In computing, inputoutput or io or, informally, io or io is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system. Computer inputoutput ports and interfaces 1 terms and abbreviations. Input and output devices kanwal rekhi school of information. How do you ever wonder how information gets in your computer and how comes out in a form you can use. Input output interface an overview sciencedirect topics. Below we discuss the variety of peripheral devices used for computer input and output. Before a computer can process your data, you need some method to input the data into the machine. They are divided into two categories 1 manual input devices devices that need human involvement to input. Many of these are less complex versions of io devices that have been available for larger computer systems. Headsets headset consists of speakers and microphone. Computer input and output devices fun learning computer. A list of the steps in the information processing cycle.
Output, which provides output to the user from the computer. Input and output devices input and output devices input devices input devices are used to get data into a system. You can view the output on the monitor or you can print it on a paper using a printer. The above pdf is based on input and output devices and contains the following. 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. What is the difference between an input and output device. These devices are used for performing some specific functions. The computing literature often draws a sharp distinction between input and output. The terms input and output are used both as verbs to describe the process of entering or displaying the data, and as nouns referring to the data itself entered into or displayed by the computer. Slide 3 topics information processing cycle what is input. Short for modulatordemodulator, a modem is a hardware device that allows a computer to send and receive information over telephone lines. Input devices o level computer science 2210 prepared by. Facsimile fax it has scanner to scan the document and also. A touch screen is an input output touchsensitive display.
Input and output devices io devices are hardware elements. The devices which are used to input the data and the programs in the computer are known as input devices. Devices such as a keyboard or mouse are examples of input devices. In my last post i have shared about the following job recruitment questions on basic computer technology and internetjob recruitment questions on basic computer technology and internet part1. Input devices input devices any peripheral piece of computer hardware equipment used to provide data and control signals to a computer. Jan 05, 2017 the devices which are used to display the results or information are called output devices. Similarly, when an analog signal is received, the modem converts it back demodulates it to a digital.
An input device is used to bring data into the system. The following is a list of the most common input devices which are nowadays found in a computer system. Revise computer science gcse by testing your knowledge of output devices using our quiz. While the devices whose main function is to give instructions and data to the computer are called input devices. The information processing cycle, in the context of computers and computer processing, has four stages. An input device is any tool device for entering information into a computer. A user presses a key which transfers information to a computer. List of input devices, output devices and both input. 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 number of input output devices are used with many types of microcomputers.
Following are few of the important output devices which are used in a computer. Input, used to interact with, or send data to the computer mouse, keyboards, etc. Devices input and output unit 4 input output devices. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. Fahad khan an input device is a piece of hardware that is used to enter data into a computer.
Output devices monitor printer audio output projector 16. Getting the right input devices for your computer system can make a world of difference in your computers performance and can improve the quality of your time spent at the screen. Fundamental of computer fun and educational video for children easy and simple preschool learning for kids input output devices io devices input devices. For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices. 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. An input device are mechanical device which helps user to input the data in to your computer machine. 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. Aug 29, 2018 fundamental of computer fun and educational video for children easy and simple preschool learning for kids input output devices io devices input devices. Monitor and the printer are the commonly used output devices. In computing, an hyg input device is a piece of faiza computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. An input device for a computer allows you to enter information.
Before an output can be produced by a computer it must have an output device connected to it. When i draw using a mouse, it is an input to the computer. Inputoutput devices and interaction techniques 2004. The inputs might thus be from switches, as illustrated in figure 1. There are various types of input device by which a user can ask computer to solve their query or processes.
Today we are going to discuss these devices in detail. Digitizer is an input device which converts analog information into digital form. Output devices allow us to receive information from the computer. Most devices are only input devices or output devices, as they can. They are divided into two categories 1 manual input devices devices that need human involvement to input data.
The designation of a device as either input or output depends on perspective. The monitor displays the video and graphics information generated by the computer through the video card. It forms images from tiny dots, called pixels that are arranged in a rectangular form. Most computers need some way to input information into them. Presentation on input and output devices slideshare. Input and output devices allow the computer system to interact with the outside world by moving data into and out of the system. Input and output devices introduction the unit 4 presents the information of input and output devices. On a computer keyboard input device, if you type h, it sends inputs a signal to the computer. Jul 22, 2018 computer processing is the means by which computer programs and instructions are being executed. Research computer input and output devices world of invention. All computers have memory that is used to hold the program instructions that the cpu executes. However, at some levels within a computer, some processing devices actually only use three of these stages input, processing and output without the need to store data. When sending a signal, the device converts modulates digital data to an analog audio signal, and transmits it over a telephone line. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media.
The device you use will depend on what form this data takes be it text, sound, artwork, etc. A computer is an electronic device that accepts u ser input data and processes it under the influence of a set of instructions referred to as programs to produce the desired output generally. This is to help you have a basic idea about input and output devices. Computer processing devices are those devices directly responsible for the transformation of data into information. Every computer performs the basic functions of input, processing, storage, output. Input and output devices people at vt computer science. A peripheral is a device that is used to put information into or get information out of the computer. In computing, an input device is any 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. The input data form may be text, sound, video, artwork etc. The devices which are used to display the results or information are called output devices. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. 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 and output devices fun learning computer for. When the computer gives the printout, it is the output. 6979 march 1993 with 4,317 reads how we measure reads. The cpu can also write to and store information in the memory. Apr 18, 2020 quality information about the all computers or laptops, mobiles,tablets, technology and latest electronic gadgets. Input devices only allow for input of data to a computer and output devices only receive the output of data from another device. Input devices standard computer keyboard computer keyboard keys. The computer will be of no use unless it is able to communicate with the outside world. An input device is any hardware component that allows a user to enter data and instructions into a computer. Input and output devices input devices allow us to send information to the computer. The devices are usually used for display, projection, or for physical reproduction. Input output devices questions and answers computer.
Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. 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. Jan 27, 2014 presentation on input and output devices 1. The devices that are used to display the information of the results are known as output devices. Devices for communication between computers, such as modems and network cards, typically perform both input and output operations. Here i am going to share you about list of basic input devices, output devices and both input output devices. Output device can produce the final product of machine processing into a form usable by humans. Speaker act output device and microphone act as input. Scanner captures images from the source which are then converted into the digital form that can be stored on the disc.
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. Scanner is an input device which works more like a photocopy machine. They can be used by the computer to create a picture of whatever the camera had been pointed at. For example, below is a basic list of steps of how an output device works. Computer basics for kids eastern local school district. Inputoutput devices are required for users to communicate with the computer.
List of input devices, output devices and both input output. Video input devices are used to entering full motion video recording into a computer. Computer input, processing, output and storage devices. The most fundamental pieces of information are keystrokes on a keyboard and clicks with a mouse. Inputs are the signals or data received by the system and outputs are the signals or data sent from it. An input device is any peripheral used to provide data and control signals to a computer. A number of inputoutput devices are used with many types of microcomputers. Output devices are pieces of computer hardware used to communicate the results of data processing performed by a computer. Computer input and output devices research article from world of invention this encyclopedia article consists of approximately 4 pages of information about computer input and output devices. It is actully the process of transforming input data into output information. Monitor led, lcd, crt etc printers all types lcd projection panels. Input and output devices make up the hardware interface between a computer and a scanner or 6dof controller.
Interaction styles and inputoutput devices article pdf available in behaviour and information technology 122. Input devices accept data and instructions from the user. The objective of output devices is to turn computer information into a human friendlyreadable form. It is used when some information is available on a paper and it is to be transferred to the hard disc of the computer for further manipulation. Without any input devices, a computer would only be a display device and not allow users to interact with it. A visual display unit vdu or monitors are the most popular output devices used for producing softcopy output. Output devices output devices are used to receive information from the computer either in softcopy or hard copy. Computer devices includes, input, output, processing and storage. 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. An electromechanical device that can be used to enter data and instructions into a computer. Digitizer can convert a signal from the television or camera into a series of numbers that could be stored in a computer. Page 1 cover i spy game page 2 instructions i spy game page 34 clue sheet i spy game other activities page 5 unscramble page 6 word search page 7 page 8 cross word puzzle page 9 circle input or outp.
Data that has been processed into a useful form, called information p. There are many examples of output devices, each with their own benefits and drawbacks. The result is then sent to an output device such as a screen. Output devices monitor the device which displays computer output. However, nearly all examples of human computer interaction require both input and output to do anything useful.
These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. A computer program processes and digitises the input information. Monitors are very similar to televisions but usually display information at a much higher resolution. Input is usually given by clicking the mouse or typing on the keyboard. 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 computer sits between the input and output devices. Job interview questions on basic computer technology and internet part2.
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