LECTURE 2 COMPUTERS ARE EVERYWHERE 1 – THIS LECTURE LOOKS AT A FEW SPECIFIC AREAS of SOCIETY AND WHERE COMPUTERS ARE USED » TRANSPORT » MEDICAL WORLD » AGRICULTURE » AIRLINE TRAVEL COMPUTERS ARE EVERYWHERE 2 Computers are everywhere. Our lives are directly affected when they do not operate. Computers have infiltrated our lives so we do not know how to function without them. INFORMATION AGE 3 We live in what we call the INFORMATION AGE – Evolving more
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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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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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Internet is one of the most important and beneficial invention of man. Because of this‚ people worldwide find means to have an easy and fast communication‚ research for the study purposes become convenient and serve as a good source of income. Those benefits from the internet are very productive to man. They put up different computer rental shops‚ as well as posh internet café‚ that increase the competition in their own field. And one of their main concerns is to improve their system to have
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Computer Technology Being a kid sitting around with your friends‚ there was always that one person this said‚ do you think this will ever happened? When I grow up all I will have to do will say door open to get in my house‚ everything else will be done for me. now‚ much to my surprise this day has now arrived. The arrival and utilization of computers in today’s world is absolutely unbelievable. Things can be done with computers that could have never been done in the past. we have security
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Computers in Education The typical school has 1 computer per 20 students‚ a ratio that computer educators feel is still not high enough to affect classroom learning as much as books and classroom conversation. Some critics see computer education as merely the latest in a series of unsuccessful attempts to revolutionise education through the use of audio- and visually-oriented non print media. For example‚ motion pictures‚ broadcast television‚ filmstrips‚ audio recorders‚ and videotapes were all
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PRELIM COMPUTER What is a Computer? A computer is an electronic machine that can be programmed to accept data (input)‚ process it into useful information (output)‚ and store it in a storage device for future use Characteristics of a Computer •It’s a machine. •It is electronic. •It is automatic. •It can manipulate data. •It has memory •It has logical function Capabilities of a Computer • Speed • Accuracy • Repetitiveness • Storage • Programmable Limitations of a Computer • Cannot operate without
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differently and act differently—for better and for worse. In the 1990’s the personal computer became more popular‚ changing American politics and culture forever and sending us into new eras of technology. This is why I believe the computer revolution made the most profound impact on American culture and politics. In the 1990’s‚ computers began a revolution in the workforce. Businesses relied on the computers for things like word processing‚ accounting and record keeping. They changed the way
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to Computers and C++ Programming 1 What is Computer? Computer Organization Computer Languages C++ Your First Program in C++ Variables and Operators Computer Programming (HKU SPACE HDIT 10/11) 2 Computer Programming (HKU SPACE HDIT 10/11) 3 Computer ◦ Device capable of performing two major functions 1. 2. Computations Making logical decisions Computer programs Hardware ◦ Sets of instructions used by computers to process
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Computer forensics‚ also called digital forensics‚ network forensics‚ or cyberforensics‚ is a rapidly growing field that involves gathering and analyzing evidence from computers and networks. Because computers and the internet are the fastest growing technology used for criminal activity‚ the need for computer forensics specialists will increase in years to come. A computer forensics specialist examines computer media‚ programs‚ data‚ and log files on computers‚ servers‚ and networks. Many areas
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