[ELEX] MICROELECTRONICS

Question 1

It is defined as that area of technology associated with and applied to the realization of electronic systems made of extremely small electronic parts or elements.

Answer 1

MICROELECTRONICS

Question 2

First Computer; also known as “The Counting Frame”

Answer 2

ABACUS

Question 3

First Mechanical Computer

Answer 3

PASCALINE

Question 4

First Digital Computer

Answer 4

Atanasoff-Berry Computer and Electronic Numerical Integrator and Computer (ENIAC)

Question 5

Vacuum Tubes Era

Answer 5

1925

Question 6

What component was invented in 1947 and who invented it?

Answer 6

Point Contact Transistors by Walter Brattain, John Bardeen, and William Shockley, Bell Labs

Question 7

What component was invented in 1949 and who invented it?

Answer 7

Bipolar Junction Transistors by William Shockley, Bell Labs

Question 8

When did Bell Labs patented the Transistor Tech?

Answer 8

1952

Question 9

An elementary electronic device constructed as a single unit.

Answer 9

Discrete Electronic Circuits

Question 10

When did Texas Instruments produce the first commercial silicon transistor?

Answer 10

1954

Question 11

What was invented in 1958 and who invented it?

Answer 11

Jack Kilby’s Integrated Circuit

Question 12

What was invented in 1958 and who invented it?

Answer 12

Robert Noyce’s Integrated Circuit

Question 13

It consists of elements inseparably associated and formed on or within a single substrate.

Answer 13

Microchip

Question 14

It is a miniaturized electronic circuit that has been manufactured in the surface of a thin substrate of semiconductor material.

Answer 14

Integrated Circuit

Question 15

What is the first microprocessor and when was it invented?

Answer 15

Intel 4004 ; 1971

Question 16

What is the first 32-bit microprocessor and when was it invented?

Answer 16

Intel 80386 ; 1978

Question 17

What is the first microprocessor with 1 million transistors and when was it invented?

Answer 17

Intel 486; 1989

Question 18

How many gates per chip are there in a Small Scale Integration?

Answer 18

Less than 12 gates per chip

Question 19

How many gates per chip are there in a Medium Scale Integration?

Answer 19

between 12-100 gates per chip

Question 20

How many gates per chip are there in a Large Scale Integration?

Answer 20

more than 100 gates per chip

Question 21

How many gates per chip are there in a Very Large Scale Integration?

Answer 21

excess of 100,000 gates per chip

Question 22

How many gates per chip are there in an Ultra Large Scale Integration?

Answer 22

more than 1 million gates per chip

Question 23

It is a law that states, “The number of transistors on a microchip doubles every two years, though the cost of computers is halved.” and who said it?

Answer 23

Moore’s Law by Gordon Moore

Question 24

It is the science and engineering of making intelligent machines, especially intelligent computer programs.

Answer 24

Artificial Intelligence

Question 25

It is used in circuits that could add, subtract, multiply, and even solve differential equations.

Answer 25

Operational Amplifiers

Question 26

What are the basic parts of an operational amplifier?

Answer 26

Differential Amplifier Voltage Amplifier Push-Pull Amplifier

Question 27

It consists of two transistors in which one is NPN and another is PNP. It also supplies high power to the load.

Answer 27

Power Amplifier

Question 28

It is the maximum rate at which amplifier output can change in volts per microsecond.

Answer 28

Slew Rate

Question 29

It is the DC current required by the inputs of the amplifier to properly operate the first stage.

Answer 29

Input Bias Current

Question 30

It is the difference of the input bias currents, expressed as an absolute value.

Answer 30

Input Offset Current

Question 31

It is defined as the input voltage that would produce the same output error voltage in a perfect differential amplifier.

Answer 31

Input Offset Voltage

Question 32

It is the frequency of signal at which the voltage gain is 1. Also called as Unity Gain Bandwidth

Answer 32

Unity Gain Frequency

Question 33

are relaxation oscillator circuits that oscillate between high and low-level states at the output. It also uses two active components coupled in such a way that one is conducting, while the other is cut-off

Answer 33

Multivibrators

Question 34

A type of state that will not change unless the circuit is disturbed.

Answer 34

Stable State

Question 35

A type of state that remains unchanged for only certain period of time.

Answer 35

Quasi-Stable State

Question 36

It has 2 stable states and no quasi-stable state.

Answer 36

Bistable

Question 37

Also known as One-Shot Multivibrator with 1 stable state and 1 quasi-stable state.

Answer 37

Monostable

Question 38

It has no stable-state but has 2 quasi-stable state. Also known as "Free-Running"

Answer 38

Astable

Question 39

A differentiator is used to measure: A. The sum of the input voltage B. The difference of the input voltages C. The area under the curve D. The rate of change of the input voltages

Answer 39

D. The rate of change of the input voltages

Question 40

Ideally, the value of the CMRR is ________. Practically, the _________ the value of CMRR, the better the circuit operation. A. Zero, smaller. B. Infinite, larger C. infinite, smaller D. Zero, larger

Answer 40

B. Infinite, larger

Question 41

The integrated circuit was invented at Texas Instrument in 1958 by A. Jonathan Kurtz B. James Faug C. Jack Kilby D. Harold Lanche

Answer 41

C. Jack Kilby

Question 42

Which component cannot be fabricated into ICs? A. Diode B. Resistor C. Inductor D. Transistor

Answer 42

C. Inductor

Question 43

Which integrated circuit is having 10 to 100 gates? A. Small-scale Integration (SSI) B. Medium-scale Integration (MSI) C. Large-scale Integration (LSI) D. Very large-scale integration (VLSI)

Answer 43

B. Medium-scale Integration (MSI)

Question 44

What is the typical input resistance of the op-amp amplifier when measured under open loop? A. 2 M(ohms) B. 3 M(ohms) C. 1.5 M(ohms) D. 2.5 M(ohms)

Answer 44

A. 2 M(ohms)

Question 45

TRUE OR FALSE: A good op-amp has low voltage gain, low output impedance, and high input impedance.

Answer 45

FALSE because it should have HIGH VOLTAGE GAIN