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Murrr4er [49]
3 years ago
5

What is a 'balanced' dfd?

Computers and Technology
1 answer:
jasenka [17]3 years ago
8 0

Answer:

 The balanced DFD (Data flow diagram) is the concept of the balancing all the state and incoming and also outgoing flow in the system.

The balanced data flow diagram basically ensure that the output and input data flow maintain the consistency in the DFD and are properly aligned the flow of data.

A balanced DFD does not include any type of flowchart in the control statement and also does not contain any crossing lines.

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____ technology essentially takes the data to be transmitted and rather than transmitting it in a fixed bandwidth spreads it ove
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Answer: Spread spectrum

Explanation:

In spread spectrum the data to be transmitted is spread over a wider bandwidth rather than fixed bandwidth.

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Creation of ____________will help you to study the behavior of the real system
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I don't know but....I think (Sorry if I am wrong)

Explanation:

Psychology

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1.Electromagnetic waves can carry more data at higher frequencies. Why would a scientist opt to transmit data at a lower frequen
skad [1K]
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communication is a process of transmitting and receiving information in the form of signals.high technology communication use electromagnetic waves,there are various types of electromagnetic waves which are used in communication which include radio-waves,microwaves,infrared  e.t.c some of their limitations are
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ii)Through the air signals can be distorted by atmospheric conditions and signals from space are sometimes distorted by solar activity
iii)physical activities such as mountains and buildings can prevent or interfere with some transmissions
iv)Through the air signals are not private,so any tuned receiver within the range can pick up them.
3)Differences between digital and analogue signals
Analogue and digital signal are used to transmit information usually through electric signals.
An analogue signal is continuous wave denoted by sine wave and may varry in signal strength (amplitude) or frequency(time) an example is sound from human voice is analogue because waves are continuous..
A digital signal is a signal in which the original information is converted into a string of bits before being transmitted .example a must for computer processing where is described as using (0s and 1s)and therefore can not take any fractional value.
4)Advantages of using digital signals over analogue signals
one advantage of digital signals are inherently less susceptible than analog signals to interference caused by noise because with digital signal it is not necessary to evaluate precise amplitude,frequency or phase.
Another advantage based in capacity is that digital signals carry more information per second than analogue signals.
Digital signals maintain their quality over long distances better than analogue signals.
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digital signal processing is the way of life of current generation 
example is mobile phones do alot of digital signal processing .they process our our speech digitally to remove background noise,echo  e.t.c
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How radio telescopes are used to explore space
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.It has several main parts, a dish and antenna,a receiver,a detector and an analyzer.The dish collects the radio signals from space ad focuses them on the antenna.
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Radio waves are used to transmit television and radio programs They have longer wave lengths and are reflected by the ionosphere
7) Reasons why telescopes convert radio waves (analog) to electrical(digital) signals for analysis
This is because signals can be easily stored and transmitted in digital form.The analog is continuous in time and it is necessary to convert this to a flow of digital values.
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Answer:.

Explanation:

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