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Types of Search Engine:
Some of the basic categories of Search engines are :
a. Primary Search Engines: Such search engines use web crawlers or spiders to traverse the web and scan websites for key words, phrases, to generate database of web pages having some indexing or classification. Google and Alta Vista are examples of primary search engines.
b. Web directory: Web directories organize information into categories and subcategories or directories. You can search a web directory for all those entries that contain a particular set of keywords. Directories differ from search engines in the way they organize information. Yahoo is an example of web directory.
c. Meta search engines: Such search engines pass your queries to many search engines and web directories and present summarized results to the users. Some of the examples of meta search engines are - Dogpile, Infind, Metacrawler, Metafind and Metasearch.
Data Processing : Processing data is the most complex function of a computer system. It is where the computer itself (as opposed to a peripheral, e.g. a visual display unit or a p
Program Planning (Preparation of a Flow Chart) A flow chart is a graphic method for indicating a proposed or actual solution to the problem. A flow chart shows the steps a comp
For the formation of a program it is necessary to follow five steps: Design of the algorithm, stage the problem to be solved is reputable and the best solution is proposed, creatin
QUESTION (a) Using diagrams, describe the 2-tier and 3-tier architectures. (b) What is a middleware? Explain the functions of a middleware. Give two examples of middleware.
can someone balance between information security and access, if yes,how can they balance?
Liquid Crystal Displays (LCD): First introduced in watches and clocks in the1970's, LCDs are now used to display images in monitors. A newer technology in computer screens is
Given the following grammar: -> [ , ] | -> | { } -> a | b | cwhich are the strings generated by the grammar? Show the parse tree(s). a). { [ a , b ] }b). [ { a } , b ]
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what is input and output device? explain meaning of input and output devices
COMPONENTS OF A DIGITAL COMPUTER: A digital computer is an electronic device that receives data, performs arithmetic and logical operations and produces results according to a
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