The main advantage of CMOS is its

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URSC ISRO Technical Assistant Electronics 20 August 2017 Official Paper

Answer 1

The most important parameters for evaluating and comparing logic families are:

General comparison of three commonly available logic families is explained in the following table:

Logic Family	Full Name	Advantages	Disadvantages
CMOS	Complementary metal-oxide-semiconductor	Lowest power consumption Used in all microcomputer chips today. Most common logic family.	Easily damaged by static discharge and voltage spikes.
TTL	Transistor-transistor logic	Earliest developed. Most rugged. Least susceptible to electrical damage.	Consumes more power than CMOS – not suitable for battery-operated devices.
ECL	Emitter-coupled logic	Fastest available logic family	Consumes more power than CMOS. It requires extreme care in the wiring.