Used Computers Desktops Laptops What To Look For

Linux ... It is a leading operating system on servers and other big iron systems such as mainframe computers and supercomputers: more than 90% of today's top 500 supercomputers run some variant of Linux, including the 10 fastest...

Information Technology ... Technological capacity and growth Hilbert and Lopez identify the exponential pace of technological change (a kind of Moore's law): machines’ application-specific capacity to compute information per capita has roughly doubled every 14 months between 1986-2007; the per capita capacity of the world’s general-purpose computers has doubled every 18 months during the same two decades; the global telecommunication capacity per capita doubled every 34 months; the world’s storage capacity per capita required roughly 40 months to double (every 3 years); and per capita broadcast information has doubled roughly every 12.3 years...

Natural Language Processing ... Whether NLP is distinct from, or identical to, the field of computational linguistics is a matter of perspective. The Association for Computational Linguistics defines the latter as focusing on the theoretical aspects of NLP...

Artificial Intelligence ... The field was founded on the claim that a central property of humans, intelligence—the sapience of Homo sapiens—can be so precisely described that it can be simulated by a machine. This raises philosophical issues about the nature of the mind and the ethics of creating artificial beings, issues which have been addressed by myth, fiction and philosophy since antiquity...

Mobile Phone ... In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming and photography. Mobile phones that offer these and more general computing capabilities are referred to as smartphones...

Linux Adoption ... Several national governments have passed policies moving governmental computers to Linux from proprietary systems in the last few years... History Gartner claimed that Linux-powered personal computers accounted for 4% of unit sales in 2008... Lenovo announced it would ship select models with SUSE Linux Enterprise Desktop pre-installed HP announced that it would begin shipping computers preinstalled with Red Hat Enterprise Linux in Australia ASUS launched the Linux-based ASUS Eee PC 2008 Dell announced it would begin shipping Ubuntu-based computers to Canada and Latin America Dell began shipping systems with Ubuntu pre-installed in China Acer launched the Linux-based Acer Aspire One In June 2008 the Electronics Corporation of Tamil Nadu (ELCOT), a bulk computer buyer for students in the Indian state of Tamil Nadu, decided to switch entirely to supplying Linux after Microsoft attempted to use its monopoly position to sell the organization Windows bundled with Micr...

Graphics ... Graphics can be functional or artistic. The latter can be a recorded version, such as a photograph, or an interpretation by a scientist to highlight essential features, or an artist, in which case the distinction with imaginary graphics may become blurred...

History Of Technology ... Technological artifacts are products of an economy, a force for economic growth, and a large part of everyday life. Technological innovations affect, and are affected by, a society's cultural traditions...

Engineering ... The American Engineers' Council for Professional Development (ECPD, the predecessor of ABET) has defined "engineering" as: The creative application of scientific principles to design or develop structures, machines, apparatus, or manufacturing processes, or works utilizing them singly or in combination; or to construct or operate the same with full cognizance of their design; or to forecast their behavior under specific operating conditions; all as respects an intended function, economics of operation and safety to life and property.. ...

Database ... The term database is correctly applied to the data and their supporting data structures, and not to the database management system (DBMS). The database data collection with DBMS is called a database system...

Molecular Nanotechnology ... A roadmap for the development of MNT is an objective of a broadly based technology project led by Battelle (the manager of several U. S. National Laboratories) and the Foresight Institute...

Search Engine Technology ... Some search engines go through the indexing process every few weeks and refresh the complete index used for web search requests while others keep updating small fragments of the index continuously. Before web pages can be indexed, an algorithm decides which node (a server in a distributed service) will index any given page and makes the information available as metadata for other components in the search engine...

Mobile Device ... Early pocket sized ones were joined in the late 2000s by larger but otherwise similar tablet computers... Types Mobile devices have been designed for many applications and include: Mobile computers Mobile collaboration Mobile internet device Mobile Web Smartphone, Tablet computer Personal digital assistant/enterprise digital assistant Calculator Handheld game console Portable media player Digital still camera (DSC) Digital video camera (DVC or digital camcorder) Mobile phone Smartphone, Feature phone Pager Personal navigation device (PND) Tablet computer Uses Handheld devices have become ruggedized for use in mobile field management...

IBM ... The company was founded in 1911 as the Computing Tabulating Recording Corporation through a merger of three companies: the Tabulating Machine Company, the International Time Recording Company, and the Computing Scale Corporation. CTR adopted the name International Business Machines in 1924, using a name previously designated to CTR's subsidiary in Canada and later South America...

Cryptanalysis ... Even though the goal has been the same, the methods and techniques of cryptanalysis have changed drastically through the history of cryptography, adapting to increasing cryptographic complexity, ranging from the pen-and-paper methods of the past, through machines like Bombes and Colossus computers at Bletchley Park in World War II, to the computer-based schemes of the present...

Google ... Google was first incorporated as a privately held company on September 4, 1998, and its initial public offering followed on August 19, 2004. At that time Larry Page, Sergey Brin, and Eric Schmidt agreed to work together at Google for 20 years, until the year 2024...