Why we use modem, Computer Engineering

Assignment Help:

Q. Why we use Modem?

A Modem is one device which most computer users who have surfed Internet are aware of.  A modem is neededsincehowever most of telecommunications have become digital most telephone connections at user end are still analog POTS (Plain Old Telephone Systems/Sets/Service). But the computer is a digital device and henceforth another device is requiredthat can convert digital signals to analog signals and vice-versa.  Such a device is Modem. Modem signifies Modulator/Demodulator.  Modulation is process that puts digital information on to analog circuit by modifying a constant wave (signal) known as the Carrier.  This is what happens whenever you press a button to connect to Internet or to a web site.  Demodulation is reverse process that derived digital signal from modulated wave. This is what happens when you receive data from a website which then gets displayed by your browser.


Related Discussions:- Why we use modem

Explain yet another compiler-compiler, Explain Yet another Compiler-Compile...

Explain Yet another Compiler-Compiler. YACC uses for "Yet another Compiler-Compiler": Computer program input usually has some structure; actually, all computer programs which

Component fulfil this requirement, A component has the time to failure dist...

A component has the time to failure distribution that is modelled as the Weibull distribution with shape parameter 3 and scale parameter of 36 months. This component is planned to

Define throughput, Define throughput?  Throughput in CPU scheduling is ...

Define throughput?  Throughput in CPU scheduling is the number of processes that are completed per unit time. For long processes, this rate might be one process per hour; for s

Difference between a window and a frame?, The Frame class extends Window to...

The Frame class extends Window to describe a main application window that can have a menu bar. A window can be modal.

#title.linear programming, zmax=7.5x1-3x2 subject to constraints 3x1-x2-x3>...

zmax=7.5x1-3x2 subject to constraints 3x1-x2-x3>=3 x1-x2+x3>=2 x1,x2,x3>=0

How many methods used to control traffic flowing in-out, How many methods u...

How many methods used to control traffic flowing into and out of the network by firewall? Firewalls utilize one or more of three ways to control traffic flowing into and out of

What is layer, What is layer? A layered system is ordered set of virtua...

What is layer? A layered system is ordered set of virtual worlds. Every build-in terms of one's below it and providing the execution basis for one above it. The objects in ever

Explain about two-pass assembler, Q. Explain about Two-pass assembler? ...

Q. Explain about Two-pass assembler? Assemblers usually make two or more passes through a source program in order to resolve forward references in a program. A forward referenc

Evaluation stack architecture, Q. Evaluation Stack Architecture? A stac...

Q. Evaluation Stack Architecture? A stack is a data structure which implements Last-In-First-Out (LIFO) access policy. You can add an entry to the with a PUSH(value) as well as

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd