Object-Oriented Programming with Objective-C Contents Introduction 5 Who Should Read This Document 5 Organization of This Document 6 See Also 6 Why Objective-C? 7 Object-Oriented Programming 8 Data and Operations 8 Interface and Implementation 9 The Object Model 12 The Messaging Metaphor 13 Classes 15 Modularity 16 Reusability 16 Mechanisms of Abstraction 18 Encapsulation 18 Polymorphism 19 Inheritance 20 Class Hierarchies 21 Subclass Definitions 21 Uses of Inheritance
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HISTORY OF THE COMPUTER ARTICLE WRITTEN BY: ADEBOWALE ONIFADE ELECTRICAL ELECTRONIC ENGINEERING DEPARTMENT UNIVERSITY OF IBADAN NIGERIA REGION 8 HISTORY OF THE COMPUTER ABSTRACT This paper takes a keen look at the history of computer technology with a view to encouraging computer or electrical electronic engineering students to embrace and learn the history of their profession and its technologies. Reedy (1984) quoted Aldous Huxley thus: “that men do not learn very much from the
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Bibliography Atelsek‚ Jean (1993) All About Computers: Discover the World of Computers. Ziff- Davis Press Emeryville‚ California. A computer is a machine that can store and process information. Game machines are special computers that work by sending imagines to the screen and responding to the buttons you press. Computers have existed for many years helping people keep track of information and solving problems. The development of the computer started with the need to keep track of
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Linear Programming Application Transportation Problem The Navy has 9‚000 pounds of material in Albany‚ Georgia that it wishes to ship to three installations: San Diego‚ Norfolk‚ and Pensacola. They require 4‚000‚ 2‚500‚ and 2‚500 pounds‚ respectively. Government regulations require equal distribution of shipping among the three carriers. The shipping costs per pound for truck‚ railroad‚ and airplane transit are shown below. Formulate and solve a linear program to determine the shipping
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computing | Hardware | * Hardware before 1960 * Hardware 1960s to present * Hardware in Soviet Bloc countries | Computer science | * Artificial intelligence * Compiler construction * Computer science * Operating systems * Programming languages * Software engineering | Modern concepts | * Graphical user interface * Internet * Personal computers * Laptops * Video games * World Wide Web | Timeline of computing | * 2400 BC–1949 * 1950–1979 * 1980–1989
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Computers are one of the most important inventions ever. If computers had not been invented‚ technology would not be developed to its current state. Since the computers invention‚ society has changed drastically. Computer technology is so helpful‚ that it is even used to create newer‚ better computer equipment. Almost everything today is linked in some way‚ to computers. Before computers were invented‚ very little was known about outer space. With the technology we have now‚ we are learning
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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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Programming Reusability of Code Fundamentals PRG/211 April 13‚ 2013 Introduction Some of the differences between procedural programming modules and objects are subtle but significant. In a procedural program‚ modules interact by reading and writing state that is stored in shared data structures. Yet in an OOP‚ modules in the form of objects interact by sending messages to other objects. The power of OOP comes from the ability to inherit‚ encapsulate‚ and abstract that procedural logic
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provided by the sensor and sending the barcode’s content to the scanner’s output port. Biometrics Biometrics[1] (or biometric authentication)[note 1] refers to the identification of humans by their characteristics or traits. Biometrics is used in computer science as a form of identification and access control.[2] It is also used to identify individuals in groups that are undersurveillance.[citation needed] Biometric identifiers are the distinctive‚ measurable characteristics used to label and describe
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Assignment # 01 History Of Computers Introduction To Computer Submitted by Irrum Fatima 2013-B.env-029 2nd Semester Environmental Sciences Submitted to Madiha Wahid Department of Environmental Sciences FJWU – Rawalpindi Computers Computers are the Electronic Device Have Storing Capabilities Have Processing Capabilities Give outputs against inputs Give instructions to carry out operations and then store in memories Computers made our lives easy and reliable. Now a day‚ computer becomes necessary
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