Statement I: Static RAM memory devices retain data for as long as power is supplied. Statement II: SRAM is used when the size of read/write memory required is large. Code :

Statement I: Static RAM memory devices retain data for as long as power is supplied. Statement II: SRAM is used when the size of read/write memory required is large. Code : Correct Answer Statement I is true but Statement I] is false

Static RAM:

• Static random access memory (SRAM) is a volatile memory.
• It retains the stored data as long as the power is supplied to it.
• Because SRAM uses transistors to store data, the data is lost when the power supply is OFF as the transistor only operates (ON) when a constant Power supplied to it. (Statement I is correct)
• SRAM is faster and is used as a cache memory because SRAM size on the chip is smaller i.e. density is lower and it does not require refreshing to store data. (Statement II is correct)

Notes:

In a DRAM, a capacitor to store a bit of data is used along with a MOSFET (transfer device) which acts as a switch. The circuit is as shown –

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In a DRAM:

• Periodic refreshing is required.
• The information is stored in a capacitor.
• Both read and write operations cannot be performed simultaneously.