Computer Security Many commercial software packages are designed with computer security features that control who can access the computer. These types of access controls use a process called identification and authentication. Identification verifies that the user is a valid user‚ and authentication verifies that the user is who he or she claims to be. Three common methods of authentication are remembered information‚ possessed objects‚ and biometric devices. With remembered information‚ a
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The Evolution Of The Computer Introduction The evolution of electronic computers over a period of time can be traced effectively dividing this period into various generations. Each generation is characterized by a major technological development that fundamentally changed the way computers operated. These helped to develop smaller‚ cheaper‚ powerful‚ efficient and reliable devices. Today‚ life has become indispensable without a computer. You find computerization in almost every sphere and industry
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Computer Memory MEMORY IS THE INTERNAL STORAGE AREA OF THE COMPUTER. MEMORY IDENTIFIES THE DATA STORAGE.THE PHYSICAL MEMORY USUALLY REFERRED TO US MAIN MEMORY OR RAM. Different types of computer Memory Hard Disk Drive. The hard disk drives are among the most common types of computer memory. They can store the data and information long term as this is where you store your music‚ games‚ documents‚ and the like. Hard drives work much like records. They are spinning platters that have arms with head
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Influence of Computers Most people think that computers are just a modern convenience‚ which is true‚ but when thought about‚ it has influenced almost every part of daily life. Since the inventions of computers‚ they have eased work in almost every section of life including society and in the military. The first computer could be an argument in and of itself. If the definition is a machine for performing calculations‚ then the abacus would be considered the first computer‚ but if the definition
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What are the effects of the over-use of computer on people’s health In modern society ‚ the computer has become an indispensable tool in people’s lives and work ‚ but it also increasingly becoming a ‘double-edged sword’.When it bring people’s live and work quickly while also quietly endanger people’s health. According to the survey‚ those who over-use the computer feel tired eyes accounted for 83%‚low back pain accounted for 63.9%‚ loss of appetite and headaches accounted for 56.1% and 54.4%‚
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Key Points Chapter 1: Key to success – recurring cash flows Chapter 2: Key to success for Entrepreneurs – persistence! Chapter 3: Key to success for BP- it Explains 1) Management‚ 2) Management‚ 3) CF Executive Summary – the most important section Include ROI and NPV (IRR?) Ratio analyses Chapter 4: Key point – must use the same accounting method Key point: Successful entrepreneurs know their cash position at all times. Chapter 5: Liquidity – the most important ratios Key point – Entrepreneurs
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The Computer Applications program is for students who want to use the computer as a tool of productivity. The General Education courses‚ in conjunction with specialized courses‚ provide a broad foundation and sharpen students’ skills in preparation for entry into or advancement in today’s workplace. This curriculum‚ following the database systems track‚ provides training‚ skills‚ and knowledge that prepare students for employment as entry-level database programmers and designers; or provides
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The Simple Computer POST Power on self-test (POST) is a test which the computer completes on start-up which will verify whether the hardware is all working correctly. If the hardware is working correctly the computer will continue to boot if not a beep code is generated. A BIOS may have a different beep code depending on what type of BIOS it is. Steps of POST (Power on self-test) Power on self-test (POST) is a test which the computer completes on start-up which will verify whether the hardware
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TYPES OF COMPUTERS The types of computers range from the Hybrid to the Analog types. The computers you come across in the daily course of your day range from laptops‚ palmtops and towers‚ to desktop computers‚ to name a few. But the very word “computers” reminds one of the desktop computers used in offices or homes. Different categories of computes have been devised in keeping with our varied needs. The Types Of Computers: Analog and Hybrid (classification based on operational principle)
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of components that work together to realize some objectives forms a system. Basically there are three major components in every system‚ namely input‚ processing and output. Input Output Processing Fig. 1.1: Basic System Components 2 :: Computer Applications In a system the different components are connected with each other and they are interdependent. For example‚ human body represents a complete natural system. We are also bound by many national systems such as political system‚ economic
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