Computer Studies

Computer-Studies

APPLICATION SOFTWARE – Full Explanation

Application Software These refer to the program used to solve a particular type of problem or variety of similar problems. Mostly, application programs are produced by an organisation for its specific tasks. Types of application software There are two major types of application software. These are: Users’ Application Program Application Package Users’ Application Programs: These […]

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Computer-Studies

ART OF INFORMATION PROCESSING – COMPREHENSIVE EXPLANATION

ART OF INFORMATION PROCESSING – CPMPREHENSIVE Art of Information processing can be defined as a series of actions or operations that convert data into useful information. It is the act of gathering, manipulating, storing, retrieval and classifying recorded information. Art of information processing is the acquisition, recording, organisation, retrieval, display and dissemination of information. Data

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Computer-Studies

FILE ORGANISATION

FILE ORGANISATION File organisation refers to the way in which data is stored in a file and the methods by which it can be accessed. Database is stored as a collection of files. Each file is a sequence of records. A record is a sequence of fields. Data is usually stored in the form of

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Computer-Studies

UTILITY PROGRAMS AND TRANSLATORS

TRANSLATOR These are programs used in converting programs written in other languages to machine language. They are also called language processors. The computer can only execute programs written in machine codes. These codes are tedious for programmers to write; hence they prefer other languages close to human. The translators are then required to change the

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Computer-Studies

OPERATING SYSTEM

OPERATING SYSTEM This is a set of programs which takes over the operation of the computer to the point of being able to allow a number of programs to be run on the computer without intervention by an operator. It acts as an interface between the user and the hardware. It controls and allocates hardware

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Computer-Studies

COMPUTER SOFTWARE

COMPUTER SOFTWARE: TYPES, IMPORTANCE, FUNCTIONS AND OS Computer Software is refers to collection of programs (instructions) that cause the hardware to work. A program is a written instruction for a computer to perform a specific task. These are thousands of programs that one can run on a computer. For instance, a graphic program can be

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Computer-Studies

PROCESS OF INFORMATION TRANSMISSION

Information Transmission is the process of transferring information from one place to another. There are many ways by which information could by passed across to somebody or group of people. The major methods are: Ancient Method Modern Method Ancient Method In the olden day information could be passed from one to another through different means

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Computer-Studies

COMPONENTS OF COMPUTER (OUTPUT DEVICES)

OUTPUT DEVICES These are hardware components used to obtain results from computer after processing. They convert data from machine-readable format into human readable format. Examples of output devices are monitor, printer, speaker, projector, plotter, etc. MONITOR This is an output device that displays the result of processing on the screen. It resembles a T.V set

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Computer-Studies

NUMBER BASES

NUMBER BASES CONVERSION OF OTHER BASED TO DECIMAL SYSTEM To convert numbers in other bases to denary system, expand the given number in powers of its base and evaluate. Examples 1) Convert the following numbers to base ten (i) 10012 (ii) 255eight (iii) 35416 (i) 10012 = 1 x 23 + 0 x 22 +

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Computer-Studies

CLASSIFICATION OF COMPUTERS

Computers can be classified based on the following criteria Development of technology (by generation) Principle of operation (by type) Storage capacity or by configuration (by size) Degree of versatility (by purpose)   Classification by types Computers can be classified into three major types based on principles of operations. The three types are Digital computer Analog

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Computer-Studies

GENERATIONS OF COMPUTER

GENERATIONS OF COMPUTER A generation is often referred to the state of improvement in the development of a product. Generation of computer is the advancement of computer technology from time to time. In every generation, the circuitry has become smaller and more advanced than the previous generation. Each generation of computer is characterized by a

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Computer-Studies

Concept of Data Processing

Data processing is the process of converting raw fact (data) to information (processed data). It embraces the techniques of sorting, relating, interpreting and computing items of data in order to provide meaningful useful information.   Steps in data processing i) Preparation of source document: Here, figures, facts are obtained through different sources like name, age,

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