Bahçeşehir University Department of Computer Engineering CMPE 2204 Introduction to Computer Networks Spring 2013 Chapter 1 Data Communications and Networks Overview and Protocol Layers Dr. Çağrı Güngör 1 Basic Info about the Course • Course Content (tentative): — Computer networks; network architectures; protocol layers; TCP/IP; principles of Internet; wireless networks; introduction to network management‚ etc.. • Course Objectives: — Understand widely known network protocols‚ communication
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Computer Keyboard (1874 – 1982) Although the first Computer Keyboard came out in 1964‚ it was a long evolution process from 1874-1982‚ to form the modern computer keyboard as we know it... One of the most common electronic input devices available nowadays is the “computer keyboard”. The “keyboard” enters instructions and data into the “memory” of the “computer”. “Keyboards” are used to “program”‚ operate and manage files and programs on a computer “interface”. This is accomplished by users
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Operating System: An operating system (OS) is a set of software that manages computer hardware resources and provides common services for computer programs. The operating system is a vital component of the system software in a computer system. Application programs require an operating system to function. Types: 1. Real-time A real-time operating system is a multitasking operating system that aims at executing real-time applications. Real-time operating systems often use specialized scheduling
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TASKBAR In the graphical user interface (GUI) for a computer operating system or application‚ a taskbar is a visual device on the desktop that typically shows the user which applications (tasks) are currently active and running. Combined window management and program launching As noted above‚ the Windows 7 taskbar combines two previously separate bits of functionality: Open window management and program launching/file opening. Prior to Windows 7‚ the taskbar was generally used only to manage open
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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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ordinary student has to do a lot of things: find information about something or somebody; find the word definitions; read different maps; read classics for literature lessons‚ etc. A few years ago people should go to the library and work with encyclopedias‚ dictionaries‚ atlases‚ books. They did a tremendous work Now we can surf the Internet and without leaving our homes we can find information in Wikipedia‚ Google Earth‚ and even read books on-line. From year to year it becomes easier to get
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GENERATION OF COMPUTERS The term generation indicates the type of technology used in the computer construction. As new technology was emerging‚ it was being used in the making of computer. The new technology improved the speed‚ accuracy and storage capacity of the computers. Different technologies have been used for computers in different times. Therefore‚ computers can be divided into five generations depending upon the technologies used. These are: First Generation (1940 - 1956) Second
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APPLICATION OF COMPUTERS TO SOCIETY Computers play a great role in the society. Whether at home‚ in school‚ at the mall or in the office‚ computers significantly help in the accomplishment of various tasks. Be it at work or at play‚ computers have undeniably been utilized to perform general or specific activities that enable life to be more convenient and worry-free. Computers in Business In the field of business‚ computers are very useful. They are used in keeping records of daily sales
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Computer Engineering As we know‚ "Computer engineers are involved in the design and development of operating systems‚ compilers and other software that requires efficient interfacing with the components of the computer" [1]. Computer Engineering is most appropriate for my future plans. It will challenge my skills to learn how to design and develop hardware and software. Even though there are disadvantages pursuing a career in Computer Engineering‚ there are also advantages such as what it
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Few industries have changed so much in such a short time as the computer industry‚ and the pace of change shows no sign of slowing. The computer now has a role in almost every aspect of modern life‚ and it has radically affected the way people work‚ play‚ study and organize their lives. As we enter the 21st century‚ computers are influencing ways of teaching and learning‚ as access to computers in schools is becoming more widespread and varied. Their use enables the learner to develop at his or
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