A Voltage-Controlled Oscillator (VCO) is a circuit that provides a varying output signal (typically of square-wave or triangular-wave form) whose frequency can be adjusted over a range controlled by a dc voltage. An example of a VCO is the 566 IC unit‚ which contains circuitry to generate both squarewave and triangular-wave signals whose frequency is set by an external resistor and capacitor and then varied by an applied dc voltage. Figure (1) shows that the 566 contains current sources to charge
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Digital audio uses pulse-code modulation and digital signals for sound reproduction. This includes analog-to-digital conversion (ADC)‚ digital-to-analog conversion (DAC)‚ storage‚ and transmission. In effect‚ the system commonly referred to as digital is in fact a discrete-time‚ discrete-level analog of a previous electrical analog. While modern systems can be quite subtle in their methods‚ the primary usefulness of a digital system is the ability to store‚ retrieve and transmit signals without any
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MODULATION TECHNIQUES 1.4.1 FREQUENCY SHIFT KEYING (FSK) Frequency shift keying is a frequency modulation in which the digital information is transmitted by discrete changes in frequency of the carrier signal. This technology is used for the communication system such as caller ID and emergency broadcasts [19]. The binary FSK is the simplest FSK. BFSK uses a pair of discrete frequencies to transmit binary information. The 1 and 0 is mentioned as mark frequency and space frequency. The other forms
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ADVANTAGES AND DISADVANTAGES OF USING INTERNET In the history of human mankind‚ the Internet has undoubtedly been the greatest development in the domain of communication industry. Internet has tremendous potentials and a lot to offer in terms of services. However‚ if examined carefully‚ the Internet appears to have not only advantages but also some drawbacks. One good point is that the Internet is a source of information. There is a huge amount of information available on the Internet for just
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The Advantages and Disadvantages of Communicative Language Teaching The Advantages and Disadvantages of Communicative Language Teaching By HAH Introduction The focus of this essay is to highlight the advantages and disadvantages of Communicative Language Teaching (CLT). In doing so‚ it is important to first clarify the meaning of CLT and it’s place in the ongoing history of language teaching methodology. CLT is generally accepted as the most recognized‚ contemporary approach to language
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In regard to dahi‚ several factors make it a good carrier for probiotics. Dahi possesses a positive health image‚ has a long history of safe use and is liked by people belonging to all age groups and in different regions. Hence‚ administration of probiotic organisms becomes easy through this product. Moreover‚ the technological reasons also exist for the use of dairy products as carriers for probiotics. The technologies involved in the making of dahi like fermented products are optimized to some
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Advantages of Total Quality Management (TQM) Improves Reputation - TQM programs have the advantage of improving corporate as well as product reputations in the marketplace‚ because errors and defective products are discovered much more rapidly than under a non-TQM system‚ and often before they are ever sent to market or found in the hands of the public. Higher Employee Morale - Compared to employees who are motivated‚ disengaged workers are less efficient‚ miss more workdays and cost organizations
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of people to keep in touch with each other although they are a million of miles away‚ even stresses out overseas. Although humanity has benefited from the resources and convenience provided by telecommunication‚ contradicting these are the disadvantages of telecommunication if misused‚ brutalized and abused. ”Communication ties together the parts of the society just as the nervous system ties together the parts of an individual. From earliest times‚ when the only form of communication was speech
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Advantages and disadvantages of living in the countryside Privacy If you like privacy‚ living in the country works well -- particularly if your home is situated in a remote area and you don’t have neighbors for miles. This also provides solitude. Less Pollution The countryside is generally quiet and peaceful -- certainly not as contaminated with toxic pollutants as the city. There isn’t as much traffic or smog or pollution from industry. Ecologically speaking‚ the advantages to living in the
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The advantages and disadvantages of living in a block of flats To begin with‚ it is said that living in a block of flats is very uncomfortable but many people do not agree. With such view a block of flats helps to find a lot of friends and deepen our communication skills. So what are the advantages and disadvantages of living in a block of flats? One the one hand‚ living in a block of flats is advantageous for many reasons. Firstly‚ people who live in a block of flats are friendlier than people
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