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Download Advanced Data Communications and Networks by Dr. William J. Buchanan (auth.) PDF

By Dr. William J. Buchanan (auth.)

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When this is received, the receiver detects that it is in its dictionary and it knows that the addressed sequence is 'ab'. Next the transmitter reads an 'a' and checks for the sequence 'ba' in its dictionary. e. 0111. When this is received, the receiver checks its dictionary and locates the sequence 'ba'. This then continues with the transmitter and receiver maintaining identical copies 34 Advanced data communications of their dictionaries. A great deal of compression occurs when sending a sequence of one character, such as a long sequence of 'a'.

Discuss the difference between the two types and give examples of where they would be used. 3 QWERTASDFGZXCVB and on the right-hand side (excluding non-letters) are: POIUYHJKLNM, . 1 determine the probability of using the left-hand side of the keyboard, and compare this with the probability of using the right-hand side. Thus determine which hand is used more often by a typist. 4 Explain the differences between source coding and entropy coding. Give examples of where they could possibly be used.

The number of colors per pixel. If N bits are used for the bit color then the total number of displayable colors will be 2N. 7M colors. • Palette size. Some systems reduce the number of bits used to display a color by reducing the number of displayable colors for a given palette size. 1 File Compression ~e Typical standard compressed graphics formats Max. resolution or colors 48-bit color TIFF HuffmanRLE andlorLZW TIFF (tagged image file fonnat) is typically used to transfer graphics from one computer system to another.

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