Computer systems may be classified into the following groups: 1 - The supercomputers are extremely fast computers that are used in scientific research for their ability to do large amount of calculations and store large amount of data. One use of these computers is weather forecast because of the large amount of calculations involved. 2 - Mainframe computers allows several thousands of users at any time. They are used by government companies‚ airline companies for bookings‚ insurance companies
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The Basic Computer Hardware Central Processing Unit: The central unit is the basic part of the computer and includes all the main computer parts. It is the heart of the computer system. It is responsible for executing‚ or running the software. The software programs are translated into a series of codes made up of 1s to 0s that the CPU can understand. Every code means a certain operation should take place. A CPU has various discrete units to help it in these tasks for example there is an arithmetic
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input devices‚ output devices‚ a system unit‚ and storage devices. An input device is any hardware component that allows you to enter data and instructions into a computer. Five widely used input devices are the keyboard‚ mouse‚ microphone‚ scanner‚ and Web cam. * Keyboard- A keyboard is used mainly for typing text into your computer. * Mouse- A mouse is a small handheld device which you control movement of a small symbol and make selections on the screen. * Microphone- It allows
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laptop computer. Screen size fits in this aspect. Both laptop and desktop computers have a wide variety of screen sizes from large too small. The next aspect in the physical category is the keyboard. With a laptop the keyboard is attached to the computer‚ but with a desktop computer you have a wide variety of keyboards one can choose from. Next‚ is portability of the two types of computers. A desktop computer will need to be connected to a constant power source. While the laptop only requires a power
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the letters‚ and more! Step 1: Create A New Blank Photoshop Document Let’s begin by creating a new blank Photoshop document. Go up to the File menu at the top of the screen and choose New. Or‚ for a faster way to create a new document‚ use the keyboard shortcut Ctrl+N (Win) / Command+N (Mac). Either way brings up Photoshop’s New Document dialog box. Enter in the dimensions you need for your effect. For this tutorial‚ I’m going to enter 3 inches for my Width‚ 3 inches again for my Height‚ and for
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last three hundred years‚ the piano has kept the same look‚ but has developed immensely in tone and power. Before the invention of the piano‚ there were two instruments that had similar keyboard-like features; the Harpsichord and the Clavichord. “Until the mid-eighteenth century‚ the Harpsichord was the keyboard instrument that was indispensable in concert music‚ opera and chamber music” (Abbot‚ Graham). The Harpsichord‚ similar the piano now‚ was an instrument
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The Apple iPhone provides its user with the ultimate mobile device which include high quality features and stunning design concept. The iPhone is a mobile phone‚ a highly useable widescreen iPod with touch screen controls and a Internet communications device‚ all rolled into one portable device making it an outstanding smartphone. The casing is small and lightweight which measures 115mm x 61mm x 11.6mm and weighs 135 grams. The casing comes is a selection of popular colors which include a sleek black
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| 2012 | | Frosty Inc. Yada – Sales Manager | [Memo and Purchase Order] | Attached is the memo for a computer upgrade and it purchase‚ also attached is the purchased order for easy refereance | | FROSTY inc. | Memo To: | Sales Director | From: | Sales Manager | cc: | Purchasing Dirctor | Date: | October 12‚ 2012 | Re: | Computer Systems Upgrade and Purchase | | | After being given a $2500.00 budget‚ I have complete my research and have produced a purchase order which
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BUILDING A HIGH END‚ TOP NOTCH COMPUTER Table of Contents Chapter (Parts you need to build a computer) Case …………………….….…….…………………. Page 3 Power Supply ……………………………………… Page 4 Mother Board ……………………............................. Page 5 SSD (Solid State Hard drive) ……………………… Page 6 CPU …………………………………………………… Page 6 DIMM Chip (Memory) and Hard Drive……………… Page 7 CD‚ DVD and Floppy Drives……………………
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Most people have never heard of it‚ but it’s already on your computer. It allows you to move the mouse by using the number pad on the right side of the keyboard. To access MouseKeys (and other goodies that I’ll get to later)‚ click on the Start menu and select Control Panel. The first icon displayed is Accessibility Options (see second image). Double-click it. Now! Click the Mouse tab at the top of the
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