Input device is a device through which data and instruction are entered into computer system. Dear aspirant, as you know computer is very important section to get a good score for bank exam. Six widely used input devices are the keyboard, mouse, microphone, scanner, digital camera and pc video camera. Explain different types of output devices perfect computer. An input device is a hardware device that is used to provide input data. Input devices an input device is any hardware component that allows you to enter data and instructions onto a computer.
Top 50 input output questions for ibps clerk mains 2018. Output devices output devices are used to receive information from the computer either in softcopy or hard copy. Monitor, printer, plotter, speaker, and multimedia projector. The computer transmits data to the drive, where it is saved and can be later accessed. They are divided into two categories 1 manual input devices devices that need human involvement to input data 2 automatic input devices devices that do not need human involvement to input data. In general, the more pixels often expressed in dots per inch, the sharper the image.
This transformation is performed by input interface. The chapter has given an introduction to the inputoutput devices. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. A sheet of paper can be used to both record ideas input and display them output. Analog signals are continuous and can have any number of statesnot just two, as with discrete digital signals. Examples of io devices are cd drives, dvd drives, usb drives, hard disk drives hdds, and floppy disk drives. Input and output devices school of information technology. Input devices keyboard one of the primary input devices used with a computer.
Devices input and output unit 4 input output devices. The devices which are used to input the data and the programs in the computer are known as input devices. To enter information and issue commands, you use input devices. Some commonly used inputoutput devices are listed in table below.
An input device helps you to communicate with the computer. A color monitor can display from 16 to over 1 million different colors. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. Nov 27, 2018 input output device based mcq mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Each iop controls and manage the input output tasks. Now a day computer is one of the most important field for every examinations.
So dear reader i have provided top expected gk questions from input and output device of computer. Free notes for 3rd class computers input and output devices. Characteristics of impact printers are the following. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. Input devices are used to give data and instructions to the computer. 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. 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. Nov, 2018 however, some devices can accept input and display output, and they are referred to as io devices input output devices. 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. Most modern monitors can display 1024 by 768 pixels, the svga standard. Output device can produce the final product of machine processing into a form usable by humans. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. Introduction input and output devices are very important for computers, without them,computers will not be as functional. Following are few of the important output devices which are used in a computer.
By inputoutput analysis i mean the latter two of these three types of inputoutput work, and it is to them that this paper is devoted. An input device is any hardware component that allows a user to enter data and instructions into a computer. Once data has been input into a computer system and processed, it is now useful information. The purpose of the output devices is to translate data and information from electrical impulses to a humanreadable format. Keyboard and mouse are the most commonly used input devices. Dec 29, 2016 an input devices converts the data and instructions into binary form that computer can understand. Mcq input and output device of computer with answers pdf. The output device provides the output of data or information.
Output devices are those devices which display the required result in simple words to the users. When i draw using a mouse, it is an input to the computer. Sound card plays contents of digitized recordings, speakers attached to sound card. 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.
It gives a detailed listing of the various types of input devices and the output devise. Keyboard the most common and very popular input device which helps in inputting data to the computer. Inputoutput devices are required for users to communicate with the computer. Input devices pointing devices keyboard optical input devices audio input device video inpu device. Input devices include keyboards, mouse, digital camera and light pen.
When the computer gives the printout, it is the output. The iop is similar to cpu except that it handles only the details of io processing. Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are. This chapter will show you how inputoutput devices work. Any device has to be connected to the cpu to receive or send information. Ingamule siraji 1 a computer is an electronic device that works. 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. There are two other commonly used mechanisms for implementing io operations. A temperature transducer is an example of an analog input device. Inputoutput devices and interaction computer science tufts. An inputoutput processor iop is a processor with direct memory access capability. Input and output devices input devices allow us to send information to the computer. Dear readers, ibps clerk 2018 examination is approaching very shortly, after seeing the analysis of this year ibps exams you all may conclude that more practice will be need to manage the time efficiently and to score good marks.
An input devices converts the data and instructions into binary form that computer can understand. Student notes page 1 of 7 k aquilina input devices input is any data or instructions entered into the memory of a computer. Virtually all external devices have buffers, control signals, status signals, and data bits. Input and output devices 2 goals provide practical introduction to the hardware required for virtual environment and 3d interaction examine common and state of the art io devices advantages and disadvantages discuss how different io devices affect interface design.
Computer devices computer input and output devices 992019 designed by. Monitor and the printer are the commonly used output devices. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. Notes for 3rd class computers input and output devices. In this section you will learn about the different types of output devices that are commonly in use.
Pdf computer input and output devices ingamule siraji. Each iop controls and manage the inputoutput tasks. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Cpu controls all the connected input and output devices. For example, as you can see in the top half of the image, a keyboard sends electrical signals, which are received by the computer as input.
Microphone is an input device to input sound that is then stored in digital form. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. It forms images from tiny dots, called pixels that are arranged in a rectangular form. An input device is any peripheral used to provide data and control signals to a computer. Many of these are less complex versions of io devices that have been available for larger computer systems. What is the difference between an input and output device. An output device is an electromechanical device which accepts data from a computer. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. 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. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys. 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. The devices are usually used for display, projection, or for physical reproduction. The keyboard is the most common and widely used input device. The size of a monitor is measured in inches diagonally across the screen.
Thus, a computer must have a system to receive information from the outside world and must be able to communicate results to the external world. An input device is a hardware device that is used to provide input data instructions to a computer so that it can be processed. Printer is an output device, which is used to print information on paper. Pictures on monitor are formed with picture elements called pixel. Video input devices are used to entering full motion video recording into a computer. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. The data entered through input device can be some text, some graphical image or symbol, sound etc, depending on the form of the raw data the various input devices are available.
Monitors and printers are two of the most commonlyknown output. Microphone gives sound or voice input to the computer. The following is a list of the most common input devices which are nowadays found in a computer system. Conscious output is muscularly mediated communications. Chapter 5 inputoutput devices computer science igcse. The distinction between output devices and input devices becomes even more blurred in the real world. Output devices are used to display the result or information on the computer. Physics notes full book pdf mathematics notes full book pdf biology notes full book pdf chemistry notes. The audio output is the ability of the computer to output sound. The input devices translate the information into the form understandable by computer. Jan 05, 2017 input devices are used to give data and instructions to the computer. An input device is any tool device for entering information into a computer.
Input is usually given by clicking the mouse or typing on the keyboard. These scanned images are then used in computer aided design cad, or sent to a d printer to take a 3d printout. Input and output devices of computer computer notes. Output devices are part of the 4 main hardware components of a computer system. An input output processor iop is a processor with direct memory access capability.
Input or output devices that are connected to computer are called peripheral devices. Inputoutput devices dont only produce output, but can also be used as storage and input devices. Keyboard keyboard is the most common input device used for entering text data directly into a computer. Monitor is the most commonly used output device used to display results of processing. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. Data that has been processed into a useful form, called information p. It forms images from tiny dots, called pixels that are. An input device is a piece of hardware that is used to enter data into a computer. It only processes the information given by the input devices and sends the result to the output devices. These scan through very thin slices of the object by the use of xrays, gamma rays and radio frequencies.
Monitors may be monochrome that will display results. Output devices monitor printer audio output projector 16. Output devices an output device is any hardware component that conveys information to one or more people. 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. Aug 27, 2018 as you know computer is very important section to get a good score for bank exam. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to.
These devices are designed to read information into or out of the memory unit upon command from the cpu and are considered to be the part of computer system. Input and output bridge the chasm between a computers inner world of bits, and the real world perceptible to the. Short questionsopen long questionopen 9th class notes links. Inputoutput modules overview inputoutput io modules provide physical interface between plc processor and field devices. 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. In this, the computer system is divided into a memory unit and number of processors. Top 50 inputoutput reasoning questions for ibps clerk mains 2018 free pdf download. External devices are not connected directly to the system bus because they have a wide range of control logics, as well as data transfer speeds and formats. Input device translates words, sounds images, and actions that people understand into symbols that the system unit can process. The need for input and output devices teachers notes time min activity further notes 5 introduce the topic. The distinction between output devices and input devices becomes even. Any data or instruction entered into the computer is known as input.