Computer Security Student Name University Abstract James works for a bank‚ and he spends most of his attending to bank clients and travelling. He always carries with him a laptop that contains confidential bank information. The Operating System of the laptop was last updated in May 2011. Some of the programs James uses are MS word 2007‚ MS Access and MS Excel. James’ computer is‚ however‚ not well secured. It does not have a firewall or an antivirus. In addition‚ the data in the laptop are
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known and popularly used types of computer software. These software come in the form of tools that assist a programmer in writing computer programs. Computer programs are sets of logical instructions that make a computer system perform certain tasks. The tools that help programmers in instructing a computer system include text editors‚ compilers and interpreters. Compilers translate source code written in a programming language into the language which a computer understands (mostly the binary form)
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PART 1 : WORK PATTERNS Lesson 1: Computers on the Job: How Workers use computers The companies that use large computer system today are mostly the same companies that used them 30 to 40 years ago: corporations that have the big budget. These organizations – typically banks; insurance firms and aerospace companies – were the pioneers. The computers used were potent by then-current standards‚ even though today’s personal computers would provide a competitive edge. This turned out to be
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ASSEMBLY Definition of Terms Program - a set of instructions that tells the computer to perform a particular task. Programming – refers to the process of designing and creating computer programs. Programming Language - a software tool that facilitates the translation of human instructions to a form that computers can understand. Programmer - a person who can design‚ create‚ and maintain computer programs. Algorithm - a step by step solution of a problem. Levels of Programming
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A computer is one of the most brilliant inventions of mankind. Thanks to computer technology‚ we were able to achieve storage and processing of huge amounts of data; we could rest our brains by employing computer memory capacities for storage of information. Owing to computers‚ we have been able speed up daily work‚ carry out critical transactions and achieve accuracy and precision at work. Computers of the earlier times were of the size of a large room and were required to consume huge amounts of
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size[edit] Microcomputers (personal computers)[edit] Microcomputers are the most common type of computers used by people today‚ whether in a workplace‚ at school or on the desk at home. The term “microcomputer” was introduced with the advent of single chip microprocessors. The term "microcomputer" itself is now practically an anachronism. These computers include: * Desktop computers – A case and a display‚ put under and on a desk. * In-car computers (“carputers”) – Built into a car‚ for
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of the military and industry in the development of electronics‚ computers‚ and information theory. After the 1940s‚ the military remained the major source of research and development funding for the expansion of automation to replace manpower with machine power. Since the 1950s‚ four generations of computers have evolved. Each generation reflected a change to hardware of decreased size but increased capabilities to control computer operations. The first generation used vacuum tubes‚ the second used
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UNIT - I BASIC STRUCTURE OF COMPUTERS FUNCTIONAL UNITS A computer consists of five functionally independent main parts. They are‚ ➢ Input ➢ Memory ➢ Arithmetic and logic ➢ Output ➢ Control unit Basic functional units of a computer [pic] The operation of a computer can be summarized as follows The computer accepts programs and the data through an input and stores them in the memory.The stored data
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COMPUTER CONCEPTS A computer is a machine that processes data and performs tasks according to a set of instructions. To do anything‚ computer must be give specific directions to follow. They get these directions from software. Software‚ such as that used for word processing‚ is a set of step-by-step instruction for the computer‚ written by computer programmers in a programming language like BASIC‚ Pascal‚ or C. Computers also get instructions from you‚ the user. When you use the mouse (more
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CHAPTER ONE COMPUTER SYSTEM FUNDAMENTALS 1.1 Computer System as a Universal Tool A computer system is an electronic device that accepts inputs; transform the input through some processes to obtain output or information that can aid effective decision making. Information originated from raw data which by its own simple definition is any raw fact or figure that can be subjected to a form of manipulation before it can be trusted for decision making. Data can originate from various sources depending
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