RAM(Random Access Memory)

RAM (Random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor.

1. R A M Random Access Memory

2. RAM RAM ( Random access memory ) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor.

3. RAM Random Access Memory (RAM) is a type of data storage used in computers that is generally located on the motherboard . This type of memory is VOLATILE because all information that was stored in RAM is lost when the computer is turned off.

4. Types of RAM There are two main types of RAM: DRAM (Dynamic Random Access Memory) SRAM (Static Random Access Memory).

5. DRAM Dynamic Random Access Memory (DRAM) is a type of random-access memory used in computing devices . DRAM stores each bit of data in a separate passive electronic component that is inside an integrated circuit board. DRAM needs to be refreshed often otherwise information fades. DRAM has one capacitor and one transistor per bit as opposed to SRAM that requires 6 transistors. The capacitors and transistors that are used are exceptionally small.

6. SRAM Static Random Access Memory (SRAM) is a type of RAM that holds data in a static form, that is, as long as the memory has power. It does not need to be refreshed. SRAM stores a bit of data on four transistors using two cross-coupled inverters. During read and write operations another two access transistors are used to manage the availability to a memory cell. To store one memory bit it requires six metal-oxide-semiconductor field-effect transistors (MOFSET). MOFSET is one of the two types of SRAM chips; the other is the bipolar junction transistor.

7. Why SRAM is faster than DRAM? In terms of speed, SRAM is faster. DRAM needs to be refreshed thousands of times per second while SRAM does not need to be refreshed, which is what makes it faster than DRAM. DRAM supports access times of about 60 nanoseconds, SRAM can give access times as low as 10 nanoseconds. Despite SRAM being faster, it's not as commonly used as DRAM because it's more expensive.

8. SRAM DRAM Stores data till the power is supplied. Stores data only for few milliseconds even when power is supplied. Uses an arry of 6 transistors for each memory cell. Uses a single transistor and capacitor for each memory cell. Doesn’t refreshes the memory cell. Needs to refresh. Data access is faster. Data access is slower. Consume more power. Consume less power. Low density/less memory per chip. High density/more memory per chip. Cost per bit is high. Cost per bit is low. Differences between SRAM & DRAM

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