The definition of input devices is hardware that provides data to the computer. The unit 4 presents the information of input and output devices. Network interfaces can be addin expansion cards, pcmcia cards, or builtin interfaces. Overview input devices need to specify the objects and actions of interaction.
The following is a list of the most common input devices which are nowadays found in a computer system. Input and output devices input devices allow us to send information to the computer. Difference between input devices and output devices. An input device is any hardware component that allows a user to enter data and instructions into a computer.
An input device is a piece of hardware that is used to enter data into a computer. Network card enables systems to connect to the network. Using a computer may seem an easy task because of the. Digitizer is an input device which converts analog information into digital form. Inputoutput devices and interaction techniques 2004. This encyclopedia article consists of approximately 4 pages of information about computer input and output devices. Input devices input is any data or instructions entered into the memory of a computer. The user sees the result after processing of data by the computer through output devices. Digitizer can convert a signal from the television or camera into a series of numbers that could be stored in a computer.
Isdn terminal adapter connects devices to isdn lines. 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. Some commonly used input output devices are listed in table below. Networking devices michigan technological university. A sheet of paper can be used to both record ideas input and display them output.
The input device that rolls on a desktop and controls the position of the cursor on then on the screen is called a. Microphone is an input device to input sound that is then stored in digital form. Clay reacts to the sculptors fingers yet also provides feedback through the curvature and texture of its surface. 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. Draw the diagram of an inkjet printer process and explain it. Input and output devices of computer computer notes. List of input devices, output devices and both input. A hammer presses the wheel against a ribbon, which in turn makes an. To enter information and issue commands, you use input devices. Comprised of seven chapters, this volume starts with an overview of the popular examples of input devices that are used in computer graphics systems, including typewriter keyboard, the mouse and voice input, data input panels, digitzers, and touch input panels. An output device is used to send data out of the system. Input devices other than the keyboard are sometimes called alternate input devices. When i draw using a mouse, it is an input to the computer. 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.
An input device helps you to communicate with the computer. Input devices let you to transfer data and user command into the computer system. 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. The distinction between output devices and input devices becomes even more blurred in the real world. When the participant reaches this point in the handout, explain that a. The devices covered can be used as an introduction to discussions on buffering and interrupts to explain how operating systems syllabus topic 3. Explain how a pda user can benefit from having an external keyboard. Input device defined an input device for a computer allows you to enter information. Input devices are the way were able to get data into a computer. Advantages disadvantagesthey allow us to enter in correct the qwerty and dvorakdata, checking the monitor as we keyboards ease depends on thego along user.
Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys. You can hang them on walls or wear them on your wrists. All aspects of humancomputer interaction, from the highlevel concerns of organizational context and system requirements to the conceptual, semantic, syntactic, and lexical levels of. A good input device should provide timely, accurate and useful data to the main memory of the computer for processing followings are the most useful input devices. The input devices translate the information into the form. Input devices there are many input formats which enable us to gather up and collect information, and enter data and instructions into the computer.
Many of these are less complex versions of io devices that have been available for larger computer systems. The stick is connected to the base, so the stick can move freely up to the 180 degree that is used to move an object on the screen by moving it. Input and output devices are required for users to communicate with the computer. Here i am going to share you about list of basic input devices, output devices. It could be used either as a task sheet with the mini websiste above or with the mindmaps below.
Mice, trackballs, and light pensare all alternate input devices. Each button can be programmed to follow instructions. The most fundamental pieces of information are keystrokes on a keyboard and clicks with a mouse. Input devices keyboard one of the primary input devices used with a computer. Input and output devices make up the hardware interface between a computer or scanner. A number of input output devices are used with many types of microcomputers. Output device can produce the final product of machine processing into a form usable by humans. Users employ a variety of input devices to interact with the computer, but most user. Input devices the devices which are used to give data and instructions to the computer are called input devices.
Joysticks are often used to control video games, and usually have one or more pushbuttons whose state can also be read by the computer. Learn about computer input on our computer input devices channel. Input and output devices of a computer system are the devices that connect you to computer. Input and output devices introduction the unit 4 presents the information of input and output devices. 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. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter ii.
This is a flat board that contains a grid of buttons. The keyboard is the most common and widely used input device. 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. Computer input and output devices research article from world of invention. The devices which are used to input the data and the programs in the computer are known as input devices. 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. Peripheral devices are external devices that connect to the computer through ports, such as usb, ethernet, and parallel ports. Buy computer components that are responsive, fast and ergonomic. But arm your computer with the appropriate input devices, and you will immediately see the difference in the quality and efficiency of your work. Job interview questions on basic computer technology and internet part2. This worksheet was designed by brian thomas from bewdley high school. Isdn is a digital wan technology often used in place of slower modem links.
Explain why some interfaces cause problems to users. A number of inputoutput devices are used with many types of microcomputers. Cambridge igcse in ict unit 2 input and output devices. Input devices bring information into the computer and output device send information to out side. There are several methods to input data and generically, they are keyboards, mice, audio and video. The flatpanel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the crt. Input is usually given by clicking the mouse or typing on the keyboard. Input and output devices can also be written as io devices. Input device characteristics contribute to performance. Also froehlich, two new input devices for 3 d environments introduced hochstrate, skuk and huckauf 2006 and these tested in an user study n 16, einfaktorielles within subjects design. Input and output devices bangladesh open university. Devices showing up in 2010 connectors differ, but provide backward compatibility with older usb standards usb 2. 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. In this lecture we will discuss the various input and output devices that are used in 3d.
Input and output devices allow the computer system to interact with the outside world by moving data into and out of the computer system. When the computer gives the printout, it is the output. Research computer input and output devices world of. They can be used by the computer to create a picture of whatever the camera had been pointed at. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. 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. There are many different kinds of input devices like input devices are also used to control computers in different ways. Current uses of flatpanel displays include calculators, video games, monitors, laptop computer, graphics display. 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 keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. This is a combined assignment for both input devices and output devices modules, the input is the rotary switch and the output devices are the stepper or servo motors as well as the two leds.
The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. 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. Use of computer input devices by older adults adolescent. List the categories of input devices and give one example of each. Examples of devices are computer gaming mouse, wireless mouse, keyboard and computer keyboard stand, joystick, gamepad, and more. Any data or instruction entered into the computer is known as input.
Dear aspirant, as you know computer is very important section to get a good score for bank exam. Input devices are used to enter data from the outside world into primary storage. Input devices are necessary to convert our information or data into a form which can be understood by the computer. Data can be entered quickly it isnt as quick as using a micr or omr. Input devices accept data and instructions from the user. 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. For this week we are expected to experiment with input devices, to read some data from some sensor or some other. Here you will find powerpoints, worksheets, activities, internet research questions related to the cambridge recommended text book cambridge igcse in ict by paul clowrey and colin stobart, with questions and other supporting materials to help you teach the unit. For example, a keyboard is an input device, whereas a display monitor is an output device. Jacob department of electrical engineering and computer science tufts university medford, mass.
Review study of computer input devices and older users request. Io devices are used to interact with the computer system. This book then proceeds with a discussion of the general requirements for input devices. A morphological analysis of the design space of input devices. Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other characters.
Generally input devices are manual or direct data entry devices. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Devices input and output unit 4 input output devices. 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. Computer input devices explains the workings of different types of mice and keyboards. The limitation of the foley wallace ghan scheme is that the categories, while reasonable, are somewhat ad hoc, and there is no attempt at defining a notion of completeness for the design space.
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