Where is sram and dram used

So what are the common types of DRAM? DDR1 is the oldest type of DRAM that Simms currently supply and is available from specialist industrial manufacturers and not commonly available for consumer applications.

DDR4 is the latest version and is widely available for industrial and consumer markets. DDR5 is being forecast sometime in possibly earlier. It is non-volatile, which means it can retain data even without power. It is used mainly to start or boot up a computer. Once the operating system is loaded, the computer uses RAM , which stands for R andom- A ccess M emory, which temporarily stores data while the central processing unit CPU is executing other tasks.

RAM is fast but it is volatile, which means it will not retain data if there is no power. The information stored in this type of memory is lost when the power supply to the PC or laptop is switched off. It is generally known as the main memory or temporary memory or cache memory or volatile memory of the computer system.

SRAM is a type of semiconductor memory that uses Bistable latching circuitry to store each bit. In this type of RAM, data is stored using the six transistor memory cell. It also consumes less power. It is a type of RAM which allows you to stores each bit of data in a separate capacitor within a particular integrated circuit. It is a standard computer memory of any modern desktop computer. SRAM can hold the data as long as power is supplied to it. To generate stable logic state, four transistors T1, T2, T3, T4 are organized in a cross-connected way.

Both states are stable until the direct current dc voltage is applied. The SRAM address line is operated for opening and closing the switch and to control the T5 and T6 transistors permitting to read and write. For read operation the signal is applied to these address line then T5 and T6 gets on, and the bit value is read from line B.

The capacitor is used for storing the data where bit value 1 signifies that the capacitor is charged and a bit value 0 means that capacitor is discharged.

Capacitor tends to discharge, which result in leaking of charges. The dynamic term indicates that the charges are continuously leaking even in the presence of continuous supplied power that is the reason it consumes more power.

To retain data for a long time, it needs to be repeatedly refreshed which requires additional refresh circuitry. Due to leaking charge DRAM loses data even if power is switched on. DRAM is available in the higher amount of capacity and is less expensive. It requires only a single transistor for the single block of memory. At the time of reading and writing the bit value from the cell, the address line is activated.