Monitor, printer, plotter, speaker, and multimedia projector. In many cases, a client or viewer application calls the ghostscript engine to do the rasterization and handles the display of the resulting image itself, but it is also possible to invoke ghostscript directly and select an output device which directly handles displaying the image on screen. A temperature transducer is an example of an analog input device. These scan through very thin slices of the object by the use of xrays, gamma rays and radio frequencies.
An input device is any hardware component that allows a user to enter data and instructions into a computer. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Input and output devices bangladesh open university. Inputoutput devices constitute a major part of a computer system. The concepts are also very clearly understood by seeing at the figures in the chapter. Notes for 3rd class computers input and output devices. The inputoutput system module 2 3 analog devices in contrast to discrete devices, analog devices are input or output devices that provide or receive analog signals. Pdf computer input and output devices ingamule siraji. Student notes page 1 of 7 k aquilina input devices input is any data or instructions entered into the memory of a computer. For example, the image shows an inkjet printer, an output device that can make. These scanned images are then used in computer aided design cad, or sent to a d printer to take a 3d printout. A variety of output devices are used with computer. Nov, 2018 an output device can receive data from another device and generate output with that data, but it cannot send data to another device. Fahad khan an input device is a piece of hardware that is used to enter data into a computer.
Input devices data glovepolhemus a modern attempt to provide the user with more degrees of freedom common in virtual reality applications polyhemus can provide six degrees of freedom rotation and translation head mounted display although primary a display device, it can also track position and orientation like polhemus space ball six degrees of freedom sphere. Monitor is the most commonly used output device used to display results of processing. It gives a detailed listing of the various types of input devices and the output devise. Many of these are less complex versions of io devices that have been available for larger computer systems. Impact printers nonimpact printers impact printers the impact printers print the characters by striking them on the ribbon which is then pressed on the paper. Output devices output devices and computers i table i. Most computer data output that is meant for humans is in the form of audio or video. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. How it shows you what it is doing output devices translate the computers output into the form understandable by users. Monitor monitor is perhaps the most important output device because people interact. They are divided into two categories 1 manual input devices devices that need human involvement to input data. They are required to enter data and instructions in a computer so that the computer can process that data and provide the result to the user.
Computer dictionary definition of what output device means, including. Thus, most output devices used by humans are in these categories. Printer is an output device, which is used to print information on paper. Explain different types of output devices perfect computer. Complete o level computer science 2210 guide, latest past papers yearly and topical, all latest computer science o level notes compiled from all web at one place for you. Input devices as well as output devices are a neccessity in order to ensure that data is entered into a computer to be processed and the results output. Crt monitor, tftlcd monitor, ipslcd monitor, led monitor, touch screen as an output device, multimedia projector, laser printer, inkjet printer, dot matrix printer, wide format printer, 3d printer, speakers. The devices are usually used for display, projection, or for physical reproduction. What is the difference between an input and output device. Once data has been input into a computer system and processed, it is now useful information. Now a day computer is one of the most important field for every examinations. This is the most common output device connected with the computer to display the processed information. It forms images from tiny dots, called pixels that are arranged in a rectangular form.
Input devices these get data into the computer processor this does something with the data to make it useful information output devicesthese show the results of processing. Play the magician hat game and identify the input and output in it. Computer devices computer input and output devices 992019 designed by. Parts of a computer class iii, iv and v thinking of. A number of inputoutput devices are used with many types of microcomputers. An output device can be used to display or print the intermediate or final results performed by computer. Following are some of the important output devices used in a computer. Computer is fed with a lot of data to be processed and organised. Jan 05, 2017 the devices which are used to display the results or information are called output devices. The size of a monitor is measured in inches diagonally across the screen. When you have the device type zpdf1 you can create an output device using this device type and access method ll print locally. Identify your body parts that can be compared to computer parts.
Input devices o level computer science 2210 prepared by. The devices which are used to input the data and the programs in the computer are known as input devices. Following are few of the important output devices which are used in a computer. The purpose of the output devices is to translate data and information from electrical impulses to a humanreadable format. The unit 4 presents the information of input and output devices. Any hardware component that can convey information to a user. Free notes for 3rd class computers input and output devices. When any mathematical calculation or decisionlogic needs to be carried out, the instruction is passed on to the alu. Monitor receives data from a computer output and displays that information as text and images for users to view. An output device is any device used to send data from a computer to another device or user. A color monitor can display from 16 to over 1 million different colors.
In this section you will learn about the different types of output devices that are commonly in use. Input devices data glovepolhemus a modern attempt to provide the user with more degrees of freedom common in virtual reality applications polyhemus can provide six degrees of freedom rotation and translation head mounted display although primary a display device, it can also track position and orientation like polhemus space ball. There are many examples of output devices, each with their own benefits and drawbacks. Input and output devices 3 lecture outline output devices visual displays audio output tactile and haptic output input devices discrete event devices continuous event devices combination devices speech input the first part of the lecture will describe a number of output devices that stimulate the.
The devices that can be used to perform both functions input and output are called dual devices. It forms images from tiny dots, called pixels that are. Analog signals are continuous and can have any number of statesnot just two, as with discrete digital signals. Output device can produce the final product of machine processing into a form usable by humans. The sharpness of the image depends upon the number of pixels. Monitors, commonly called as visual display unit vdu, are the main output device of a computer. Theory notes output devices audiovisual devices crt monitor a monitor displays text and image data passed to it by the computer. The data that has been processed into a useful form is called output. Examples include monitors, projectors, speakers, headphones and printers.
Devices input and output unit 4 input output devices. Input is usually given by clicking the mouse or typing on the keyboard. Without io devices, a user cannot communicate with the computer. An output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. With the help of a dual purpose device, we can enter data into computer as well as. For example, the image shows an inkjet printer, an output device that can make a hard copy of anything shown on the monitor. Monitor printer speaker headphone monitor a monitor is an output device similar. Computer science paper 1 notes o level computer science.
Monitors, printer, plotters, visual display unit vdu, liquid crystal display lcd. Dec 29, 2016 monitor is an output device which is used for producing softcopy output. B alu arithmetic logic unit think of the alu as the logical part of the brain. The chapter has given an introduction to the inputoutput devices. Crt monitors are heavy and they take up a lot of desk space. So dear reader i have provided top expected gk questions from input and output device of computer. These devices are also called dual purpose devices or both inputoutput devices.
Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. Input and output devices introduction the unit 4 presents the information of input and output devices. Output is the result we get through output devices. About input and output devices some examples of input and output devices lesson 2 input and output devices input devices allow us to send information to the computer. The following is a list of the most common input devices which are nowadays found in a computer system. Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are.
Hardcopy output refers to printed output printed on the paper or some material that can be touched and carried for being shown to others. Monitors and printers are two of the most commonlyknown output. The objective of output devices is to turn computer information into a human friendlyreadable form. Output devices are those devices which display the required result in simple words which display the final result.
Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. Output generated by output device classified into two types. Monitor and the printer are the commonly used output devices. Still running wso f graphics supported computer used only to support output device, not to run tex at this installation. Device that transmits and receives documents over telephone lines p. Input and output devices school of information technology. Input devices pointing devices keyboard optical input devices audio input device video inpu device. Device that takes image from a computer screen and projects it onto a larger screen p. Crt monitor, tftlcd monitor, ipslcd monitor, led monitor, touch screen as an output device, multimedia projector, laser printer, inkjet printer, dot matrix printer, wide format printer, 3d.
An output device is an electromechanical device which accepts data from a computer and translates them into a human acceptable form. The output device provides the output of data or information. Keyboard is used in the input phase of a computerbased information system. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to. Ingamule siraji 1 a computer is an electronic device that works. Output devices notes on data entry for nios online course.
The audio output is the ability of the computer to output sound. Monitors and printers are two of the most commonly used output devices used with a computer. In general, the more pixels often expressed in dots per inch, the sharper the image. Ghostscript is often used for screen display of postscript and pdf documents. An output device is any piece of computer hardware equipment which converts information into. When i draw using a mouse, it is an input to the computer.
Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. An output device does not send anything back to the computer. The use of these devices depends on the type and purpose of output. What are dual devices or both input output devices. Most modern monitors can display 1024 by 768 pixels, the svga standard. Characteristics of impact printers are the following. They are required to enter data and instructions in a computer so that the computer can. Mcq input and output device of computer with answers pdf. For example, just as your brain thinks and allows you to do different activities, cpu is the brain on computer and connects the input and output devices. Output deviceoutput devices return processed data that is information, back to the user. Input and output the computer mouse and the keyboard are both hardware devices that allow you to communicate with the computer. Crt monitor, tftlcd monitor, ipslcd monitor, led monitor, touch screen as an output device, multimedia projector, laser printer, inkjet printer, dot matrix printer, wide format printer, 3d printer, speakers, motors, buzzers, heaters, lightslamps. Monitors, commonly called as visual display unit vdu are the main output device of a computer.
They are divided into two categories 1 manual input devices devices that. Pos scanner are hardware devices capable of reading a barcode and printing out the details of the product andor logging that product into a database so a company can easily keep track of its inventory. Nov 16, 2019 an output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. You can view the output on the monitor or you can print it on a paper using a printer. Output devices are pieces of computer hardware used to communicate the results of data processing performed by a computer.
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