The image below shows where input dev ices fit into a computer system. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. Main drawback of this device is slow speed it is because speed of work is dependent on the typing speed. The importance of ergonomic input devices in the workplace. The devices which are used to input the data and the programs in the computer are known as input devices. You can hang them on walls or wear them on your wrists. Of course, with a direct input device, such as a touch screen, the.
Input devices the devices which are used to give data and instructions to the computer are called input devices. Heres a look at output devices such as monitors, speakers, printers and ebooks. Using these tools, we have built a taxonomy of input devices that goes beyond earlier taxonomies of buxton. An input device helps you to communicate with the computer. An input device is any tool device for entering information into a computer. When you work with the computer you feed your data and instructions through some devices to the computer. Devices input and output unit 4 input output devices. The work of a computer can be characterized by an inputprocessoutput model in which a program receives input from an input device, performs some processing on the input, and produces output to an output device. A subset of these peripheral devices are those which allow the system to acquire data and to distribute data, both from external sources. Overview input devices need to specify the objects and actions of interaction. 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. Output devices impact printer daisywheel similar to a ballhead typewriter, this type of printer has a plastic or metal wheel on which the shape of each character stands out in relief. What are different types of input devices with examples. Input devices are used to enter data from the outside world into primary storage.
An input device is any hardware component that allows you to enter data and instructions into a computer. Microphone is an input device to input sound that is then stored in digital form. Following are some of the important input devices which are used in a computer keyboard. We are seeing more and more variety of specialised input and output devices that can connect with other devices to help the user perform a particular task. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. The distinction between output devices and input devices becomes even more blurred in the real world. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. New input devices and media can help redress this imbalance by obtaining data from the user conveniently. It is also an input device that is used by bank account holders. It reads all information when someone swaps atm or visa card on it. Input and output devices of a computer system are the devices that connect you to computer. This worksheet provides students with a set of questions about input devices. Ergonomic changes increased productivity 25 percent.
Output devices nonimpact printer multifunction printer tonerbased an mfp is an office machine which incorporates the functionality of multiple devices in one. As we saw in the previous blog about the display output devices and their ports. This paper discusses a means to systematize these devices through morphological. Jacob department of electrical engineering and computer science tufts university medford, mass. Input and output devices can also be written as io devices. When the computer gives the printout, it is the output. Clay reacts to the sculptors fingers yet also provides feedback. Now a day computer is one of the most important field for every examinations. An output device is any piece of computer hardware equipment which converts information into. Digitizer can convert a signal from the television or camera into a series of numbers that could be stored in a computer. The importance of ergonomic input devices in the workplace page 3 charleston forge, a metal furniture manufacturing company, established an ergonomics program that cut lost workdays from workrelated msds from 176 in 1991 to 0 in 1997.
Since a sequence of operations can be readily changed. Any data or instruction entered into the computer is known as input. Inputoutput devices are required for users to communicate with the 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. To survey the principal types of interaction devices in use today and. Discuss how different input devices affect interface design in this lecture we will discuss the various input and output devices that are used in 3d user interfaces and virtual environment applications. A computer is a general purpose device which can be programmed to carry out a finite set of arithmetic or logical operations.
Keyboard mouse scanner microphone digital camera and web camera keyboard the keyboard is the most common. They need to use the website to help them find the right answers. Users employ a variety of input devices to interact with the computer, but most user. Mcq input and output device of computer with answers pdf. However, there are dozens of other devices that can also be used. The following is a list of the most common input devices which are nowadays found in a computer system. Input is usually given by clicking the mouse or typing on the keyboard.
A hammer presses the wheel against a ribbon, which in turn makes an ink stain in the shape of the character on the paper. The future of input devices department of computer science. These devices convert data and instructions into the form. A computer is only useful when it is able to communicate with the external environment.
A morphological analysis of the design space of input devices. The input devices translate the information into the form. Output device can produce the final product of machine processing into a form usable by humans. 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. Input and output devices make up the hardware interface between a computer or scanner. Process doesnt need to distinguish between input coming from terminal, the network, a le or another process. Some people consider a sound card to be more of an output device. This property can be used, for example, in libraries which attempt to mimic native scrolling by consuming lowlevel input events. Input device is a hardware part of the computer that is used to enter data and instructions into computer memory. Buy computer components that are responsive, fast and ergonomic. 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. All aspects of humancomputer interaction, from the highlevel concerns of organizational context and system requirements to the conceptual, semantic, syntactic, and lexical levels of.
In computing, an input device is a piece of computer hardware equipment used to provide data. Robertson xerox palo alto research center the market now contains a bewildering variety of input devices for communication from humans to computers. In this blog we will discuss about the other inputoutput devices which we attach to. Computer cannot understand our language because it understands only machine language and it can be possible using some devices called input devices. Dear aspirant, as you know computer is very important section to get a good score for bank exam. A flatbed scanner works like a copy machine except that it creates a file of the document rather than a paper copy. All computers have a hard drive, as they could not function without it. Sure there are lots of devices thats main purpose might be input or output, but nowadays, you could easily find a device from a similar group keyboard, mouse, printer that could actually do both in and output. An input device is any peripheral used to provide data and control signals to a computer. Input devices are part of the four main hardware components of a computer system.
Examples of devices are computer gaming mouse, wireless mouse, keyboard and computer keyboard stand, joystick, gamepad, and more. The flatpanel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the crt. An input device is any hardware component that allows a user to enter data and instructions into a computer. Isdn terminal adapter connects devices to isdn lines. Input devices are used to enter data and instructions into computer memory from external world. Today, most computers have a cdrw or dvdrw drive, network card, and a sound card or onboard sound on the motherboard, which are all inputoutput devices. Choose from 500 different sets of 4 input devices flashcards on quizlet. Dom input events are an abstraction above lowlevel input events, loosely tied to physical device input e. Network interfaces can be addin expansion cards, pcmcia cards, or builtin interfaces. Usage of atm card is increasing rapidly day by day in all over the world.
Current uses of flatpanel displays include calculators, video games, monitors, laptop computer, graphics display. Keyboard, mouse, track ball, track pad, joy stick, touch screen, light pen, scanner, digital. Posts about type of output devices written by scholar. Digitizer is an input device which converts analog information into digital form. They can be used by the computer to create a picture of whatever the camera had been pointed at.
Learn 4 input devices with free interactive flashcards. The definition of input devices is hardware that provides data to the computer. Joysticks are often used to control video games, and usually have one or more pushbuttons whose state can also be read by the computer. This device allows data to be entered directly into the computers. There are many different kinds of input devices like input devices are also used to control computers in different ways. This property is typically true for directmanipulation pointing devices those where the physical metaphor is one of the user directly manipulating an object on the screen, such as touch screens and some onscreen stylus devices common on phones. All aspects of humancomputer interaction, from the highlevel concerns of organizational. Io devices are used to interact with the computer system. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. Input devices let you to transfer data and user command into the computer system. A scanner is a lightsensing input device that converts printed text and graphics into a digital form that can be further processed by the computer. Input devices input devices any peripheral piece of computer hardware equipment used to provide data and control signals to a computer. Inputoutput devices peripheral devices are all those devices which are attached externally to the fundamental components of a computer system the cpu and main storage.
A typical mfp may act as a combination of some or all of the following devices. Networking devices michigan technological university. Input and output devices input devices allow us to send information to the computer. Keyboard is a input device used for entering data into computer by pressing one key at one time. Input devices keyboard it is used to input data to the computer. Input devices types of keyboard laptop keyboard the laptop computer keyboard is a small version of the typical qwerty keyboard. Keyboard,mouse,joystick,scanners,digital camera, bar code reader, touch sreeen,speech input device microphone. Input devices input is any data or instructions entered into the memory of a computer. Peripheral devices are external devices that connect to the computer through ports, such as usb, ethernet, and parallel ports.
There are several methods to input data and generically. Ideally have the same interface to all devices device independence. Network card enables systems to connect to the network. 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. The electrical contacts and circuits just below the keys translate the information directly into binary. Without any input devices, a computer would only be a. 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. Inputoutput devices and interaction techniques 2004. An input device is any hardware device that sends data to a computer, allowing you to interact with and control it.
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. Isdn is a digital wan technology often used in place of slower modem links. When we work with a computer, we enter data and give instructions to the computer by using these devices. This worksheet was designed by brian thomas from bewdley high school. To enter information and issue commands, you use input devices. A typical laptop has the same keyboard type as a normal keyboard, except for the fact that most laptop keyboards condense the symbols into fewer buttons to accommodate less space.
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