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Output Devices

Computer-Studies

Output Devices II

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 a series of steel pins. It uses ink ribbon to create images on surface. LaserJet: uses xerography in line with electronically controlled laser beam to produce characters on the photo conductive surface of rotating drum. EXAMPLES OF PRINTERS Thermal Printers: These are non-impact, they are very slow. They form characters by burning them on specifically treated papers Electrostatic Printer: This form of printers work by charging paper electrically. The paper then passes through a toner solution. Particles of ink adhere to the charged areas of the paper. Dot Matrix Printers: These use a dot matrix… Read More »Output Devices II

Computer-Studies

Computer Output Devices

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, using cables or a wireless network. TYPES OF OUTPUT DEVICE Ø  Printer Ø  Speaker Ø  Headphones Ø  Monitor The Monitor Monitor is an output device. Monitor is also known as screen, Visual Display Unit, Cathode Ray tube (CRT) or console. A monitor looks like TV screen and it is used for viewing the result of the operation going on. This is the major function of the monitor in the computer system. Data entered into the system is visible on the screen. Although, the data appears on the screen directly, the real fact is that data… Read More »Computer Output Devices

Computer (Primary Classes)

Computer as an IPO System

A computer is an electronic machine that works under the instructions given by us. In order to perform any work, a computer follows three steps: Input – Process – Output. It can accept data (Input), manipulate the data according to specified rules (Process) and produce results as information (Output). To put it more clearly: 1. The computer accepts the data that we feed into it through an input device like the keyboard or mouse.   The computer processes the data into information through a processor called Central Processing Unit (CPU). 3. The computer displays the information through an output device like the monitor or the printer.   Input Devices Input: – Input is the raw data entered into a computer from the input devices. It is the collection of numbers, letters, images, etc. Keyboard, Mouse, scanner, webcam, etc. is some examples of the input devices.   Devices which transfer data,… Read More »Computer as an IPO System

Computer-Studies

COMPUTER OUTPUT DEVICES

AN OUTPUT DEVICES PRINTER: This is an output device, which can be used to produce Hardcopy output.   TYPES OF PRINTER The types of printer are listed below; Impact Printers Non-impact Printers   IMPACT PRINTERS This is a type of printer, which usually make contact with paper while printing. It is usually noisy. Examples include: Daisy Wheel Printer Dot Matrix Printer Line Printer   NON-IMPACT PRINTERS This is a type of printer, which do not make contact with paper while printing. It is usually less noisy than the impact printers. Examples include: Ink Jet Printer Laser Printer Thermal Printer   EVALUATION: List the types of printers known to you. What are the major differences between impact and non-impact printer.   ASSIGNMENT: Search for the real image of both printers yourself   See also: COMPUTER OUTPUT DEVICES COMPUTER INPUT DEVICES COMPUTER INPUT DEVICES HISTORICAL DEVELOPMENT OF COMPUTING DEVICES HISTORICAL DEVELOPMENT OF… Read More »COMPUTER OUTPUT DEVICES

Computer-Studies

OUTPUT DEVICES

OUTPUT DEVICES: An output device is any piece of computer hardware that is used to output data that has been previously entered into a computer or similar processing device. An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as computer) which converts the electronically generated information into human-readable form. Read Also: CLASSIFICATION OF COMPUTER BY TYPES   Examples of output devices Monitor Printer Plotter Projector Speaker Headphone   1. Monitor : a computer monitor is an electronic device that shows pictures. Monitors often look similar to televisions. The main difference between a monitor and a television is that a monitor does not have a television tuner to change channels. Monitors often have higher display resolution than television. 2. Printer: A printer is a device that accepts text and graphic output from a computer… Read More »OUTPUT DEVICES

Computer-Studies

OUTPUT DEVICES

OUTPUT DEVICES:  There are the physical components of a computer used to obtain results from computer after processing. There devices convert data from machine-readable format into human-readable format. Examples: (a) Monitor (b) Printer (c) Plotter (d) Speaker (e) Projector (f) Microfilm, etc.   (a) MONITOR: This is an output device that displays the result of processing on the screen. It looks like a television set and it’s usually called a Visual Display Unit or simply the Screen. The output obtained from a monitor is called the softcopy since this output can only be seen.   TYPES OF MONITOR Monitor can be classified in two categories. These are based on (1) Shape (2) The number of colour it displays based on the shape. There are two types (3) (a) CRT (Cathode Ray Tube) monitor: There are very bulky but are usually less expensive than the LCD monitor. They are more precise… Read More »OUTPUT DEVICES

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 and it’s also called a Visual Display Unit (VDU) or simple the screen. The output obtained from a monitor is called the softcopy since this output can only be seen. Types of monitors Monitors can be classified using two categories. These are: The Shape The number of colours it displays The shape CRT (Cathode Ray Tube) monitor LCD (Liquid Crystal Display) monitor CRT Monitor These are very bulky but are normally expensive than LCD monitor. They are more precise in colour presentation.   LCD Monitor These have flat screen and are lighter in weight but… Read More »COMPONENTS OF COMPUTER (OUTPUT DEVICES)

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