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Computer and Technology

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GIS - Geographic Information System

by Syeda Tasneem Rumy | Feb 14, 2010
A GIS is a computer system capable of assembling, storing, manipulating, and displaying geographically referenced information
What is GIS This is probably the most asked question posed to those in the Geographic Information Systems (GIS) field and is probably the hardest to answer in a succinct and clear manner. GIS is a technological field that incorporates geographical features with tabular... »read more
Rating: 0 1 2 3 4 5 | Views: 2208 | Computer and Technology

The Co-founder and CEO of Apple and Pixar

by Tina S | Nov 21, 2009
Steve Jobs
Steve Jobs is the co-founder and CEO of Apple and Pixar. “Innovation distinguishes between a leader and a follower.” -Steve Jobs Steve Jobs regularly makes most rosters of the rich and powerful. It is surprising for a guy who takes home an annual salary of U.S. $1. The reasons... »read more
Rating: 0 1 2 3 4 5 | Views: 1891 | Computer and Technology

Universal Serial Bus

by Tracy Pettigrue | Sep 28, 2009
Universal Serial Bus
Universal Serial Bus (USB) is a serial bus standard to interface devices. A major component in the legacy-free PC, USB was designed to allow peripherals to be connected using a single standardized interface socket, to improve plug-and-play capabilities by allowing devices to be connected and... »read more
Rating: 0 1 2 3 4 5 | Views: 1752 | Computer and Technology

Reflections on Trusting Trust

by Derek Thompson | Sep 30, 2010
To what extent should one trust a statement that a program is free of Trojan horses? Perhaps it is more important to trust the people who wrote the software.
TURING AWARD LECTURE by KEN THOMPSON   INTRODUCTION I thank the ACM for this award. I can't help but feel that I am receiving this honor for timing and serendipity as much as technical merit. UNIX 1 swept into popularity with an industry-wide change from central mainframes to... »read more
Rating: 0 1 2 3 4 5 | Views: 3173 | Computer and Technology

Sessions and cookies - Adding state to a stateless protocol

by Syeda Tasneem Rumy | Dec 9, 2009
Knowing if a user has been there before is often required and therefore something known as cookies and sessions have been implemented in order to cope with that problem.
Introduction HTTP is a stateless protocol. This means that each request is handled independently of all the other requests and it means that a server or a script cannot remember if a user has been there before. However, knowing if a user has been there before is often required and therefore... »read more
Rating: 0 1 2 3 4 5 | Views: 2130 | Computer and Technology

Fun With Linux Commands

by Zico Mathews | Oct 12, 2009
by Jason Chen % cat "food in cans" cat: can't open food in cans % nice man woman No manual entry for woman. % "How would you rate Quayle's incompetence? Unmatched ". % Unmatched ". Unmatched ". % [Where is Jimmy Hoffa? Missing ]. % ^How did... »read more
Rating: 0 1 2 3 4 5 | Views: 2074 | Computer and Technology

How Does Google Voice Work

by Tina S | Jan 15, 2010
You can use google voice with your own google number or non-google number also..
  With Google Voice, you get all your calls through a single number. The idea about Google Voice (formerly GrandCentral, which Google acquired) is this: lots of us have more than one phone, and it would be nice to have a single number to give out that will reach us on any of these phones.... »read more
Rating: 0 1 2 3 4 5 | Views: 1932 | Computer and Technology

Digital Subscriber's Line

by Tracy Pettigrue | Sep 28, 2009
DSL
  DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop, although in recent years, many[attribution needed] have adopted digital subscriber line as a more... »read more
Rating: 0 1 2 3 4 5 | Views: 1879 | Computer and Technology

Excerpt from the article: 'How to be a Programmer' - Part 3

by Penelope Truce | Jun 7, 2011
By Robert L Read
Chapter 3: Intermediate (...continued  from http://www.conveylive.com/a/How_to_be_a_Programmer_2) 3.1 Personal Skills     How to Stay Motivated     How to be Widely Trusted     How to Tradeoff Time vs. Space     How to... »read more
Rating: 0 1 2 3 4 5 | Views: 2928 | Computer and Technology

ATM-Asynchronous Transfer Protocol

by Derek Thompson | Sep 28, 2009
Properties: 1.   It supports cell relay and packet switch network 2.   It is a data link layer protocol 3.   It is a connection oriented technology 4.   It is designed for synchronous optical networking design 5.   It helps to implement low... »read more
Rating: 0 1 2 3 4 5 | Views: 1895 | Computer and Technology

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