GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 1 of 271

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» Digital Circuits » Semiconductor Memories » ROM, SRAM, DRAM

Appeared in Year: 1997

MCQ▾

Question

Each cell of a static random access memory contains

Choices

Choice (4) Response

a.

1 MOS transistors and 1 capacitors

b.

4 MOS transistors and 2 capacitors

c.

6 MOS transistor

d.

2 MOS transistors and 4 capacitors

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Ques. Time

Answer

c.

Explanation

  • SRAM: is random access memory that retains data bits in its memory as long as power is being supplied.
Circuit diagram of SRAM using 6 MOSFET

Circuit Diagram of SRAM Using 6 MOSFET

A typical SRAM is made up of six MOSFETs.

  • Each bit in it is stored on four transistors that form two cross- coupled inverters. This transistors has digital output in the form of 0 or 1.

  • Two additional access transistors are used to control the access to a storage cell during read and write operations.

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