Related Questions

Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
A Interface
B Modem
C Attenuation
D Teleprocessor
E None of the above
The computers that we use are digital whereas we live in an analog world which means that we have to translate analog data into digital data. What is the name of the circuit which helps us in this conversion?
A D/A converter
B A/D converter
C Voice recognition
D Adapter
E None of the above
In data communication which device converts digital data to analog signal?
A Router
B Modem
C Switch
D HUB
L is older than M and taller than N. O is younger than P, older than N and shorter than Q. R is older than S, younger than N, shorter than S and taller than Q. S is older than L, M, O, P, Q, R and S is necessarily false?
A O is the shortest of the group.
B N is the second tallest of the group.
C L is the tallest of the group.
D Q is the third oldest of the group.
An example of an analog communication method is
A laser beam
B microwave
C voice grade telephone line
D All of the above
E None of the above
Which country hosted the fisrt ever G20 Digital Ministerial Meeting on Digital Ministerial on Digital Economy?
A Japan
B Germany
C Russia
D France
On which aspect the analog computers are better than digital ?
A Speed
B Accuracy
C Reliability
D Automatic
Why are digital circuits easier to design than analog circuits?
A they do not control electricity precisely over a wide range
B they are made in the form of ICs
C all elements of digital circuit are from the same family
D they are smaller in size
E None of the above
Signals can be analog or digital and a computer that processes the both type of signals is known as
A Digital computer
B Hybrid computer
C Analog computer
D Mainframe computer
Which of the following amplifier is used in a digital to analog concerter ciruit?
A Non-inverting amplifier
B Summer circuit
C Voltage follower circuit
D Difference amplifier circuit

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