Cisco CCNA Security Notes (640-553) Contents Contents ....................................................................................................................................................... 1 Introduction .................................................................................................................................................. 3 Cisco Security Management Tools ..............................................................................................
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Personal Computers vs. Mainframes POS355 6/25/2012 Usually the obvious difference of a Pc and mainframes is the size. Mainframes are usually much larger room-sized units but today they can be as small as a desktop PC. A mainframe is a high-level computer used and designed for large corporations or organizations for intensive computational tasks. They are also designed for high speed data processing. Because they contain multiple processors‚ multiple applications can be processed
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HISTORY OF COMPUTER Abacus - The First man-made computing device. - It can perform addition and subtraction - invented in China Pascal’s calculating machine/Pascaline - The first mechanical calculator - Invented by Blaise Pascal - Can perform addition & subtraction Leibnitz calculator - First general-purpose calculating machine - Extended version of Pascal Calculating machine - Can perform multiplication and Division - Invented by Gottfried Leibnitz Automatic
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types of hospital information systems are supported in client-server architectures for networking and processing. Most of work positions for hospital information systems are currently resident types. After beginning the Mobile computing tablet computers and smartphone applications are used. Enterprise hospital information system with Internet architectures havebeen successfully deployed in public healthcare territories and have been widely adopted by further entities. The hospital
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Introduction of Computers What is Computer. Computer is an electronic machine‚ which accepts instructions‚ commands and information‚ based on the information process the given information at Ultra High Speed and produce the result on the screen and printer. Qualities of Computer. Possess the following:- a. Ultra High Speed b. Accuracy c. Huge Capacity for Storage d. Decision Making Ability Main Parts of Computers. Following are the main parts
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UNIT-I INTRODUCTION INTRODUCTION TO COMPUTER The term “Computer” is derived from the Latin word “Computare” which means “to compute” or “to calculate”‚ so it is considered to be calculating device. In fact‚ the main objective of inventing the computer was to create a fast calculating machine. But now-a-days more than 75% of non-mathematical or non-numerical work is carried out by the computers. Today‚ computer technology has spread to every sphere of existence of modern man‚ from railway
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Generations of Computer Computer Age: Past‚ Present‚ and Future The First generation The Second Generation The Third Generation The Fourth Generation The Fifth Generation The Computer Age 1951-1958 The First Generation Vacuum Tube – – Rapid changes Four generations over 50 years Trends across generations – Decrease size – Increase speed Magnetic core memory Storage – – Heat Burnout Machine language Punched cards Tape (1957) Characteristics of 1st Generation Computers Computers
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Anatoly Sachenko Computer Hardware I. LECTURE OVERVIEW Foundation Concepts: Computer Hardware‚ reviews trends and developments in microcomputer‚ midrange‚ and mainframe computer systems; basic computer system concepts; and the major types of technologies used in peripheral devices for computer input‚ output‚ and storage. Computer Systems – Major types of computer systems are summarized in Figure 13.2. A computer is a system of information processing components that perform input‚ processing
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C and Data Structures Lab Manual Lab Manual Computer Engineering and Information Technology III Semester / ‘K’ Scheme Prepared By K.ManiRaj M.Sc.‚M.Phil.‚ & P.Vinitha M.Sc M.Phil Lecturer‚ Department of CE/IT‚ M.S.P.V.L Polytechnic College‚ Pavoorchatram. M.S.P.V.L Polytechnic College‚ Pavoorchatram Page 1 C and Data Structures Lab Manual 1A Celsius to Fahrenheit Conversion and vice versa Aim: To write a ‘C’ program to convert the given temperature in degree centigrade
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With increasing popularity of computer games‚ and multimedia home PC users often need an unexpensive computer system upgrade. By building a custom computer one is able to combine componenets‚ and operating system to provide maximal gaming performance. Computers are often called number manipulators‚ because of their ability to run millions of mathematical operations per second (White 43). Computers use binary system of numbers‚ which allows them to operate system of microscopic switches called transistors
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