Input devices There are many input formats which enable us to gather up and collect information‚ and enter data and instructions into the computer. Input devices can be manual or automatic. Manual input devices include: Keyboard - including concept keyboard. This is a flat board that contains a grid of buttons. Each button can be programmed to follow instructions. An overlay sheet is placed on the grid with an explanation for each button. They are used in primary schools with young children
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A THOROUGH OVERVIEW OF INPUT AND OUTPUT DEVICES PRESENTED BY THE MEMBERS OF GROUP B COMPUTER SCIENCE DPT. INTRODUCTION • The I/O devices as parts of the components of an information processing system or a computer system are those devices which enables the computer system to communicate with the outside world. As we all know from the concept of communications in English language that communication is said to have being completed only when the encoder (sender) must have received a feedback from
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INPUT AND OUTPUT DEVICES In computing‚ input/output‚ or I/O‚ refers to the communication between an information processing system (such as a computer)‚ and the outside world possibly a human‚ or another information processing system. Inputs are the signals or data received by the system‚ and outputs are the signals or data sent from it. The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation. I/O devices are used by a person (or other system) to
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Chapter 9 Input/Output Devices Contents: I. Introduction II. Input Devices a. Keyboard‚mouse‚joystick‚scanners‚digital camera‚ bar code reader‚ touch Sreeen‚Speech input device (microphone) III. Output Devices a. Monitor ‚ Speaker‚ Printers ( different types) ----------------------------------------------------------------------------------------I. Introduction The computer will be of no use unless it is able to communicate with the outside world. Input/Output devices are required for users to
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1. Scanning devices Optical Scanners 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. Features of the optical scanner include-its design‚ software compatibility‚ type of feeder‚ speed‚ resolution‚ etc. Some advantages of the optical scanner include : • Easy to use • Continuous‚ detailed‚ and scaled true-colour images for documentation and interpretation
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INPUT DEVICES: 1. Keyboard - The keyboard is a way to input letters or numbers into different applications or programs. A keyboard also has special keys that help operate the computer. 2. Mouse - The mouse is used to open and close files‚ navigate web sites‚ and click on a lot of commands (to tell the computer what to do) when using different applications. 3. Touch Screen - A touch screen is a computer screen or other screen that you can touch with your finger to enter information. Examples
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contexts that are important to the development of the United States. These contexts are political structure‚ social structures and economic structures. Operating System Windows 7 Business Intended for business users who need diverse network connectivity options‚ computer management tools strongly backup and shadow copy capabilities‚ strong security‚ work group tools‚ and ability to run and customize business – level applications. Business Editions can join
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should consider when assessing the suitability of hardware device for connecting to a computer is; Speed‚ Cost‚ Security‚ Capacity‚ Reliability. 2. When installing a new component into a computer system the tasks involved are; Add the component to the computer‚ either connecting in through an existing port or plugging it into an expansion slot in the motherboard. The available ports on most computers include serial‚ parallel and universal serial bus (USB).
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Data Input and Output Essay The methods of input of data may vary consistently. For instance‚ for printed questionnaires‚ the traditional method of input implies the use of computers’ keyboard by means of which the information that is supposed to be printed in a questionnaire is input. The same method may be used for long documents‚ though this may imply the use of different software applications. For instance‚ for printed questionnaires the simplest word processors may be used‚ while long documents
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Accuracy of data input is important. What method of data input would be best for each of the following situations and why: * Printed Questionnaires: * Keyboard and mouse * User can type data using the keyboard and use the mouse to click/select pieces of data * Telephone Survey: * Voice input device * Surveys may be set up to function using voice recognition for users responding
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