Tuesday, 12 June 2018

***ટાટ (TAT ) : ઉચ્ચત્તર અને માધ્યમિક શાળા માટેની ટાટ (TAT ) પરીક્ષા તથા સિલેબસ મા થયેલ ફેરફાર અંગે ની નોટીફીકેશન***



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COMPUTER

Computer is a device that can be instructed to carry out sequence of arithmetic or logical operations automatically via computer programming. Modern computer have the ability to follow generalized sets of operationcalled programes. These programs enable computers to perform an extremely wide range of tasks.

 Computer are used as control system for a wide variety of industrial and consumer devices. This includes simple special purpose devices like microwave ovens and remote controls , factory devices such as industrial robots and computer -aided design, and also general purpose devices like personal computer and mobile devices such as smartphones. Early computer were only conceived as calculating device. Since ancient times, simple manual devices like the abacus aided people in doing calculations. Early in the industrial Revolution , some mechanical devices were built to automate long tedious tasks, such as guiding pattern for looms.More sophisticated electrical machines did specialized analog calculations in the early 20 th centyary.

The first digital electronic calculating machines were developed during World War 2 . The speed , power and versatility of computer have been incresing dramtically ever since then. Conventionally, a modern computer consists of at least one processing elements, Typically a central processing unit ( CPU ) . and some form of memory. The processing elements carries out arithmatic and logical operations and a sequencing and control unit can change the order of operations in response to stored information. Peripheral device include input device ( Keyboards, Mice, Joystic, etc) , output device ( Monitor, printers , etc ) and input/output device that perform both functions . Peripheral devices allow information to be retieved from an external source and they enable the result of operations to be saved and retrieved. .



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