Data transmission‚ digital transmission‚ or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires‚ optical fibres‚ wireless communication channels‚ and storage media. The data are represented as an electromagnetic signal‚ such as an electrical voltage‚ radiowave‚ microwave‚ or infrared signal. Data representation can be divided into two categories: Digital
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Databases and Data Communication BIS 320 September 16‚ 2013 Lisa Ricks Databases and Data Communication Databases are great when you want to create a model of data such as numbers for figuring out how much you can spend on a new home when you are in the buying marketing‚ you can use excel to figure out how much you can spend and a monthly payment. You can also use a database to track of shipping components from a trade show that you are in charge of. You can use a database to organize
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13 Prof. 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
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CHAPTER 17 DATA MODELING AND DATABASE DESIGN SUGGESTED ANSWERS TO DISCUSSION QUESTIONS 17.1 Why is it not necessary to model activities such as entering information about customers or suppliers‚ mailing invoices to customers‚ and recording invoices received from suppliers as events in an REA diagram? The REA data model is used to develop databases that can meet both transaction
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introduction to the basic concepts related to the computing field. It also provides you the brief and clean introductory class about various types of the computers. Author: Ali Asghar Manjotho 12/25/2007 A word about the Author and the Book This book is written‚ composed‚ and organized by Mr. Ali Asghar Manjotho — studying at Computer Systems Engineering Department under the kind umbrella of Mehran University of Engineering and Technology Jamshoro bearing the roll number (07CS20). He started
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LECTURE 1 DATA TYPES Our interactions (inputs and outputs) of a program are treated in many languages as a stream of bytes. These bytes represent data that can be interpreted as representing values that we understand. Additionally‚ within a program we process this data that can be interpreted as representing values that we understand. Additionally‚ within a program we process this data in various way such as adding them up or sorting them. This data comes in different forms. Examples include: your
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1. What time period does The American Cyclopaedia use to explain the “Dark Ages”? According to The American Cyclopaedia‚ the “Dark Ages” began in 400 CE and lasted until about 1400 CE. 2. Does “intellectual depression” refer to the people of the “Dark Ages” or historical knowledge of the time? The term “intellectual depression” refers to the historical knowledge of the “Dark Ages”‚ because historians believed that not many innovations came about during this time‚ thus making it an intellectual depression
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Internet bandwidth requirements kept challenging traditional‚ software-based packet processing architectures. The perceived complexity of programming routing functions in silicon‚ led to formation of several startups determined to find new ways to process IP and MPLS packets entirely in hardware and blur boundaries between routing and switching. One of them‚ Juniper Networks‚ shipped their first product in 1999 and by 2000 chipped away about 30% from Cisco SP Market share. Cisco answered the challenge
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other words information that has been collected at first hand is called primary research. It involves measurement of some sort‚ whether by taking readings off instruments‚ sketching‚ counting‚ or conducting interviews. Conducting primary research is a useful skill to acquire as it can greatly supplement our research in secondary sources‚ such as journals‚ magazines‚ or books. We can also use it as the focus of our writing project. In primary data collection‚ we collect the data ourselves by
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Computer Science Quiz Questions With Answers - Multiple Choice 1- IC chips used in computers are usually made of 1. Lead 2. Silicon 3. Chromium 4. Gold Answer: Silicon 2- One kilobyte is equal to 1. 1000 bytes 2. 1024 bytes 3. 100 bytes 4. 1023 bytes Answer: 1024 3- Which of the following is not an example of Operating System? 1. Windows 98 2. BSD Unix 3. Microsoft Office XP 4. Red Hat Linux Answer: Microsoft Office XP 4- Which supercomputer is developed by
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