INPUT/OUTPUT ORGANIZATION • Accessing I/O Devices • I/O interface • Input/output mechanism Memory-mapped I/O y pp / Programmed I/O Interrupts Direct Memory Access • Buses Synchronous Bus Asynchronous Bus I/O in CO and O/S • • • Programmed I/O Interrupts DMA (Direct memory Access) A bus is a shared communication link‚ which uses one ‚ set of wires to connect multiple subsystems. The two major advantages of the bus organization are versatility and low cost. Accessing I/O Devices
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Input Data is factual information and it needs to be accurately captured in order to be processed. There are many methods to input data and each situation warrants a different method. There can be several different ways to input the information and it can be done in an automatic fashion‚ as with a computer‚ or it can be done manually‚ as with a human writing the information down. For instance‚ printed questionnaires would best use a special scanning device called an optical data reader that uses
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Input‚ Process and Output In any business‚ the first thing you have to think about is the input. The input varies depending on what kind of a business you are thinking of. Ill be discussing the inputs‚ Processes and outputs with regards to farming. There are different types of farming such as arable farms‚ which the main way of making profit is by growing crops. Then theres livestock farming where animals are the main source of profit. And lastly mixed farms where animals and crops are both
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Basic Input and Output Methods for VB Introduction So far‚ we have relied on GUI-based Input/Output By using VB controls For Data Input to our programs For Data Output from our programs: = Data Entry TextBox (our basic input tool‚ so far) CheckBox‚ OptionBox‚ etc = Data Displaying Label‚ message box ListBox However‚ we may also use Files for I/O These provide a means for long term storage of results. Using Files for Input / Output
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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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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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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 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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Input Device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or other information appliance. A keyboard is the most common input device. Using a keyboard‚ the user can type the text and execute commands. Keyboard is designed to resemble a regular typewriter with a few additional keys. Data is entered into the computer by simply pressing various keys. The layout of a keyboard comes in various
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provide related services. * A process has a definite starting point-the time‚ place‚ and point of input. * The input is transformed into output via a set of interdependent activities. These activities follow a logical flow; however‚ they may not add equal value to the process. * The process ends with a defined output that is the resulting sum of all the activities performed on the input. Business processes are valuable organizational assets. They enable the creation and delivery of
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