Function of digital computer A typical digital computer system has four basic functional elements: (1) input-output equipment. (2) main memory. (3) control unit. (4) arithmetic-logic unit. Any of a number of devices is used to enter data and program instructions into a computer and to gain access to the results of the processing operation. Common input devices include keyboards and optical scanners; output devices include printers and cathode-ray tube and liquid-crystal display monitors
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Before computers there were not telephone answering machines‚ handheld calculators‚ fax machines‚ personal computers. People did what they had to do without these things. People wrote letter by hand or with a typewriter‚ they also kept track of data and numbers in ledgers. They were not texting each other‚ there was either in person or over the phone. . Computers are integral to our daily lives and there are millions used daily. Computers are used at home‚ work‚ and school. They are also embedded
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It can refer to all computer instructions in general or to any specific set of computer instructions. It is inclusive of both machine instructions and source code (more human-understandable instructions that must be rendered into machine code by compilers or interpreters before being executed). On most computer platforms‚ software can be grouped into a few broad categories: software is the basic software needed for a computer to operate. software refers to one or more computer programs and data
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Negetive Aspects of computer Children are exposed to computers at an early age and some even children know more than their parents about computers. However‚ regular computer use can have some negative effects on children‚ especially those that frequently use computers for extended periods of time. Some children who frequently use the computer may be at risk for developing vision problems. According to the American Optometric Association‚ children can be even more susceptible than adult
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This act of making such prediction is therefore‚ called forecasting. Forecasts are never finished‚ they are needed continuously and as the time passes‚ their accuracy and their impact on actual performance are meas So it looks like that forecast in itself‚ is not too complicated‚ it becomes complicated once the word ?good? is attached to it. Thus‚ the forecast has to be well thought and planned so it can be called good or adequate forecasting. In order to prepare a forecast‚ one should first identify
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Computers have become such indispensable devices in the modern era that we cannot imagine life without computers. However‚ there have been different ideas on the benefits of computers. In my opinion‚ computers do more good than harm because they can make life easier and also can help our work become more systematically and productively. Firstly‚ computers give many advantages as they can make life easier. As a student‚ many works must be done by using computer such as assignment and presentation
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Appropriate Forecasting Model Forecasting is done by monitoring changes that occur over time and projecting into the future. Forecasting is commonly used in both the for-profit and not-for-profit sectors of the economy. There are two common approaches to forecasting: qualitative and quantitative. Qualitative forecasting methods are especially important when historical data are unavailable. Qualitative forecasting methods are considered to be highly subjective and judgmental. Quantitative forecasting methods
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General Computer Questions [pic] General Computer Question 1: What is a computer? Answer: A common‚ somewhat simplified‚ definition is that the computer is an electronic device that can be used to process information. Today‚ computers are not only used for calculations‚ but also for creating and manipulating text and pictures. They are used to design bridges and spacecraft‚ to record a company’s sales and to keep track of customers‚ to create a school newspaper‚ or to estimate the cost
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Today computers have been important factor to society because of the way they are used towards education‚ government‚ internet‚ and etc. Most of the people want to buy a computer to be able to us internet. With internet you could chat with people all over the world‚ research information‚ buy and order supplies‚ food‚ computers‚ movies‚ clothing‚ and etc‚ so having internet in computers is very helpful for many. Computers have been tremendously beneficial to the educational system since the style
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Hard Rock Forecasting Forecasting is fundamental to all organization. In the service sector‚ such as restaurants and hotels‚ forecasting is used for their long term‚ intermediate term and short term operation. In the video‚ Hard Rock Café uses forecasting to help them better operate their business. Hard Rock uses forecasting in all their café‚ hotels‚ and night clubs. They use it to forecast the capacity needed for growth per store for long term‚ and determine quantities of items for the intermediate
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