Storage Functions of secondary storage Secondary storage also called auxiliary storage or backing storage is used to store data and instructions when they are not being processed. Secondary storage is much cheaper than primary storage and is also used to back up for later use. Storage media Storage media are the physical hardware on which a computer keeps data‚ instructions and information. E.g. a CD‚ a DVD‚ a floppy disk‚ hard disk. Storage device Storage devices record and retrieve
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The purpose of this paper is to answer questions about various data input and output methods‚ various storage types and devices‚ and the speed of a computer. Each of the four questions is divided into a corresponding section below. In the input device section‚ this paper focuses primarily on user input‚ rather than the input devices used to extract information entered by a user. In all of the presented cases‚ electronic scanning methods are the best method‚ and the method routinely used‚ to extract
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INPUT DEVICES 1. Where does the name QWERTY keyboard come from ? The name QWERTY comes from the first six letters on the top row of the alphabet keys. 2. Why do think the QWERTY keyboard is the most popular method of data entry? The QWERTY keyboard is the most popular method of entering data because an easy way of usage and when you get used to it you start typing faster 3. Who might make use of a concept keyboard? A concept keyboard might be used by a fast food restaurant
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Central Processing Units Once data have been captured‚ they usually must be processed to be valuable to decision makers and these processing tasks are performed by the central processing unit (CPU) of a computer system. A central processing unit (CPU)‚ also referred to as a central processor unit‚ is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical‚ logical‚ and input/output operations of the system. In the computer industry
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Theory Notes Task: Output Devices Make sure that you are familiar with all of the information detailed in this booklet. There are a number of tasks for you to carry out‚ be sure to read the information fully whilst completing the tasks. You could be asked about any of this in the test! Use the theory notes in from the teach-ict.com site to help you complete this booklet. TASK 1: OUTPUT DEVICES Output devices let you see data that has been processed or is stored on the hard disk
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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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Input‚ Intake‚ and Output in One-Way Drawing Task By Yan Lin It is agreed that input plays a critical role in language acquisition thus researchers have done many studies on input. Without input the learner has nothing. But the question is what kind‚ form and amount of input is most useful for the language learners. Krashen (1980) has argued that the input given to the learners has to be comprehensible for acquisition to happen. He defined it as input which is slightly
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Input Devices QWERTY Keyboard The keyboard is the most common type of input device. In other countries‚ the keyboard layout is different due to their different language and characters. There are some variations of keyboards to the normal keyboard. Some are wireless which means that no wire is required to connect it to the PC; and some have ergonomic design‚ which have a special design in order to reduce muscular stress on the user. Mouse The mouse is a pointing device which is used to move
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making non-text selections such as menu choices on the till of a fast food outlet. The keyboard is also waterproof which can be useful where there is dirt or the risk of splashes. 5. Explain why a mouse often called a pointing device A mouse is often called a pointing device because it enables you to control what happens on the screen by moving the mouse on your desk and pointing‚ clicking and selecting items on the screen. 6. Describe the difference between a mouse and a tracker ball? The difference
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Other than the monitor‚ we also have the printer which is also an output device. A printer generally translates information that has been processed by the system unit and presents the information on paper. As students‚ we really benefit from such device for in times of projects‚ reports‚ and assignments we greatly rely on such output which we refer to as hard copy. There are five features of a printer ---- its resolution‚ color‚ speed‚ memory and duplex printing. Resolution is the measure of the
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