Input output devices are usually called io devices. Apart from alphabet and numeral keys, it has other function keys for performing different functions. 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. The central processing unit controls the whole system by coordinating and organizing all the operations of the computer. Most devices are only input devices or output devices, as they can.
Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. This transformation is performed by input interface. List of input devices, output devices and both input output. Generally input devices are manual or direct data entry devices. It only processes the information given by the input devices and sends the result to the output devices. Dec 29, 2016 an input devices converts the data and instructions into binary form that computer can understand. While the devices whose main function is to give instructions and data to the computer are called input devices.
Printer is the most important output device, which is used to print data on paper. Input and output devices bangladesh open university. Cpu controls all the connected input and output devices. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. Inputoutput devices are required for users to communicate with the computer. These devices convert input data and instructions into a suitable binary form such as ascii, which can be acceptable by the computer. 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.
Computer cannot understand our language because it understands only machine language and it can be possible using some devices called input devices. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. These devices convert data and instructions into the form that can be easily recognized by the computer. A sheet of paper can be used to both record ideas input and display them output. Various refresh interval periods and two operating frequencies, 5 mhz for. 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. Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are.
The devices that are used to display the information of the results are known as output devices. Output device display data from the memory of the computer. Output devices can adopt different shapes and styles, which are used to give the output of the processing of data. The data can be in the form of text, graphics, sound, and text. Explain different types of output devices perfect computer. These devices are in the stage of experimenting and development, where various problems like speech should be independent of persons. A computer monitor with a calculator program displayed. Input and output devices input devices allow us to send information to the computer. Input devices accept data and instructions from the user. An input devices converts the data and instructions into binary form that computer can understand. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. Any hardware component used to enter data, programs, commands, and user responses into a computer scanners and reading devices voice input keyboard pointing device video input digital p. Monitor led, lcd, crt etc printers all types lcd projection panels.
In general, the more pixels often expressed in dots per inch, the sharper the image. When you play the game, its various parts are copied into and out of main memory. The chapter has given an introduction to the inputoutput devices. Input output devices list with their functions pcguide4u. Any device has to be connected to the cpu to receive or send information. Diagram of various input and output devices gcse computer. 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. Switches, lamps valves etc common characteristics of io modules removable terminal blocks retractable wiring is connected to the terminal block tilblkil ditth dlterminal block is plugged into the module. Input and output devices introduction the unit 4 presents the information of input and output devices. Output can be text, numeric data, line, polygon, and other objects.
A touchpad or trackpad is a kind of input device that has a limited area wherein you can point, scroll, click and swipe. The input devices are the hardware that is used to transfer transfers input to the computer. It can be text, graphics, tactile, audio, and video some of the output devices are visual display units vdu i. Input devices the devices which are used to give data and instructions to the computer are called input devices.
Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. A touchpad most commonly found on computer laptops computer brand doesnt matter. List of input devices, output devices and both input. They are directly connected to an electronic module inside the systems unit called a device controller. Input and output devices allow the computer system to interact with the outside world by moving data into and out of the system. 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. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. Input is usually given by clicking the mouse or typing on the keyboard.
A parallel port transmits 8 bits of a byte of data in parallel. Apr 09, 2018 computer input and output devices basic worksheet. Peripheral device, also known as peripheral, computer peripheral,inputoutput device, or inputoutput device, any of various devices including sensors used to enter information and instructions into a computer for storage or processing and to deliver the processed data to a human operator or, in some cases, a machine controlled by the computer. Analog signals are continuous and can have any number of statesnot just two, as with discrete digital signals. Inputoutput modules overview inputoutput io modules provide physical interface between plc processor and field devices. It is an electromechanical device, which accepts data from a computer and translates them into form understand by users. Discuss how different io devices affect interface design.
Output devices projector an output device that can take the display of a computer screen and project a large version of it onto a flat surface. On a computer keyboard input device, if you type h, it sends inputs a signal to the computer. A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. The joystick can be moved in all four directions 992019 designed. Input devices are used to interact with a computer system or used enter data and instructions to the computer. Input devices as well as output devices are a neccessity in order to. It forms images from tiny dots, called pixels that are arranged in a rectangular form. Monitor is the most commonly used output device used to display results of processing. Nov 16, 2019 an output device works by receiving a signal from the computer and using that signal to perform a task to display the output. An output device works by receiving a signal from the computer and using that signal to perform a task to display the output. A computer or laptop keyboard is kind of hardware device that you can use to type data in a computer system. The user enters data by the touch of his finger on different menu options or icons present on touch screen. 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. Input and output devices of computer computer notes.
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. Following are few of the important output devices which are used in a computer. An input device is any hardware component that allows a user to enter data and instructions into a computer. This is to help you have a basic idea about input and output devices. More examples can be given from other subjects as well. Nov 22, 2016 types of devices input devices output devices 5. Microphone is an input device to input sound that is then stored in digital form. Computer devices computer input and output devices 992019 designed. Sound card plays contents of digitized recordings, speakers attached to sound card. Many of these are less complex versions of io devices that have been available for larger computer systems. Facsimile fax it has scanner to scan the document and also.
A number of inputoutput devices are used with many types of microcomputers. The distinction between output devices and input devices becomes even more blurred in the real world. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. It forms images from tiny dots, called pixels that are. When we work with a computer, we enter data and give instructions to the computer by using these devices.
Input devices various hardware devices have been developed to enable the user to interact in the more natural manner. A new type of output device is been developed these days, known as speech synthesizer, a. Today we are going to discuss these devices in detail. It obeys the instructions issued to it by various input devices such as the keyboard and organizes the output. This function is handled by one of the various input devices used in conjunction with the computer. What is the difference between an input and output device. Since the original data is usually not written in a form useful to the computer. Few examples of output devices are printers, projector, plotters, monitor, speakers, head phone, etc. Joysticks are often used to control video games, and usually have one or more pushbuttons whose state can also be read by the computer. Speaker act output device and microphone act as input. Powerful computing devices make multimedia applications possible.
These devices convert data and instructions into the form that can be easily recognized by. They capture and convert input from various analog sources, process and store the digital data, and output in ways that empower users to create, distribute, search, and share information as never before. Guidelines in order to greatly enhance your own knowledge of speakers computer input and output devices basic worksheet. Input devices keyboard one of the primary input devices used with a computer. Input devices input is any data or instructions entered into the memory of a computer.
They are locators and selectors a joystick has two potentiometers, they have been attached to a single lever. 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. In computing, an input device is a peripheral piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or other information appliance. In this lecture we will discuss the various input and output. What are different types of input devices with examples. Input and output devices can also be written as io devices. Inputoutput devices an important part of the data processing operation is entering data into the central processing unit. Jan 05, 2017 input devices the devices which are used to give data and instructions to the computer are called input devices. For example, below is a basic list of steps of how an output device works. Headsets headset consists of speakers and microphone. Most modern monitors can display 1024 by 768 pixels, the svga standard. Input devices pointing devices keyboard optical input devices audio input device video inpu device 7.
Touchpad allows to use all the features as you do with a computer mouse trackpoint. The following is a list of the most common input devices which are nowadays found in a computer system. 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. The most common of all input devices is the keyboard. The system has a capacity of up to ten laram devices. Out put devices are used to display results of processing to the user. The input unit is formed by the input devices attached to the computer. Pdf input output storages devices in computers researchgate. Input devices only allow for input of data to a computer and output devices only receive the output of data from another device. Inputoutput devices and interaction department of computer. Various peripherals can be connected through parallel port, which is a parallel communication physical interface.
The audio output is the ability of the computer to output sound. Nov, 2018 an input device sends information to a computer system for processing, and an output device reproduces or displays the results of that processing. There are many other ways a computer could output data. Devices input and output unit 4 input output devices. Monitor, printer, plotter, speaker, and multimedia projector. Pdf computer input and output devices ingamule siraji. Input and output devices used for computer graphics. A temperature transducer is an example of an analog input device. It is used for transmitting fast data over short distances. Touch screen input output device dual device performs both input and output functions io device in atm and in latest smart phones, touch screen is used to receive input from the user.
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