What is RAM? How does Ram works?

      Short Explanation of  what is Ram?

Hey Guys darshu here and here on this blog I touch a little with What is RAM in mobile?. Yes, you may have heard the word online when you watch Tech channels or Gaming setups but you know how it works and what it does. what is ram used for ?

what is ram in computer?

        Stay tuned and let’s get straight into it. Random Access memory(RAM) is a hardware devicet that allows data to be stored and accessed on a computer. RAM is a flexible memory and requires powerto to keep data accessible. When the computer is turned off, all data containing RAM is lost. For general use, the term RAM is similar to the main memory, the memory available in programs. For example, a computer with 8GB of RAM has about 8 billion memory that can be used by programs. In contrast, ROM (read-only memory) refers to the specific memory used to store computer programs. Most personal computers have a small number of ROMs (a few thousand bytes). In fact, both types of memory (ROM and RAM) allow random access. Accuracy, therefore, RAM should be referred to as read / write RAM and ROM as read-only RAM. You can compare RAM with a person's short time and a hard disk in long-term memory. Short-term memory focuses on the work being done, but can only store multiple facts at once. When a temporary memory fills up, your brain is sometimes able to rejuvenate you from facts stored in long-term memory. The computer also works this way. When the RAM is full, the processor needs to continue to the hard disk to paste the old data into the new RAM, reducing computer performance. Unlike a hard disk, which can be completely full of data and can receive more, RAM does not run out of memory, but a combination of RAM and storage memory can be fully utilized. So, there are actually two main types of Ram. These are DRAM and SRAM. Powerful random access memory. DRAM is the main source of computer RAM and as already mentioned it requires a constant capacity to hold stored data. Random access memory. SRAM does not always require power to capture data, but the way memory chips are made means they are much larger and cost several times more than the equivalent amount of DRAM. However, SRAM is much faster than DRAM. Price and speed variations mean that SRAMs are widely used in small amounts as cache memory within the device processor. DRAM needs to be renewed twice a thousand seconds while SRAM does not need to be renewed. Now let’s get a little into the genre of less RAM. That’s where things get more sophisticated. SD-RAM, DDR, DDR2, DDR3 AND DDR4. SDRAM refers to Synchronous Dynamic RandomAccess Memory. SDRAM is designed to adapt to CPU time. This enables the memory controller to know the exact clock cycle when the requested data will be ready, so the CPU no longer towait within memory access. For example, PC66 SDRAM operates at 66 MT / s or Megtransfers per second, PC100 SDRAM operates at 100 MT / s, PC133 SDRAM operates at 133 MT / s, and so on. SDRAM can replace SDR SDRAM (Single DataRate SDRAM), where I / O, internal clock and bus clock are the same. For example, the I / O, the internal clock and the PC133 bus are all 133 Mhz. Single Data Rate means that SDR SDRAM cannot read / write simultaneously in a clock cycle. SDRAM has to wait for the completion of the previous command in order to perform some reading / writing activity. The next generation of SDRAM is DDR or in other words (Double Data Rate SDRAM). This type gains greater bandwidth than its predecessor of a single data rate by transferring data to the ascending edges and its theclock signal. Effectively, it doubles the number of transfers without increasing the frequency of the clock. The DDR SDRAM transmission rate is doubleof SDR SDRAM without changing the internal clock. DDR SDRAM, like the first generation of DDRmemory, the prefetch buffer is 2bit, double the SDR SDRAM. The DDR transmission rate is between 266 ~ 400MT / s. DDR2 RAM or (Double Data Rate Two SDRAM) incorporates a 2x clock in the module, which means that a bus clock running at the same speed as DDR RAM will double, thus doubling the transmission speed by 2 at the same bus speed. This is achieved by an improved bus signal. The prefetch buffer for DDR2 is 4 bit (doubleof DDR SDRAM). DDR2 memory is at the same internal time (133 ~ 200MHz) as DDR, but the DDR2 transmission rate can reach 533 ~ 800 MT / s with an improved I / O bus signal. DDR3 SDRAM or (Double Data Rate Three SDRAM): DDR3 memory reduces power consumption by 40% compared to current DDR2 modules, allowing for lower operating currents and ratings (1.5 V, compared to DDR2's 1.8 V or DDR's2.5 V). DDR3 transmission rate is 800 ~ 1600 MT / s. The prefetch diameter of DDR3 is 8 bit, and DDR2 is 4, and DDR is 2 bit. DDR3 also adds two functions, such as ASR (Automatic Refresh) and SRT (Your Refresh Temperature). They can cause memory to be adjusted depending on the temperature variation. DDR4 SDRAM (Fourth SDRAM Data Rate): DDR4 SDRAM provides low performance (1.2V) and high transmission rate. The DDR4 transmission rate is 2133 ~ 3200 MT / s. DDR4 adds new technology for Four Bank Groups. Each banking unit has a secret operating feature. DDR4 can process 4 data within a clock cycle, so DDR4 efficiency is better than DDR3 obviously. DDR4 also adds other functions, such as DBI (Data Bus Inversion), CRC (Cyclic Redundancy Check) and CA parity. They can enhance the integrity of the DDR4 memory signal, and improve the stability of data transfer / access. And it’s just about it with this definition of time to Ram. Thanks for reading.