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Frequency and Bandwidth:
Let us try to understand a little about how information is transmitted. The information may be in the form of sound (human voice, music) or it may be visual (printed page, microfilm, video picture) or it may be digital data. Whatever may be the form, it must be converted to electrical signals (electromagnetic waves) before it can be transmitted over a given medium. Such signals very often cannot be sent over a channel as they are, but must be modulated in some way to fit them into the carrying medium. The frequencies of the electromagnetic waves are normally radio frequendies which range from low frequencies capable of carrying only small amounts of information to millimeter waves, which can carry very large amounts. Above the radio frequencies lies light frequency, which can be modulated to carry even larger amounts of information. In other words, the amount of information that can be sent over a given channel in a given time is dependent on the bandwidth. The bandwidth available increases with increasing carrier frequency. Thus, generally speaking the wider the bandwidth, the larger the amount of information which can be carried and the faster its speed.
what is ms dos?
Central Processing Unit Microprocessor The microprocessor is an important component in the CPU. It is the unit which processes the instructions depending on its capability
file system
DIAGRMS OF TYPES OF LOCAL AREA NETWORK
QUESTION (a) For each of the following systems, determine whether the system is (1) stable, (2) causal, (3) linear, (4) time invariant, (5) passive (i) Y[n] = x[-n] (ii)
The instructions of the logic functions are: and not, or and xor. These act on the bits of their operators. To make sure the result of the operations we revolve to the cmp and test
IP provide connectionless service to upper layer IP protocol is very simple could not guarantee the reliability of transportations IP protocol is Point to Point IP provide the unif
Question 1 Discuss the two basic operational characteristics of RR Only an active route is redistributed Route redistribution does not impact local route selection
programm for fibonacci series
Languages The language is a program containing rules and guidelines to help us in making programs. There are various languages like C, Basic, COBOL, PASCAL, FORTRAN etc. Th
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