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. Input devices bring information into the computer and output device send. The devices are usually used for display, projection, or for physical reproduction. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. An input device is a piece of hardware that is used to enter data into a computer. It is most widely used input device to enter data and instructions into the computer. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. Hmds also put a strain on the types of input devices that can be used since the user cannot physically see the device in order to use it. Speaker act output device and microphone act as input. In this way we get results by the pc output devices. What are different types of input devices with examples. The input and output sections are where the processor receives information from external devices and communicates information to external devices. 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. A touchpad most commonly found on computer laptops computer brand doesnt matter.
Top 50 input output questions for ibps clerk mains 2018. The distinction between output devices and input devices becomes even. 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. An output device works by receiving a signal from the computer and using that signal to perform a task to display the output. The devices which we use to give the command to a computer to perform certain functions are called input devices of a computer.
Following are few of the important output devices which are used in a computer. Both output and input devices are examples of auxiliary or peripheral devices. This type of keyboard is available with most mainframe computer terminals or the expensive microcomputer systems. Monitor led, lcd, crt etc printers all types lcd projection panels. There are many other ways a computer could output data. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse. The inputs might thus be from switches, as illustrated in figure 1. Headsets headset consists of speakers and microphone. An input device can be defined as an electromechanical devices that allows the user to feed information or data into the computer for analysis, storage and give command to the computer. 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. A standard output device is the computer monitor, which displays text, images, and user interface elements by lighting up thousands of pixels with different colors.
Computer cannot understand our language because it understands only machine language and it can be possible using some devices called input devices. When we work with a computer, we enter data and give instructions to the computer by using these devices. Touch screen few years old, when it comes to consumer availability. The devices which are used to input the data and the programs in the computer are known as input devices. For example, below is a basic list of steps of how an output device works. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. This type of input device can is normally found on cell phones, pdas, tablet pcs, and video games etc.
Various types of input devices can be used with the computer depending upon the type of data you want to enter in the computer, e. Any device has to be connected to the cpu to receive or send information. On a computer keyboard input device, if you type h, it sends inputs a signal to the computer. Output devices types of monitor lightemitting diode led less space lighter very expensive provide higher contrast and better viewing angles than lcd monitor. It only processes the information given by the input devices and sends the result to the output devices. Since the whole device is not moved, a track ball requires less space than a mouse. These components include input devices,output devices,and communication devices. Monitors may be monochrome that will display results.
This is a ball which is half inserted and by moving fingers on ball, pointer can be moved. All io devices, however, do not send and receive the same. In computing, an input device is any peripheral piece of computer hardware equipment used to provide data and control. Input and output devices introduction the unit 4 presents the information of input and output devices. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer.
In computing, an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Input devices input is any data or instructions entered into the memory of a computer. Monitor, printer, plotter, speaker, and multimedia projector. Touchpad allows to use all the features as you do with a computer mouse trackpoint. Pdf computer input and output devices ingamule siraji. For example, the speakers of a multimedia computer system are directly connected to a device controller called an audio card such as a soundblaster, which in turn is connected to the. Generally input devices are manual or direct data entry devices. 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. Computer input, processing, output and storage devices. Input output devices list with their functions pcguide4u. An input device is any tool device for entering information into a computer. The scanner converts any type of printed or written information including. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music.
Output define the four categories of output identify the different types of display devices describe factors that affect the quality of a display device identify monitor ergonomic issues explain the differences among various types of printers describe the uses of speakers and headsets identify the purpose of data projectors, fax machines, and. A track ball comes in various shapes like a ball, a button and a square. Pictures on monitor are formed with picture elements called pixel. Some of the devices by each category, that i find latest, are. Central processing unit, input devices, output devices, main memory, arithmetic and logic unit alu, control unit cu, secondary or auxilliary storage devicesbacking storedisk storage. A computer monitor with a calculator program displayed. Inputoutput devices are required for users to communicate with the computer. The devices which are used to give data and instructions to the computer are called input devices. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. The most common input device of a computer is a keyboard which is used to give instructions to the cpu. This data is given to the computer by using particular devices named computer input devices. Inputoutput devices and interaction department of computer. They are directly connected to an electronic module inside the systems unit called a device controller. List of input devices, output devices and both input.
An input device is any peripheral used to provide data and control signals to a computer. So dear reader i have provided top expected gk questions from input and output device of computer. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. It forms images from tiny dots, called pixels that are arranged in a rectangular form. Input and output devices department of computer science.
Microphone is an input device to input sound that is then stored in digital form. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. Output devices types of monitor cathode ray tube crt liquid crystal display lcd lightemitting diode led csca0101 computing basics 10 output devices types of monitor. So that we can say in simple term, a computer input device is a hardware component that is used to enter data and instruction into the computer to perform specific task. Computer inputoutput ports and interfaces 1 terms and abbreviations. A monochrome monitor is a type of crt computer display which was very. What are some examples of the latest input and output.
Computer devices includes, input, output, processing and storage. A computer contain many electric,electronic,and mechanical components known as hardware. The inputoutput system 2 module 2 21 types of inputoutput devices a micrologix plc uses its input and output interfaces to connect with field inputoutput devices. Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones input devices can be categorized based on. 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. The following is a list of the most common input devices which are nowadays found in a computer system. An input devices converts the data and instructions into binary form that computer can understand. It forms images from tiny dots, called pixels that are. Now a day computer is one of the most important field for every examinations. Cpu controls all the connected input and output devices. Monitor is the most commonly used output device used to display results of processing. Input output interface an overview sciencedirect topics. Top 50 inputoutput reasoning questions for ibps clerk mains 2018 free pdf download.
The computer will be of no use unless it is able to communicate with the outside world. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. Input and output devices bangladesh open university. Broaden your knowledge of types of computer input devices by reading the lesson entitled computer input devices. Many of these are less complex versions of io devices that have been available for larger computer systems. These devices convert data and instructions into the form that can be easily recognized by. Pdf input output storages devices in computers researchgate. Main memory holds data and instructions being processed by. A touchpad or trackpad is a kind of input device that has a limited area wherein you can point, scroll, click and swipe. Input devices accept data and instructions from the user. Mcq input and output device of computer with answers pdf. Output device can produce the final product of machine processing into a form usable by humans. Monitors and printers are two of the most commonlyknown output. A computer has two types of devices which help the user to enter data into the.
The screen can be touched either with the help of fingers or a stylus. Facsimile fax it has scanner to scan the document and also. A number of inputoutput devices are used with many types of microcomputers. This transformation is performed by input interface. A number of input output devices are used with many types of microcomputers. An input device is any hardware component that allows a user to enter data and instructions into a computer.
Devices input and output unit 4 input output devices. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Input devices keyboard one of the primary input devices used with a computer. Input devices pointing devices keyboard optical input devices audio input device video inpu device 7. Text consists of characters letters, numbers, punctuation marks, or any other symbol requiring one byte of computer storage space that are used to create words, sentences, and paragraphs. It has function keys f1, f2,f12 used to perform specific tasks. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. Input and output devices school of computer science and. Output types some types of output are text, graphics, tactile, audio, and video.
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