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Explain in detail about the Random Scan Display
This device using CRT directs the electron beam only to the parts of the screen where a picture is to be drawn. This kind of device draws only a line on the screen given by its two end points. That is why these devices are referred as vector displays (or calligraphic displays). In case of display device, it is not only an object which has to be drawn but it is also important to refresh it before it disappears in a given period of time depending on the persistence. No frame buffer exists for this kind of systems. When the object consists of too many lines, refreshing time might be longer than the persistence of the phosphor. This may lead to flickering of the picture on screen. In such systems, there may be a display processor that reads a display file. Display file consists of a sequence of graphics commands generated by the application program to refresh the screen.
Discuss in brief the history of E-Commerce. History of E-commerce illustrated below: E-commerce began before personal computers were prevalent and has grown into a multibill
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what is batch system?how the disadvantage of batch system are overcome in multi-programming operating system?also describe how multi-programmed operating system is milestone in dev
What is guard bits? Guard bits are extra bits which are produced while the intermediate steps to yield maximum accuracy in the final results.
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What are the categories of Radio communication 1. Sky wave or ionosphere communication 2. Line-of-sight (LOS) microwave communication limited by horizon 3. Troposphere
An analog information signal, whose maximum frequency is 6000Hz, is to be transmitted using a PCM system. The quantization error must not exceed the ±1 % of the peak-topeak analog
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What is phase encoding or Manchestor encoding? It is the method for combining clock information with data. It is a scheme in which alters in magnetization occur for each data
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