FOR IPCC.... Central Processing Unit : It is the heart of the computer that makes comparisons, performs calculations, reads, interprets and controls the execution of the instructions. BIOS : It stands for Basic Input Output System. It is a small chip on the mother board that Loads the hardware settings required to load various devices like key boards, monitors, or disk drives . Intelligent Terminal : It is a terminal which has an in-built processing capability. It is user programmable and contains not only a storage area but also a micro- processor. Seek Time : This is a time required to position a movable read-write head over the recording track to be used. File Pointers : They establish linkage between records and are a basic part of the file Organization of all the database models except the relational model. Light Pen: It is a pointing device which can be used to select an option by simplynpointing at it,or drawing figures directly on the screen. Ethernet : It is a very common network protocol. It uses the linear-bus topology and is Inexpensive and simple Output Devices: They are instruments of communication between people and machines. They are used to record the results obtained by the computer and present them to the outside world. PROM:It stands for Programmable Read Only Memory. It is a non-volatile memory which allows the user to program the chip with a PROM write Dumb Terminals : They are the terminals which cannot do processing on their own and Serve only as input / output mechanisms that link users with the central CPU in a large system computing. Rotational Time : This is the rotational delay also termed latency, to move the storage Medium underneath the read-write head. Buffering : It enables the processor to execute another introduction while input or output is taking place rather than being idle while transfer is being completed. Query Language : It is a set of commands for creating, updating and accessing data from a database. It allows programmers, managers and other users to ask adhoquestions of the database interactively without the aid of programmers. Half Duplex: It is a transmission mode under which data can be transmitted back and forth between two stations, but data can only go in one of the two directions at any given point. Protocols : They are software that performs a variety of actions necessary for data Transmission between computers. They are a set of rules for inter-computers. They are a set of rules for inter- computer communication that have been agreed upon and implemented by many vendors, users and standard bodies. Data : Data can be defined as any fact, observation, assumption or occurrence. They are Useful knowledge or information of value to an individual or business. They are factual material used as a basis for discussion, decision, calculation, or measurement. Data are compiled to form reports, figures, or documents etc. Information : Information is organised or classified data so that it has some surprise value to the receiver. For example, the daily production figures are raw data for the managing director to whom they have little value as such. Data Processing : is the restructuring or reordering of data by people or machines, to Increase their usefulness and value for some particular purpose...
Posted on: Thu, 08 Aug 2013 02:00:24 +0000
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