Computer Memory The memory of Computer: A memory or store is required in a computer to store programs and the data processed by programs. A memory is made up of a large number of cells with each cell capable of storing one bit. The cells may be organized as a set of addressable words each […]
Computer Networks Need for computer communication Networks: An employee of an organization who has PC at home would use it for most of his work and connect it through communication lines to a powerful computer called a server fro executing larger programs and access special library programs and data resident in the server for executing
Operating Systems Why Do We Need An Operating System: We saw in the last chapter that high-level languages were developed to enable computer users to concentrate on designing appropriate algorithms for solving problems instead of being concerned with the details of a computer’s internal structure. The compiler to translate the program is loaded in the
Voice and Data Communication Data Communication: Early computers were being used as stand-alone systems in organization fulfilling their own requirements with the widespread use of computers there was a realization that it would be advantageous in many situations to use computers from remote points. Types of communication with and among computers: Users would prefer to
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INPUT/OUTPUT DEVICES Input/Output Units: A computing machine designed to carry out algorithms for data processing thus has the seen input unit is provided to read the algorithm and data to be processed by the algorithm. The memory unit stores the algorithm and computed values. The processing unit interprets the instructions and carries them out. It
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SPACE Space: Space means the immeasurable expense of the universe beyond the atmosphere. Telescope: A telescope is a tube-like instrument fixed on a stand.it contains lenses to view objects that are far away. Stars: Stars are large balls of burning gases in the space that we see as points of light in the sky
Earth Features Island: Land surrounded by water on all sides. Lava: Hot melted Rocks. Peak: The pointed top of the mountains. Cascade: A waterfall with a small volume of water. Volcano: sudden sliding of snow down a mountain slope. Delta: Alluvial area of land at the mouth of the river. Desert: Sandy places
SOLAR SYSTEMThere are 9 PLANETS in our Solar System: Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto (Now Pluto has been excluded) MERCURY is the nearest to the sun.it is the smallest and the hottest one. PLUTO is farther from the sun. It is coldest one and farther from the earth also. JUPITER is
