The keyboard is the most common and widely used input device. Pdf ec8353 electron devices and circuits edc books. Now a day computer is one of the most important field for every examinations. Input devices input devices are those devices from which we can input data and instructions into the computers. Many of these are less complex versions of io devices that have been available for larger computer systems. An input device is any tool device for entering information into a computer. Input and output the computer mouse and the keyboard are both hardware devices that allow you to communicate with the computer. Input data may not be accurate ifresults of a surveyresearch. So dear reader i have provided top expected gk questions from input and output device of computer. Manual input input deviceskeyboards and mice very slow input rates 10 characters of 8 bits per sec.
Input and output devices input devices allow us to send information to the computer. There are a number of tasks for you to carry out, be sure to read the information fully whilst completing the tasks. Worksheet 2 input devices make sure that you are familiar with all of the information detailed in this booklet. While this is a good start, much of the rest of this book is to build on. The devices which are used to input the data and the programs in the computer are known as input devices. 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. Io devices are used to interact with the computer system.
Getting the right input devices for your computer system can make a world of difference in your computers performance and can improve the quality of your time spent at the screen. Introduction to programmable logic controllers plcs. Some common computer input devices reading activity english4it. Any data or instruction entered into the computer is known as input. Pdf input output storages devices in computers researchgate. Complete o level computer science 2210 guide, latest past papers yearly and topical, all latest computer science o level notes compiled from all web at one place for you. An input device is any hardware component that allows a user to enter data and instructions into a computer.
Input module forms the interface by which input field devices are connected to the controller. The distinction between output devices and input devices becomes even. Output device can produce the final product of machine processing into a form usable by humans. Most common and very popular input device is keyboard. Cooper 1983 for good overview, including chapters by. Here you will find a variety of resources specifically written for various examination boards. Mcq input and output device of computer with answers pdf.
We can begin to get some perspective on the range of input devices available by examining some. Computer input devices following are some of the important input devices which are. An input device is a piece of hardware that is used to enter data into a computer. What is the difference between an input and output device. Some devices are connected to the system via a general io bus, which in many modern systems would be pci or one of its many derivatives. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys. Input devices let you to transfer data and user command into the computer system. The notes are very comprehensive, clearly divided into sections, well illustrated, and easily understandable for students. Input and output devices school of information technology. Welcome to the ultimate online resource portal for economics, business studies, accounting and ict revision.
Parts of a computer class iii, iv and v thinking of various. The final chapter deals with voice input systems, which is a technique that has not fully achieved its. Nov, 2018 however, some devices can accept input and display output, and they are referred to as io devices input output devices. Finally, even lower down are one or more of what we call a peripheral bus, such as scsi, sata, or usb. Input and output devices introduction the unit 4 presents the information of input and output devices. When i draw using a mouse, it is an input to the computer. A hammer presses the wheel against a ribbon, which in turn makes an ink stain in the shape of the character on the paper. Input is usually given by clicking the mouse or typing on the keyboard. Current uses of flatpanel displays include calculators, video games, monitors, laptop computer, graphics display. You can hang them on walls or wear them on your wrists. 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. Input and output devices of a computer system are the devices that connect you to computer.
Igcse ict has notes on many topics including input and output devices that are useful for a range of ict and computing courses. 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. Cambridge igcse in ict unit 2 input and output devices. The chapter has given an introduction to the inputoutput devices. An input device helps you to communicate with the computer. To enter information and issue commands, you use input devices. Foundations and extensions, prentice hall, inc 1985 very good in its coverage and examples. The terms field and real worldare used to distinguish actual external devices that exist and must be physically wired into the system. A number of inputoutput devices are used with many types of microcomputers. Input and output devices bangladesh open university. Sep 30, 2019 computer graphics pdf computer graphics book pdf notes starts with the topics covering introduction of computer graphics. Input and output devices can also be written as io devices.
Nov 27, 2018 input output device based mcq mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Some of the input devices used in a computer are keyboard, mouse scanner, joystick, touch screen, touchpad, track ball, bar code reader, light pen, optical code reader ocr, micr, omr, microphone, digital camera, webcam, card readers, digitizing tablets, etc. Sep 07, 2017 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. Input output devices are required for users to communicate with the computer. Input devices as well as output devices are a neccessity in order to. Input devices keyboard one of the primary input devices used with a computer. Following are few of the important input devices which are used in computer systems. Computer science paper 1 notes o level computer science.
For example, a keyboard is commonly used to transfer data or information from human readable form to machine readable form. Joysticks are often used to control video games, and usually have one or more pushbuttons whose state can also be read by the computer. Microphone is an input device to input sound that is then stored in digital form. The flatpanel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the crt. Discrete input modules ac inputsac inputs l1 line l2 io module load term. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. Chapter 3 input output devices april 27, 2019 chapter 1 introduction. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. In summary, input devices are how you interact with a computer.
Complete o level computer science 2210 guide, latest past papers yearly and topical, all latest computer science o level. Beginning with an introductory chapter, the book leads the reader into an understanding of the inputoutput approachnot only as formal theory but also as a research strategy and powerful tool for dealing with a complex modern economy. Bar coded data is generally used in labelling goods, numbering the books, etc. An input device is any peripheral used to provide data and control signals to a computer. Oct 02, 2012 omr devices are used to read questionnaires, multiple choice examination papers and many other types of forms where responses are registered in the form of lines or shaded areas. Download link is provided and students can download the anna university ec8353 electron devices and circuits edc syllabus question bank lecture notes part a 2 marks with answers part b marks and part c 15 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study materials. Use the theory notes on the site to help you complete this booklet. Strip black 120 vac white 120 vac com some modules need this connection for balancing ac inputs power flows into the input module when the field device is on hence the input module is char acterized as a sinking module there is a least one common per module. Keyboard is the most common and very popular input device which helps to input. Student notes page 1 of 7 k aquilina input devices input is any data or instructions entered into the memory of a computer. New input devices and media can help redress this imbalance by obtaining data from the user.
Other chapters consider the various panel input devices that are popular means of allowing the user to interface with the computer graphics system. Devices input and output unit 4 input output devices. A variety of input devices are used with the computer depending on the type and purpose of input information. Computer science lesson plan on input devices for classgrade 6 free download pdf. 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. The following is a list of the most common input devices which are nowadays found in a computer system. Output devices allow us to receive information from the computer. This book then proceeds with a discussion of the general requirements for input devices. 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. For example, as you can see in the top half of the image, a keyboard sends electrical signals, which are received by the computer as input. This is a good starting point for a lot of topics not just for the igcse course. When the computer gives the printout, it is the output.
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