DIGITAL SIGNATURE A digital signature is an electronic signature that can be used to authenticate the identity of the sender of a message or the signer of a document‚ and possibly to ensure that the original content of the message or document that has been sent is unchanged. Why use certificate signatures? Many business transactions‚ including financial‚ legal‚ and other regulated transactions‚ require high assurance when signing documents. When documents are distributed electronically‚ it
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Digital Signature Act 1997 The primary intent of the Digital Signature Act 1997 is to regulate the use of digital signatures and to provide for matters connected therewith. We start with the privacy implications of digital signatures in general. A digital signature is a ’message digest’ encrypted using the sender’s private key. The recipient can recreate the message digest from the message they receive using the sender’s public key. He can then compare the two results to satisfy himself
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In the article Digital Natives‚ Digital Immigrants Marc Prensky asserts that if digital immigrant educators wish to reach digital naives they will have to adapt. Prensky’s claims are a response to the fact that teachers don’t believe that they should have to adapt in order to teach students. With the rapid change change of students and technology the interests and focuses of students have shifted. In addition to this change in students‚ the educators are remaining the same causing a communication
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million television sets are at risk of losing their signals on February 17‚ 2009‚ if consumers do not make the transition to DTV. Analog vs Digital Analog TV – AM vestigial sideband 6 MHz of bandwidth per channel plus the audio High power transmitters for coverage – 45 to 75KW Avg. Out ~300KW to 5MW ERP Noise and multi-path interference common Digital TV – 8VSB MPEG-2 Stream 6 Mhz Channel can produce multiple programs viewable with ATSC tuner
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Digital library Introduction: A digital library is where the information is digitalised and stored in the form of electronic portal that provides access to all kind of database such as bibliographies‚ full-text resources‚ catalogues‚ search engines‚ internet resources‚ reference works‚ E-journals etc. Earlier its only paper based works only available in libraries. However‚ technologies have overcome the traditional techniques and ways of gathering information from libraries. . Now in present life
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DIGITAL FUEL LEVEL INDICATOR ABSTRACT Imagine this. You are on a highway and suddenly your vehicle stops. To your horror‚ you find that you are out of fuel. You check the fuel indicator and find that it has gone repair and is pointing to a higher value on the scale. This is a major shortcoming of the ANALOG FUEL LEVEL INDICATOR. This drawback can be redressed by simply switching the indicator to DIGITAL type. Our project deals on this mechanism and helps to explain the process which can be
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* Merits and Demerits of Digital technology in still photography. Digital Technology: A digital system is a technology that uses discrete‚ discontinuous representations of information or works in a discontinuous manner. This is contrasted with continuous‚ or analog systems which behave in a continuous manner‚ or represent information using a continuous function. Although digital representations are discrete‚ the information represented can be either discrete‚ such as numbers and letters or continuous
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The terms ‘Digital Native’ and ‘Digital Immigrant’ were coined by Marc Prensky in the essay he had written in 2001. Digital Natives were defined as students that were born into the digital age‚ their lives are immersed into technology and are the “‘native speakers’ of the digital language of computers‚ video games and the internet” (Prensky M‚ 2001‚ pp. 1). Digital Immigrants are individuals who were not born into the digital world but have come into contact with technology at one point in their
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The real world isn’t either analog or digital‚ but both. Analog and digital signals are mathematical representations of reality and is useful when we want to process information. We can recognize whether or not something is analog or digital by wave forms. Digital signals often show square shapes and analog shows no obvious pattern but sometimes shows a recognizable shape like a sine wave. Because of this‚ we can sometimes form an opinion about the type of signal by recognizing wave forms. There
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Principles and Theories of Digital Storytelling – ESGD714 Principles and Theories of Digital Storytelling Digital Stories are an effective vehicle for imparting knowledge to the reader in an engaging and inspiring method. In this essay‚ I will investigate and explain the Principles and Theory of Digital Storytelling‚ How Digital Storytelling can be used in the classroom and what possibilities for the future there are in education for Digital Storytelling. “Digital Storytelling is the practice
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