so it is faster than DRAM.

Static RAM has a special arrangement of transistors that form a flip-flop (a type of memory cell). Each memory cell stores one bit of data. Access times in SRAM chips can be as low as 10 nanoseconds. Meanwhile, access times in DRAM are typically above 50 nanoseconds.

Dynamic RAM (DRAM)

Dynamic RAM (DRAM) is also made up of memory cells. It is an integrated circuit (IC) composed of millions of transistors and capacitors that are very small in size, and each transistor is lined up with capacitors to create a very compact memory cell so that millions of them can fit on a single memory chip.

A DRAM memory cell consists of one transistor and one capacitor, and each cell stores one bit of data in its capacitors within an integrated circuit.

It is called dynamic RAM because it needs to be constantly refreshed to retain its data. There are three main types of dynamic RAM:

Asynchronous DRAM

This type of DRAM is not synchronized with the CPU clock. One disadvantage of this RAM is that the CPU cannot know the exact time at which data from the RAM will be available on the input-output bus.

This drawback has been addressed by the next generation of RAM, known as synchronous DRAM.

Synchronous DRAM

In SDRAM (Synchronous DRAM), the RAM is synchronized with the CPU clock. Memory access is not required by the CPU, thus increasing memory reading and writing speeds. SDRAM is also known as Single Data Rate SDRAM (SDR SDRAM).

DDR SDRAM (Double Data Rate SDRAM)

The next generation of synchronous DRAM is known as DDR RAM. It was developed to overcome the limitations of SDRAM. It was used in PC memory in the early 2000s.

In DDR SDRAM (DDR RAM), data is transferred twice during each clock cycle. This is known as Double Data Rate SDRAM.

There are different generations of DDR SDRAM, including DDR1, DDR2, DDR3, and DDR4. The memory we use today in desktops, laptops, and mobile devices is mostly either DDR3 or DDR4 RAM.

Types of DDR SDRAM –

• DDR1 SDRAM
• DDR2 SDRAM
• DDR3 SDRAM
• DDR4 SDRAM

You learned

What is RAM? – We hope you enjoyed our article, “What is RAM and how many types are there?” We’ve tried our best to explain everything related to this topic in simple terms.
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