Sections of the Keyboard The Keyboard is divided into five sections; I. Alphanumeric keys( Alphabet and Numbers): consist of alphabet (a-z) and numbers (0-9) II. Function keys F1-f12: they are twelve in number f1-F12 and are located horizontally on the first row of the enhanced keyboards. On standard keyboard they are labeled F1-F10 III. Control […]
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MEANING OF DATA Raw facts or entity which no meaning has been attached to because it has not been processed is referred to as DATA. Data could be facts about people, places, things and their activities. When data passes through some manipulation activities in order to organize them to be meaningful or to achieve a
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PRINTER There are three types of computer printers: Inkjet: Inkjet printers spray a jet of special ink on the surface to create an ink under control of electric field. Ink jet is used where the volume of print out is not very large. Dot matrix: A Dot matrix printer has a print head that has
OUTPUT DEVICES Computer output device is a device that releases the processed data from the computer to either the user or any of the storage devices. There are many devices that produce data in different forms such as audio, Visual and hard copy. Computer output devices are type of peripheral devices connected to a computer,
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Sections of the Keyboard The Keyboard is divided into five sections; I. Alphanumeric keys( Alphabet and Numbers): consist of alphabet (a-z) and numbers (0-9) II. Function keys F1-f12: they are twelve in number f1-F12 and are located horizontally on the first row of the enhanced keyboards. On standard keyboard they are labeled F1-F10 III. Control
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An Input Device is any computer hardware equipment used to feed or send data into the main storage of a computer for processing. Many input devices can be classified into two: Ø Modality of input( e.g mechanical motion, audio, visual etc) Ø The input is discrete (keyboard) or continuous (mouse’s position) TYPES OF INPUT DEVICES
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HISTORICAL DEVELOPMENT OF COMPUTING DEVICES( 20th Century) These generations of computers witnessed the first set of computers that used vacuum tubes for circuitry and magnetic drum for memory and were very big taking up the whole room. They were very expensive to use and in addition made use of lot of heat. The heat generated
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HISTORICAL DEVELOPMENT OF COMPUTING DEVICES 2 (PRE COMPUTER AGE TO 19TH CENTURY) JACQUARD’S LOOM (FEATURES, COMPONENT AND USES) The Jacquard loom is a mechanical loom, invented by Joseph Marie Jacquard in 1801. This loom simplifies the process of manufacturing textiles with complex patterns such as brocade, damask and matelassé. The loom is controlled by punched
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HISTORICAL DEVELOPMENT OF COMPUTING DEVICES The origin of computers dates back to when our fore fathers used their early calculating devices to count. For example Counting with fingers and toes: calculations were done by our fore fathers with their toes and fingers before the invention of computers. Counting with pebbles: when counting with fingers became
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Definition of Computer hardware This refers to the physical units or components which make up the computer configuration. The term hardware refers to the tangible parts of a computer that can be seen and touched. Examples of hardware components Monitor Motherboard CPU( Central Processing Unit) RAM( Random Access Memory) Expansion Cards Power Supply Optical Disk
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