Random Access Memory
RAM (Random Access Memory) is the internal reminiscence of the CPU for storing statistics, software, and software end result. It is a examine/write memory which stores information until the gadget is working. As quickly as the machine is switched off, statistics is erased.
Access time in RAM is independent of the deal with, this is, each garage region in the reminiscence is as smooth to reach as different places and takes the identical quantity of time. Data within the RAM may be accessed randomly but it's far very high-priced.
RAM is volatile, i.E. Statistics stored in it's miles misplaced when we transfer off the laptop or if there's a energy failure. Hence, a backup Uninterruptible Power System (UPS) is regularly used with computer systems. RAM is small, each in phrases of its bodily size and in the quantity of information it could hold.
RAM is of two types −
Static RAM (SRAM)
Dynamic RAM (DRAM)
Static RAM (SRAM)
The word static indicates that the reminiscence keeps its contents so long as strength is being furnished. However, data is misplaced whilst the strength receives down because of risky nature. SRAM chips use a matrix of 6-transistors and no capacitors. Transistors do now not require electricity to save you leakage, so SRAM want no longer be refreshed on a regular basis.
There is extra area in the matrix, therefore SRAM uses more chips than DRAM for the same amount of storage space, making the producing fees better. SRAM is as a consequence used as cache reminiscence and has very fast get entry to.
Characteristic of Static RAM
Long lifestyles
No need to refresh
Faster
Used as cache memory
Large size
Expensive
High energy intake
Dynamic RAM (DRAM)
DRAM, in contrast to SRAM, ought to be usually refreshed which will keep the records. This is achieved with the aid of placing the reminiscence on a refresh circuit that rewrites the information numerous hundred times consistent with second. DRAM is used for most gadget memory as it's far reasonably-priced and small. All DRAMs are made of memory cells, which are composed of one capacitor and one transistor.
Characteristics of Dynamic RAM
Short records lifetime
Needs to be refreshed constantly
Slower in comparison to SRAM
Used as RAM
Smaller in length
Less steeply-priced
Less electricity consumption
0 Comments