These inputoutput devices are also known as peripherals since they enclose the cpu and memory of a computer system. 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. 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. Input is usually given by clicking the mouse or typing on the keyboard. Input devices for playing games include gamepads and joysticks, as shown in figure 2. The above pdf is based on input and output devices and contains the following. C file input and output io university of washington. A number of input output devices are used with many types of microcomputers. Touchscreen touchscreen is a special computer screen that takes the input by sensing the touch of a human finger, gloved hand, stylus, pen or any other pointing device. Input devices let you to transfer data and user command into the computer system. 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. The acrobat user interface refers to this as optimised for fast web viewing. Input devices keyboard one of the primary input devices used with a computer. Word processing databases spreadsheets compilers 4 files and streams 5 using files 1.
Speaker act output device and microphone act as input. List of input devices, output devices and both input output. 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. These devices render input to a bitmap or in the case of pclm multiple bitmaps then wraps the bitmaps up as the content of a pdf file. Most devices are only input devices or output devices, as they can.
Input or output devices that are connected to computer are called peripheral devices. In discussing this communication, it is customary to distinguish between interactive io and io with files. Many of these are less complex versions of io devices that have been available for larger computer systems. It gives a detailed listing of the various types of input devices and the output devise. This transformation is performed by input interface. Scanner a scanner is an input device that scans documents such as photographs and pages of text. An input device is a piece of computer hardware equipment used to provide data. Output device can produce the final product of machine processing into a form usable by humans. 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.
Sound card plays contents of digitized recordings, speakers attached to sound card. 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. Note that this will cause the conversion to pdf to be slightly slower and will usually result in a slightly larger pdf file. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to.
List of input devices, output devices and both input. The cin is a predefined device token associated with the standard input and output devices. Interactive io generally implies communication with human users or physical devices, which work in parallel with the. Input output devices free download as powerpoint presentation. Virtually all external devices have buffers, control signals, status signals, and data bits. If a file with the same name already exists its content is erased and the file is treated as a new empty file. Developers are concerned about the performance features of not only the processor, but also all input, storage, and output devices. When the os starts up it loads the various drivers for all the inputoutput devices that it detects. The user gives instructions to the computer just by touching the screen. Inputoutput io systems transfer information between computer main memory and the outside world. Microphone is an input device to input sound that is then stored in digital form.
The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. The audio output is the ability of the computer to output sound. The designation of a device as either input or output depends on perspective. Apr 05, 2012 hereafter, for saving print outputs as pdf file, in the print dialog select the output device zpdf and click print. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys.
The scanner reads the image and saves it in the computer as a file. 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. Input output devices questions and answers computer. Locations are converted to analog voltage applied to the deflection joke.
Inputs are the signals or data received by the system and outputs are the signals or data sent from it. An output device reverses the process, translating the digitized signals into a. It only processes the information given by the input devices and sends the result to the output devices. Dec 25, 2016 every input and output device has a device driver, this is often built into the os or installed when new devices are attached. For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys.
Analog signals are continuous and can have any number of statesnot just two, as with discrete digital signals. 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. Input and output devices input devices allow us to send information to the computer. Inputoutput devices are required for users to communicate with the computer. 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 output devices presentation image scanner computer. 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. A program outside of rexx calls the io replaceable routine for input of a record. A number of inputoutput devices are used with many types of microcomputers. What is the difference between an input and output device. Input and output devices of a computer system are the devices that connect you to computer. Operating system scheduling, input and output management.
Include display files, printer files, tape files, diskette files, and. Devices for communication between computers, such as modems and network cards, typically perform both input and output operations. The handout is about the types of computer input and output devices. Prototypical system architecture of course, modern systems increasingly use specialized chipsets and. Input and output devices introduction the unit 4 presents the information of input and output devices. Writing operations append data at the end of the file.
Pdf computer input and output devices ingamule siraji. 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. When the computer gives the printout, it is the output. After completing this chapter you should understand. Input and output devices can also be written as io devices. An input device is any peripheral used to provide data and control signals to a computer. A sheet of paper can be used to both record ideas input and display them output. The distinction between output devices and input devices becomes even more blurred in the real world. An input device is a piece of hardware that is used to enter data into a computer. An input devices converts the data and instructions into binary form that computer can understand. When set to true pdfwrite will reorder the output pdf file to conform to the adobe linearised pdf specification. Save print output as pdf file in front end system using pdf.
The input devices include the mouse, keyboard,microphone e. 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. Any device has to be connected to the cpu to receive or send information. Hereafter, for saving print outputs as pdf file, in the print dialog select the output device zpdf and click print. Gamepads allow the player to control movement and views with small sticks moved by the players thumbs. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer. The inputoutput system 2 module 2 21 types of input output devices a micrologix plc uses its input and output interfaces to connect with field input output devices. Scribd is the worlds largest social reading and publishing site. A say instruction is processed in a language processor environment that is not integrated into tsoe see types of environments integrated and not integrated into tsoe. The following is a list of the most common input devices which are nowadays found in a computer system. It forms images from tiny dots, called pixels that are. Cpu controls all the connected input and output devices. For pclm there are some additional rules regarding headers, extra content and the order in which the content is written in the pdf file.
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. Inputoutput devices and interaction department of computer. Headsets headset consists of speakers and microphone. A temperature transducer is an example of an analog input device. Facsimile fax it has scanner to scan the document and also. Input devices only allow for input of data to a computer and output devices only receive the output of data from another device. Every input and output device has a device driver, this is often built into the os or installed when new devices are attached. Inputoutput operations encyclopedia of computer science. When a document is scanned, it is converted into a digital format. It forms images from tiny dots, called pixels that are arranged in a rectangular form.
When i draw using a mouse, it is an input to the computer. An io system is composed of io devices peripherals, io control units, and software to carry out the io transactions through a sequence of io operations. Input devices input is any data or instructions entered into the memory of a computer. Some commonly used inputoutput devices are listed in table below. Input output devices presentation free download as powerpoint presentation. Jan 05, 2017 the devices which are used to give data and instructions to the computer are called input devices. Pdf input output storages devices in computers researchgate. This will invoke the saplpd program and prompt for a file name for saving the file enter the filename with full path and click ok to save the pdf file in the mentioned path. Save print output as pdf file in front end system using. All io devices, however, do not send and receive the same. When the os starts up it loads the various drivers for all the input output devices that it detects. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. Alternatively referred to as an io device, an inputoutput device is any hardware used by a human operator or other systems to communicate with a computer. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system.
Monitor led, lcd, crt etc printers all types lcd projection panels. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. This creates an electronic version of the document that can be viewed. Input devices pointing devices keyboard optical input devices audio input device video inpu device. Many of these are less complex versions of io devices that have been available for. 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. Inputoutput io facilities allow a program to communicate with the outside world.
Ouput if successful, returns a pointer to a file object. Following are few of the important output devices which are used in a computer. As the name suggests, inputoutput devices are capable of sending data to a computer and receiving data from a computer. I would like to take text input from html code and output it into pdf file. Input and output devices are required for users to communicate with the computer. 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 any tool device for entering information into a computer. Input and output devices of computer computer notes. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. Multiple buttons are pressed to achieve specific results within a game, such as jumping or shooting.
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