As we saw in the previous blog about the display output devices and their ports. Computer input and output devices research article from world of invention. When a switch makes contact, its mechanical springiness will cause the contact to bounce, or contact and break, for a. Most of the keyboards have between 80 and 110 keys including 1 typing keys qwerty 2 numeric keypad 3 function keys 4 control keys it has following components. The input devices translate the information into the form understandable by computer. What is the difference between an input and output device. What an input device sends inputs to a computer depends on the device. Devices input and output unit 4 input output devices. Input and output devices of a computer system are the devices that connect you to computer. When hardware is installed inside or outside a computer, the operating system needs a special piece of software called a driver to help it understand how to communicate with that device. 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.
Input to the computer is usually given by clicking the mouse or typing on the keyboard. An input device is any hardware device that sends data to a computer, allowing you to interact with and control it. Text entry on mobile devices mobile text entry is huge sms 2. Input devices input is any data or instructions entered into the memory of a computer. They cannot accept or reproduce information output from the computer. Since the whole device is not moved, a track ball requires less space than a mouse. Input switches most basic binary input devices the switch output is high or low, depending on the switch position. 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. Most modern monitors can display 1024 by 768 pixels, the svga standard. Fax machine know more about all in detail, click here input output devices.
This website and its content is subject to our terms and conditions. Input and output devices concepts input devices allow us to send information to the computer. Input is usually given by clicking the mouse or typing on the keyboard. Interfacing with other devices including input ou tput characteristics. Using a computer may seem an easy task because of the tools that are attacked with the device and helps in managing the system properly. This encyclopedia article consists of approximately 4 pages of information about computer input and output devices. A sheet of paper can be used to both record ideas input and display them output. The handout is about the types of computer input and output devices. Input output device ppt, computer fundamentals, class computer science engineering cse notes edurev is made by best teachers of computer science engineering cse. Input and output devices 77 c 6 discrepancies figure 4. We have also included some important questions that are repeatedly asked in previous exams. These quick games and quizes will help you to remember the content of this input devices section. 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 devices let you to transfer data and user command into the computer system. An input device is used to bring data into the system. Job interview questions on basic computer technology and internet part2. Dec 04, 2010 working of input devices input devices. 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 user sees the result after processing of data by the computer through output devices. Lesson 2 input and output devices concepts input devices allow us to send information to the computer. When i draw using a mouse, the drawing actions are the input. Examples include monitors, projectors, speakers, headphones and printers. Mcq input and output device of computer with answers pdf. Input devices the following diagram illustrates some the various devices that are available for entering and selecting data in a computer. Prior to 1984, when apple released its first macintosh computer, the primary input device for personal computers was a standard keyboard that was based on a. Input devices imaging and video input devices optical scanner an optical scanner is a hardware input device that allows a user to take an image or text and convert it into a digital file, allowing the computer to read or display the scanned object. If the site has helped you, please consider showing your appreciation by donating a little towards the sites running costs thank you. Difference between input devices and output devices. In general, the more pixels often expressed in dots per inch, the sharper the image. Below we discuss the variety of peripheral devices used for computer input and output. When i draw using a mouse, it is an input to the computer.
An input device is any hardware component that allows a user to enter data and instructions into a computer. A color monitor can display from 16 to over 1 million different colors. The inputoutput device occrj45 provides connection of any greengate low voltage occupancy sensor, or other low voltage maintain closure, to the room controller or dlvp power module to define the occupancy state of the space. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Aug 30, 20 types of input devices keyboard mouse scanner 5. Here we are providing sample questions in computer fundamentals. Overview input devices need to specify the objects and actions of interaction. This transformation is performed by input interface. A color monitor can display from 16 to over 1 million. Virtually all external devices have buffers, control signals, status signals, and data bits.
Character reads compare the digitized matrix of an unknown character against a stored set of templates. Input devices are used to enter data from the outside world into primary storage. Input output device ppt, computer fundamentals, class computer science engineering cse notes edurev notes for computer science engineering cse is made by best teachers who have written some of the best books of computer science engineering cse. Output devices allow us to receive information from the computer. This document is highly rated by computer science engineering cse students and has been viewed 4714 times. Input output output devices allow us to receive information from the computer. Inputoutput devices alona sorin seminar in computer science 236801 typewriter 9qwerty, christopher sholes 952% q w e r t y u i o p 32% a s d f g h j k l. Keyboard and mouse accepts input from a user and sends that data input to the computer. Pullup resistors are necessary in each switch to provide a high logic level when the switch is open. See below for customer comments view the errata see below for the reason for this book this book is volume 4 of the series, fysos. A touch screen is a best example of an input and output system.
An output device is any device used to send data from a computer to another device or user. While we now take a computer mouse for granted, fifteen years ago there was still a debate about what would be the ultimate pointing device. However, there are dozens of other devices that can also be used to input data into the computer. These quick games and quizes will help you to remember the content of this.
Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter. The flatpanel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the crt. Research computer input and output devices world of invention. 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. Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other characters. The distinction between output devices and input devices becomes even more blurred in the real world. Types of input devices keyboard slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. List of input devices, output devices and both input. Most computer data output that is meant for humans is in the form of audio or video. The input devices include the mouse, keyboard,microphone e. 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. The simplest touch screen is made up of a grid of sensing lines. Input devices in programmable logic controllers tutorial.
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. The keyboard and mouse are examples of input devices. The following is a list of the most common input devices which are nowadays found in a computer system. Small devices require alternative input methods smaller keyboards, stylus input, finger input, gestures many text entry methods exist. This is a ball which is half inserted and by moving fingers on ball, pointer can be moved. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. 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. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse.
Computer input and output device damascus educational center of scholars. Thus, most output devices used by humans are in these categories. When the computer gives the printout, it is the output. Nov, 2018 as far as other input devices, it depends on what was included with your computer and whats connected to the computer. Dec 29, 2016 an input devices converts the data and instructions into binary form that computer can understand. Input and output devices allow the computer system to interact with the outside world by moving data into and out of the system. Ds3668 quad fault protected peripheral driver national does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and national reserves the right at any time without notice to change said circuitry and specifications. The size of a monitor is measured in inches diagonally across the 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. Peripheral devices are external devices that connect to the computer through ports, such as usb, ethernet, and parallel ports. Dear aspirant, as you know computer is very important section to get a good score for bank exam.
But when it comes to know about them and how they work, such devices are categorized as input and output devices. An input devices converts the data and instructions into binary form that computer can understand. When a switch makes contact, its mechanical springiness. Related devices, such as devices this s upercedes, exactly replaces, or is replaced byblock diagrams of inte rnalsinformation to support programming or configuring the device registers, etc. Io devices are used to interact with the computer system. In this blog we will discuss about the other inputoutput devices which we attach to our systems to expand its. Input and output devices allow the computer system to interact with the outside world by moving data into and out of the computer system. Research computer input and output devices world of. 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. Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are. Input output devices htm 304 stew rutledge jess culpeper travis carlston kevin torio andy diaz input devices an input device is any hardware component that allows you to enter data and instructions onto a computer. The best method of determining all of the input devices your computer has is to go through the list above. Process doesnt need to distinguish between input coming from terminal, the network, a le or another process.
The picture shows a logitech trackball mouse, which is an example of an input device the most commonly used or primary input devices on a computer are the keyboard and mouse. Now a day computer is one of the most important field for every examinations. It will be useful for all sbiibpslic exams and other competitive exams. Input devices the devices which are used to give data and instructions to the computer are called input devices. This site took quite a bit of time and effort to create, and it costs me money to keep it up and running.
Because of the high cost of ocr devices, they are uneconomic unless a substantial number of documents are to be processed each day. An output device is used to send data out of the system. An input device can send data to another device, but it cannot receive data from another device. Dear aspirants, welcome to online computer quiz in. Input and output devices can also be written as io devices. For example, the lm555 datasheet from national semiconductor is on their website at what is the lm555. Ideally have the same interface to all devices device independence. If the site has helped you, please consider showing your appreciation by donating a little towards the sites running costs. Pdf computer input and output devices ingamule siraji. Current uses of flatpanel displays include calculators, video games, monitors, laptop computer, graphics display. The lm555 is a timer chip that uses external resistors and capacitors to generate either a single pulse of a certain duration, or a.
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