Student notes page 1 of 7 k aquilina input devices input is any data or instructions entered into the memory of a computer. An input device is any peripheral used to provide data and control signals to a computer. Inputoutput interface provides a method for transferring information between internal storage such as memory and cpu registers and external io devices. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. List several types of printers and explain their functions. A variety of output devices are used with computer. Nov 22, 2016 input devices pointing devices keyboard optical input devices audio input device video inpu device 7. This transformation is performed by input interface. The speed of printers can be measured in characters per second cps or pages per minute ppm, the higher the values are, the faster the printer can produce output. Input output interface computer science engineering cse. The handout is about the types of computer input and output devices.
Some commonly used inputoutput devices are listed in table below. Input and output devices can also be written as io devices. It forms images from tiny dots, called pixels that are arranged in a rectangular form. Monitors and printers are two of the most commonly. A computer is an electronic device that works under instructions given by the user to accept, process and output information as required.
Five widely used input devices are the keyboard, mouse, microphone,scanner,and web cam. The device used to accept the data and instructions from the user is called input device. Pengantar teknologi informasi input and output computer devices reference. The chapter has given an introduction to the inputoutput devices. As you know computer is very important section to get a good score for bank exam. This is a ball which is half inserted and by moving fingers on ball, pointer can be moved. Scanner is an input device used for direct data entry from the source document into the computer system. Input and output devices are required to communicate with the computer. An input device is any tool device for entering information into a computer. Input devices are part of the four main hardware components of a computer system. Identify suitable uses of the input devices stating the advantages and disadvantages of each. Input and output devices the functioning of a computer system is based on the combined usage of both.
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. The keyboard is a basic input device that is used to enter data into a computer or any. Many of these are less complex versions of io devices that have been available for. The image below shows where input dev ices fit into a computer system. Io devices are used to interact with the computer system. Keyboard is used in the input phase of a computerbased information system.
Crt monitor, tftlcd monitor, ipslcd monitor, led monitor, touch screen as an output device, multimedia projector, laser printer, inkjet printer, dot matrix printer, wide format printer, 3d. On the other hand, the input output table provides an important database to the construction of input output models which may be used, for example, to evaluate the economic impact caused by exogenous changes in final demand miller, 1998. 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. Inputoutput devices mercy wairimu gachoka devotional meditation proverbs. Identify suitable uses of the output devices stating the advantages and disadvantages of each. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer.
It check omr answer sheet and reproduce result in excel, pdf forma. Any device has to be connected to the cpu to receive or send. With each device, we will discuss the advantages, disadvantages, and its effects on interface design. Play the magician hat game and identify the input and output in it. A number of input output devices are used with many types of microcomputers. The devices are usually used for display, projection, or for physical reproduction. Its main disadvantage is the time spent interrogating all the devices. They are required to enter data and instructions in a computer so that the computer can. A computer has two types of devices which help the user to enter data into the computer and allows the computer to display result of the processed data as required by the user. Note that it is difficult to move the mouse cursor to a. The input device converts the data into the computers own internal code. Write a detailed note on inputoutput devices of computer.
Given below is the list of the most common input devices along with brief information about each of them. Notes of caie cambridge advanced cambridge international as and a level subjects computer science 9608 topical notes paper 1 as computer science chapter 3 hardware 1 input,output, and storage devices. Comp 110 introduction to computer science lecture 3. Peripherals connected to a computer need special communication links for interfacing them with the central processing unit. Inputoutput devices constitute a major part of a computer system. Pdf interaction styles and inputoutput devices researchgate. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse.
Monitors crt, tft, projectors, printers laser, ink. Pdf this report, such as command history redo, undo, extended to. The original applications of the input output model were made at a nationwide level. However, some devices can accept input and display output, and that they are mentioned as io devices inputoutput devices. Crt monitor, tftlcd monitor, ipslcd monitor, led monitor, touch screen as an output device, multimedia projector, laser printer, inkjet printer, dot matrix printer, wide format printer, 3d printer, speakers, motors, buzzers, heaters, lightslamps. 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. External devices external device categories human readable. An input device is any hardware component that allows a user to enter data and instructions into a computer. Now a day computer is one of the most important field for every examinations. Chapter 2input output memory device mdrpuc, hassan 2 p a g e mouse.
The distinction between output devices and input devices becomes even. An input device is used to feed data into a computer. Dec 29, 2016 input device is a device through which data and instruction are entered into computer system. It convert these instruction and data into binary code that is recognised by the computer.
Storage devices are the computer components designed to keep or store data. Pdf computer input and output devices ingamule siraji. Printers are one of the most used peripherals on computers and are commonly used to print text, images, and photos. Inputoutput organisation computer architecture tutorial. Mcq input and output device of computer with answers pdf. 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. Input devices data glovepolhemus a modern attempt to provide the user with more degrees of freedom common in virtual reality applications polyhemus can provide six degrees of freedom rotation and translation head mounted display although primary a display device, it can also track position and orientation like polhemus space ball six degrees of freedom sphere. Without io devices, a user cannot communicate with the computer. Dear aspirant, as you know computer is very important section to get a good score for bank exam. Output devices printer printer is an external hardware device responsible for taking computer data and generating a hard copy of that data. Since the whole device is not moved, a track ball requires less space than a mouse.
Output devices of computer notes pdf download technical cube. A computer has several input device namely, keyboard, mouse, trackball, joystick, scanner, light pen, bar code reader, ocr, omr, micr etc. Input and output devices introduction the unit 4 presents the information of input and output devices. The use of these devices depends on the type and purpose of output. The most popular inputoutput device is the visual display unit vdu. What is the difference between computer input and output devices.
Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other characters. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. 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. Most microprocessor does not support floatingpoint operations. The data in machinereadable form is read by an input unit, transformed to appropriate internal code and stored in. It gives a detailed listing of the various types of input devices and the output devise. Some commonly used input output devices are listed in table below. Micro processor to address a memory location of an input output devices. A simple device comprising keys and each key denotes either an alphabet, number or number commands which can be given to a computer for various actions to be performed. A device requesting an interrupt may identify itself. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to move the mouse cursor in a computer program or operating system.
Many of these are less complex versions of io devices that have been available for larger computer systems. Jun 28, 2011 an output device can be used to display or print the intermediate or final results performed by computer. Note that we can still have the shared data problem but not in t. Monitors, printer, plotters, visual display unit vdu, liquid crystal display lcd, etc. It forms images from tiny dots, called pixels that are. For example, you can type in data by using a keyboard, or you can input data in picture form by using a scanner. An input devices converts the data and instructions into binary form that computer can understand. Keyboard is the most common and very popular input device which helps to input data to.
Mouse is an input device that controls the movement of the cursor on the display screen. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter ii. Machinereadable form the form in which data is readable to the input unit of the computer is called as machinereadable form. Following are few of the important output devices which are used in a computer. The development of voice inputoutput devices for the user interface has been limited in the past, but it is now growing rapidly. Inputoutput devices are used different data format and word length. Input output device ppt, computer fundamentals, class computer science engineering cse notes edurev is made by best teachers of computer science engineering cse. The iostat probe is used to monitor the load on server inputoutput io devices by observing the time for which the devices are active compared to the average transfer rate of the device. Mouse stands for mechanically operated user serial engine. A track ball comes in various shapes like a ball, a button and a square. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. The input devices include the mouse, keyboard,microphone e. The simplest way to identify the interrupting device is to have the interruptservice routine poll all the io devices connected to the bus the polling scheme is easy to implement. When voice input is perfected, it will be the easiest method of providing a user interface for data entry and conversational computing, since speech is the easiest most natural means of human communication.
An input device is any hardware component that allows you to enter data and instructions into a computer. This data can be the information needed to make the computer function, such as the operating system or basic inputoutput system bios, or data created by the user, such as images, documents, text files and so on. Input and output devices people computer science virginia tech. An input device is a piece of computer hardware equipment used to provide data and control signals to an information. Input devices data glovepolhemus a modern attempt to provide the user with more degrees of freedom common in virtual reality applications polyhemus can provide six degrees of freedom rotation and translation head mounted display although primary a display device, it can also track position and orientation like polhemus space ball. Notes for 3rd class computers science input and output devices. The concepts are also very clearly understood by seeing at the figures in the chapter. The communication link resolves the following differences between the computer and peripheral devices. Input devices input, output and other devices siyavula. Identify your body parts that can be compared to computer parts. A framework for research in inputoutput devices and interaction styles. Input devices let you to transfer data and user command into the computer system.
Identify the hardware devices typically used for audio output. A printer is an output device that produces a printout or hard copy of the output from a computer. Free notes for 3rd class computers science input and output devices. Monitor is an output device which is used for producing softcopy output. The data bus is bidirectional because the same bus is used for transfer of data between micro processor and memory or input output devices in both the direction. Computer questions bank 2020 pdf downloadread more articles. An input device is used to bring data into the system. Computer input and output devices notes in hindi in hindi. The input devices translate the information into the form understandable by computer.
An input devices converts the data and instructions into binary form that. 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. Virtually all external devices have buffers, control signals, status signals, and data bits. Three dimensional displays note that this refers to a threedimensional. Input and output devices of computer computer notes. This document is highly rated by computer science engineering cse students and has been viewed 4781 times. So dear reader i have provided top expected gk questions from input and output device of computer. These devices output is usually not visible directly but the output can be viewed with the help of computer where one can update, modify data etc. Notes for 3rd class computers science input and output devices input and output devices. Output devices computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. The following is a list of the most common input devices which are nowadays found in a computer system.
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