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. An output device is used to display the data or information that we receive from the computer. Input is usually given by clicking the mouse or typing on the keyboard. The output device provides the output of data or information. Singlebus structure the bus enables all the devices connected to it to exchange information typically, the bus consists of three sets of lines used to carry address, data, and control signals each io device is assigned a unique set of addresses processor memory io device 1 io device n bus. In this page you will find, the information about the computer systems units. The material processed by a computer, however, must still be entered. Output deviceoutput devices return processed data that is information, back to the user.
A color monitor can display from 16 to over 1 million different colors. Input and output devices bangladesh open university. An input device is a piece of computer hardware equipment used to provide. This encyclopedia article consists of approximately 4 pages of information about computer input and output devices.
Right, the commands you type are the input and what you see on the monitor is the output. There are two kinds of viewing screen used for monitors. Input output devices are required for users to communicate with the computer. Weve picked out your system unit and input devices. Following are few of the important output devices which are used in a computer.
Computer is fed with a lot of data to be processed and organised. They are divided into two categories 1 manual input devices devices that. An output device is an electromechanical device which accepts data from a computer and translates them into a human acceptable form. Devices input and output unit 4 input output devices. The data that has been processed into a useful form is called output. Output devices output devices can adopt different shapes and styles, which are used to give the output of the processing of data. Cpu controls all the connected input and output devices. It is an electronic device that processes the input according to.
Virtually all external devices have buffers, control signals, status signals, and data bits. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. Dear aspirants, welcome to online computer quiz in. Pos scanner are hardware devices capable of reading a barcode and printing out the details of the product andor logging that product into a database so a company can easily keep track of its inventory. Input output devices an input output io device is a device that can be used both for input and for output.
Monitor and the printer are the commonly used output devices. The most common of all input devices is the keyboard. Even though having a 2d monitor and add in a 3d stereoscopic, mblok is a bluetooth. Research computer input and output devices world of invention. Jan 05, 2017 the devices which are used to display the results or information are called output devices. So the keyboard is an input device and the monitor is the output device. Digitizer digitizer is an input device which converts analog information into digital form. Information that comes from an external source and is. When computers were introduced into wide usage after world war ii, they revolutionized the way modern societies function. However, nearly all examples of humancomputer interaction require both input and output to do anything. Output devices task sheet reinforcement games and practice questions.
Try these tasks and activities to enhance your output devices knowledge. Input output devices, technologies and techniques evaluation. Output devices are those devices which display the required result in simple words to the users. An input device is any hardware component that allows a user to enter data and instructions into a computer. In general, the more pixels often expressed in dots per inch, the sharper the image. Fahad khan an input device is a piece of hardware that is used to enter data into a computer. Research computer input and output devices world of. The use of these devices depends on the type and purpose of output. For example, the speakers of a multimedia computer system are directly connected to a device controller called an audio card such as a soundblaster, which in turn is connected to the rest. Inputoutput devices and interaction department of computer. Those devices just display the results in hard copy or soft copy. Output generated by output device classified into two types.
Keyboard keyboard is the most common input device used for entering text data directly into a computer. Student notes page 1 of 7 k aquilina input devices input is any data or instructions entered into the memory of a computer. Videos input and output devices oculus rift virtual beating reality headset mblok laser bluetooth keyboard types of output devices the oculus rift creates a 3d environment when playing games. For example, just as your brain thinks and allows you to do different activities, cpu is the brain on computer and connects the input and output devices. Assignment of input and output devices linkedin slideshare.
Complete the worksheets after reading the powerpoint above. Sometimes, this consists of a separate input and output device in the same box, for example a keyboard with a build in lcd display. This is the most common output device connected with the computer to display the processed information. Komponen hardware central processing unit cpu a hardware component that performs computing functions utilizing the alu, control unit, and registers. Monitor monitor is perhaps the most important output device because people interact. The sharpness of the image depends upon the number of pixels. When we paint using the computer, the painting can be seen on the monitor.
Output is a processed data that is otherwise called information. They are directly connected to an electronic module inside the systems unit called a device controller. Notes on input devices introduction to basic computer. Mcqs on input and output devices gk objective question answer exam question answer for the competitive exam of govt jobs. The following is a list of the most common input devices which are nowadays found in a computer system. The input devices translate the information into the form understandable by computer. We need to head to the computer store one more time. You can view the output on the monitor or you can print it on a paper using a printer. A computer has two types of devices which help the user to enter data into the. When i draw using a mouse, it is an input to the computer. An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer. Our televisions used to be oneway output devices, but now they provide both output and input through the use of apps that are running on these smart tvs. Here we are providing sample questions in computer fundamentals.
Most modern monitors can display 1024 by 768 pixels, the svga standard. The size of a monitor is measured in inches diagonally across the screen. The devices which are used to input the data and the programs in the computer are known as input devices. So dear reader i have provided top expected gk questions from input and output device of the computer. Inputoutput devices an inputoutput io device is a device that can be used both for input and for output. Input and output devices io devices are hardware elements. It forms images from tiny dots, called pixels that are arranged in a rectangular form. Output devices notes on data entry for nios online course. They are required to enter data and instructions in a computer so that the computer can. 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. Pdf computer input and output devices ingamule siraji. So the paint actions that we do using the mouse are input. Output devices are those peripheral devices that allow a user to retrieve information from a computer. Hps inputoutput devices have a oneyear limited warranty.
For example, the speakers of a multimedia computer system are directly connected to a device controller called an audio card such as a soundblaster, which in turn is connected to the. An output device can be used to display or print the intermediate or final results performed by computer. Computer input and output devices research article from world of invention. Dear aspirant, as you know computer is very important section to get a good score for bank exam. These quick games and quizes will help you to remember the content of the output devices section.
Device that transmits and receives documents over telephone lines p. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. Analog signals are continuous and can have any number of statesnot just two, as with discrete digital signals. 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. 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. Identify your body parts that can be compared to computer parts. Know the main characteristics, purposes and suitability of the devices and understand their principles of operation.
Since the whole device is not moved, a track ball requires less space than a mouse. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. A track ball comes in various shapes like a ball, a button and a square. Examples of output devices are printer,monitor, speakers. Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other characters.
Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter. An output device reverses the process, translating the digitized signals into a. Input devices o level computer science 2210 prepared by. Input devices keyboard one of the primary input devices used with a computer. Input and output devices school of information technology. Below are some of the previous important questions asked in the public examinations. Technical support is available seven days a week, 24 hours a day, as well as in online support forums. It will be useful for all sbiibpslic exams and other competitive exams. Nov, 2018 an output device can receive data from another device and generate output with that data, but it cannot send data to another device. Device that takes image from a computer screen and projects it onto a larger screen p. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse. Monitors, commonly called as visual display unit vdu, are the main output device of a computer. A number of inputoutput devices are used with many types of microcomputers. The purpose of the output devices is to translate data and information from electrical impulses to a humanreadable format.
Pointing devices absolute relative graphic tablet, touchscreen, optical pen mouse, joystick, trackball direct indirect control to display ratio touchscreen, optical pen graphic tablet, mouse, joystick, trackball si3 master isi. Output is the result we get through output devices. Pos scanner are hardware devices capable of reading a barcode and printing out the details of the product and or logging that product into a database so a company can easily keep track of its inventory. Now a day computer is one of the most important fields for every examination. Aug 27, 2018 as you know computer is very important section to get a good score for bank exam. A digital projector is a device which connects to a computer and used to. Play the magician hat game and identify the input and output in it. Inputoutput devices constitute a major part of a computer system. Computer input and output devices questions computer knowledge. Mcq input and output device of computer with answers pdf. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys.
Primarily, they have allowed for the more efficient processing and storing of vast amounts of information. The devices which are used to display the results or information are called output devices. This is a ball which is half inserted and by moving fingers on ball, pointer can be moved. The distinction between output devices and input devices becomes even more. Quickspecs inputoutput devices notebooks overview da 11862worldwide quickspecs version 20 6. Input and output devices introduction the unit 4 presents the information of input and output devices. Without io devices, a user cannot communicate with the computer. A variety of output devices are used with computer.
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. It will explain to you the components and the function of each components. Computer input and output devices questions computer. Fax machine know more about all in detail, click here input output devices. Input output devices are usually called io devices. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys.
The devices covered can be used as an introduction to discussions on buffering and interrupts to explain how operating systems syllabus topic 3. It forms images from tiny dots, called pixels that are. Digitizer can convert a signal from the television or camera into a series of numbers that could be stored in a. An output devices is a piece of hardware that is used to display objects or output data which has been processed or has been stored in the computer. It only takes the information given by the input devices and sends the result to the output devices. Any device has to be connected to the cpu in orderto receive or send information. A temperature transducer is an example of an analog input device.
Monitor receives data from a computer output and displays that information as text and images for users to view. What is the difference between an input and output device. They are required to enter data and instructions in a computer so that the computer can process that data and provide the result to the user. We have also included some important questions that are repeatedly asked in previous exams. And of course, the display itself is the output device.
Output devices or output units do not compute or process anything. Now weve really got to figure out whats important for your output. 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. We would get information into the television with our remote control, maybe an external keyboard, or even with voice communication. Latest input and output devices by sarbani bag on prezi. Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are. 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. They are divided into two categories 1 manual input devices devices that need human involvement to input data. Peripheral device, also known as peripheral, computer peripheral, input output device, or input output 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. Jinfu li, ee, ncu 3 content coverage main memory system inputoutput system arithmetic. The manual method of computing was slow and prone to errors. Many of these are less complex versions of io devices that have been available for larger computer systems.
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