JSS 1 Computer Studies/Information Technology (1st, 2nd & 3rd Term)

Computer-Studies

DATA PROCESSING

Definition of Data Processing Data processing is the process of producing meaningful information by collecting all items of data together and performing operations on them to extract information. Data processing can also be described as a series of actions or operations that convert or manipulate data into useful information. Data processing involves the systematic recording,

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Computer-Studies

Generations of Computers

Generations of Computers Generation of computers is the developmental stages that the computer has gone through. There are 5 generations of computers and their accompanying innovations. First Generation – Vacuum Tubes (1940 – 1956) First generation computers were those manufactured between 1940s and 1950s. The computers used the stored program concept. First generation computers were associated

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Computer-Studies

ELECTRO-MECHANICAL COUNTING DEVICES

Electro-mechanical Counting Devices JOSEPH JACQUARD’S LOOM The Jacquard machine is a device fitted to a power loom that simplifies the process of manufacturing textiles with such complex patterns as brocade, damask and matelassé. It was invented by Joseph Marie Jacquard in 1804. The loom was controlled by a chain of cards, a number of punched

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Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTERS

Electro-mechanical Counting Devices These are counting devices that could be operated both electrically and mechanically. Electro-mechanical devices include the following: Speeding Clock Blaise Pascal machine Gottfried Leibniz Machine   SPEEDING CLOCK OR CALCULATING CLOCK In 1623 and 1624, reported his design and construction of what he referred to as an arithmetical instrument that he has

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HISTORICAL DEVELOPMENT OF COMPUTERS

HISTORICAL DEVELOPMENT OF COMPUTERS: EARLY COUNTING DEVICES Definition and Examples of Early Counting Devices Early counting devices are devices that were used in the early days to perform arithmetic operations such as addition of numbers, subtraction and multiplication. These devices were used for the usual barter trade of the early days. Examples of early counting devices are fingers, toes, stones, sticks, pebbles, cowries among others.

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Computer-Studies

MODERN METHODS OF TRANSMITTING INFORMATION

MODERN METHODS OF TRANSMITTING INFORMATION With modern inventions in communication, many ancient methods have been replaced with more efficient modern ways of transmitting information. These include the following: Printing Telephone Global Systems for Mobile communication (GSM) Telex Radio Television Facsimile (Fax) Satellite Internet, etc. Printing Information transmission by printing involves the production of information on

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Computer-Studies

INFORMATION TRANSMISSION

Definition of Information This is data already processed into a meaningful form for decision making. Information conveys meaning and is useful to one or more people. Definition of Transmission This is the process of transferring something from one location to another location, from one person to another person or from one device to another device.

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Computer-Studies

HEALTH CONCERNS OF COMPUTER USE

Users are a key component in any information system. Therefore, protecting users is just as important as protecting hardware, software and data. The widespread use of computers have led to some important health concerns which are; Repetitive Strain Injury (RSI) Computer related RSI’s are the largest job related injury and illness in the United States

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Computer-Studies

ICT AND SOCIETY

Many of us go through our daily routine without noticing how many times we come into contact with computers. Computer technology has become such a part of our daily lives that if it were taken away we would lead radically different lives. Information communication technology involves the use of modern communication channels to convey information.

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Computer-Studies

ICT APPLICATION IN EVERYDAY LIFE

Meaning of ICT ICT is an acronym which stands for Information and Communication Technology. It can be described as a diverse set of technological tools and resources used to communicate and to create, disseminate, store and manage information. These technologies include; (i) Computer (ii) Internet (iii) Broadcasting technologies (radio and television) (iv) Telephone   Uses

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Computer-Studies

COMPUTER ROOM MANAGEMENT ETHICS

Definition of Computer Room Computer room is a room specially created for keeping computers and other peripheral devices. It is also called computer laboratory. In designing this room, the components of a computer room must be put into consideration. Components of a Computer Room Computer system Furniture (computer tables and chairs) Electric surge protector Stabilizer

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Business Studies

PARTS OF COMPUTER KEYBOARD

THE COMPUTER A computer is an electronic device that can accept data and process data in order to get the required information. The computer receives data through the input device, and it processes the data to generate 1information which it produces and displays through the output device.   PARTS OF THE COMPUTER A computer has

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Computer-Studies

FEATURES OF A COMPUTER

TYPES OF MICRO COMPUTER Micro computer is the smallest and the cheapest class of computers built for special purposes, e.g. for use in clocks, cameras etc.  Micro computer contains between ten thousand and two million bytes of internal memory locations, a micro processor and can allow few input/output devices to be attached to it.  Micro

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