Ralston, Hemmendinger & Reilly (2025), p

Information technology (IT) is a set of associated fields that encompass computer systems, software, programs languages, information and details processing, and storage. [1] IT forms part of details and communications innovation (ICT). [2] An infotech system (IT system) is typically an information system, an interactions system, or, more specifically speaking, a computer system – consisting of all hardware, software application, and peripheral devices – operated by a limited group of IT users, and an IT project usually refers to the commissioning and implementation of an IT system. [3] IT systems play an essential role in facilitating effective information management, enhancing communication networks, and supporting organizational procedures across different industries. Successful IT tasks require meticulous preparation and ongoing upkeep to make sure ideal performance and alignment with organizational objectives. [4]

Although human beings have actually been saving, recovering, controling, analysing and interacting info because the earliest writing systems were developed, [5] the term information innovation in its modern sense first appeared in a 1958 article published in the Harvard Business Review; authors Harold J. Leavitt and Thomas L. Whisler commented that “the brand-new technology does not yet have a single recognized name. We will call it info innovation (IT).” [6] Their meaning includes three classifications: techniques for processing, the application of statistical and mathematical approaches to decision-making, and the simulation of higher-order believing through computer system programs. [6]

The term is commonly utilized as a synonym for computer systems and computer networks, but it likewise encompasses other information distribution innovations such as tv and telephones. Several services or products within an economy are associated with information innovation, consisting of computer system hardware, software, electronic devices, semiconductors, web, telecom devices, and e-commerce. [7] [a]

Based on the storage and processing technologies utilized, it is possible to differentiate 4 unique phases of IT development: pre-mechanical (3000 BC – 1450 AD), mechanical (1450 – 1840), electromechanical (1840 – 1940), and electronic (1940 to present). [5]

Information technology is a branch of computer technology, defined as the research study of procedures, structures, and the processing of different kinds of information. As this field continues to evolve globally, its priority and value have actually grown, resulting in the introduction of computer system science-related courses in K-12 education.

Ideas of computer system science were first discussed before the 1950s under the Massachusetts Institute of Technology (MIT) and Harvard University, where they had actually gone over and began considering computer system circuits and mathematical computations. As time went on, the field of infotech and computer science ended up being more complex and had the ability to manage the processing of more information. Scholarly posts began to be released from various organizations. [9]

During the early computing, Alan Turing, J. Presper Eckert, and John Mauchly were considered a few of the major leaders of computer technology in the mid-1900s. Providing such credit for their advancements, most of their efforts were concentrated on designing the very first digital computer. Together with that, subjects such as synthetic intelligence started to be raised as Turing was beginning to question such innovation of the time duration. [10]

Devices have been utilized to assist calculation for thousands of years, most likely at first in the kind of a tally stick. [11] The Antikythera mechanism, dating from about the start of the very first century BC, is normally considered the earliest known mechanical analog computer, and the earliest recognized tailored system. [12] Comparable geared devices did not emerge in Europe until the 16th century, and it was not till 1645 that the first mechanical calculator efficient in carrying out the four basic arithmetical operations was established. [13]

Electronic computer systems, utilizing either passes on or valves, started to appear in the early 1940s. The electromechanical Zuse Z3, completed in 1941, was the world’s first programmable computer, and by modern-day requirements among the first machines that could be considered a total computing device. During the Second World War, Colossus established the first electronic digital computer to decrypt German messages. Although it was programmable, it was not general-purpose, being created to carry out only a single task. It likewise did not have the ability to save its program in memory; programming was brought out using plugs and changes to alter the internal wiring. [14] The first recognizably modern-day electronic digital stored-program computer system was the Manchester Baby, which ran its very first program on 21 June 1948. [15]

The advancement of transistors in the late 1940s at Bell Laboratories enabled a brand-new generation of computers to be designed with greatly decreased power consumption. The very first commercially offered stored-program computer, the Ferranti Mark I, included 4050 valves and had a power consumption of 25 kilowatts. By contrast, the first transistorized computer system established at the University of Manchester and functional by November 1953, consumed just 150 watts in its final version. [16]

Several other developments in semiconductor technology consist of the integrated circuit (IC) invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor in 1959, silicon dioxide surface area passivation by Carl Frosch and Lincoln Derick in 1955, [17] the very first planar silicon dioxide transistors by Frosch and Derick in 1957, [18] the MOSFET presentation by a Bell Labs group. [19] [20] [21] [22] the planar process by Jean Hoerni in 1959, [23] [24] [25] and the microprocessor created by Ted Hoff, Federico Faggin, Masatoshi Shima, and Stanley Mazor at Intel in 1971. These crucial creations led to the development of the individual computer (PC) in the 1970s, and the development of details and communications innovation (ICT). [26]

By 1984, according to the National Westminster Bank Quarterly Review, the term info technology had been redefined as “The development of cable tv was enabled by the merging of telecommunications and calculating innovation (… typically known in Britain as infotech).” We then begin to see the look of the term in 1990 contained within documents for the International Organization for Standardization (ISO). [27]

Innovations in technology have actually already revolutionized the world by the twenty-first century as individuals were able to access various online services. This has actually altered the labor force drastically as thirty percent of U.S. workers were currently in professions in this profession. 136.9 million people were personally linked to the Internet, which was comparable to 51 million households. [28] Along with the Internet, brand-new kinds of were also being introduced throughout the world, which has enhanced effectiveness and made things easier around the world.

Together with innovation transforming society, millions of procedures might be performed in seconds. Innovations in interaction were also crucial as people began to rely on the computer to communicate through telephone lines and cable. The intro of the email was thought about revolutionary as “business in one part of the world could interact by e-mail with suppliers and purchasers in another part of the world …” [29]

Not just personally, computers and innovation have actually also revolutionized the marketing market, resulting in more buyers of their items. In 2002, Americans exceeded $28 billion in items just online alone while e-commerce a decade later on led to $289 billion in sales. [29] And as computers are rapidly ending up being more sophisticated day by day, they are ending up being more utilized as people are ending up being more dependent on them during the twenty-first century.

Data processing

Storage

Early electronic computer systems such as Colossus made use of punched tape, a long strip of paper on which data was represented by a series of holes, an innovation now outdated. [30] Electronic information storage, which is utilized in modern-day computers, dates from The second world war, when a type of delay-line memory was developed to remove the clutter from radar signals, the very first practical application of which was the mercury delay line. [31] The very first random-access digital storage gadget was the Williams tube, which was based on a standard cathode ray tube. [32] However, the details stored in it and delay-line memory was volatile in the truth that it had to be continually refreshed, and hence was lost once power was gotten rid of. The earliest kind of non-volatile computer storage was the magnetic drum, created in 1932 [33] and utilized in the Ferranti Mark 1, the world’s very first commercially offered general-purpose electronic computer. [34]

IBM introduced the first disk drive in 1956, as an element of their 305 RAMAC computer system. [35]:6 Most digital data today is still stored magnetically on hard drives, or optically on media such as CD-ROMs. [36]:4 -5 Until 2002 most details was stored on analog gadgets, however that year digital storage capability went beyond analog for the very first time. Since 2007 [upgrade], almost 94% of the data stored around the world was held digitally: [37] 52% on hard disks, 28% on optical gadgets, and 11% on digital magnetic tape. It has been approximated that the worldwide capacity to save details on electronic devices grew from less than 3 exabytes in 1986 to 295 exabytes in 2007, [38] doubling approximately every 3 years. [39]

Databases

Database Management Systems (DMS) emerged in the 1960s to deal with the problem of keeping and obtaining big amounts of data precisely and rapidly. An early such system was IBM’s Information Management System (IMS), [40] which is still widely deployed more than 50 years later on. [41] IMS stores data hierarchically, [40] however in the 1970s Ted Codd proposed an alternative relational storage design based upon set theory and predicate logic and the familiar ideas of tables, rows, and columns. In 1981, the first commercially readily available relational database management system (RDBMS) was released by Oracle. [42]

All DMS include components, they enable the data they store to be accessed at the same time by numerous users while preserving its integrity. [43] All databases prevail in one point that the structure of the data they include is specified and stored separately from the information itself, in a database schema. [40]

Over the last few years, the extensible markup language (XML) has actually ended up being a popular format for data representation. Although XML information can be saved in regular file systems, it is commonly kept in relational databases to benefit from their “robust execution verified by years of both theoretical and useful effort.” [44] As a development of the Standard Generalized Markup Language (SGML), XML’s text-based structure uses the advantage of being both maker- and human-readable. [45]

Transmission

Data transmission has 3 elements: transmission, proliferation, and reception. [46] It can be broadly classified as broadcasting, in which information is sent unidirectionally downstream, or telecommunications, with bidirectional upstream and downstream channels. [38]

XML has actually been progressively utilized as a way of information interchange since the early 2000s, [47] particularly for machine-oriented interactions such as those involved in web-oriented procedures such as SOAP, [45] describing “data-in-transit instead of … data-at-rest”. [47]

Manipulation

Hilbert and Lopez recognize the rapid pace of technological change (a kind of Moore’s law): machines’ application-specific capacity to calculate information per capita approximately doubled every 14 months in between 1986 and 2007; the per capita capacity of the world’s general-purpose computers doubled every 18 months during the exact same 20 years; the worldwide telecommunication capability per capita doubled every 34 months; the world’s storage capacity per capita needed approximately 40 months to double (every 3 years); and per capita broadcast info has actually doubled every 12.3 years. [38]

Massive amounts of data are saved around the world every day, however unless it can be examined and presented efficiently it basically resides in what have actually been called data burial places: “information archives that are hardly ever checked out”. [48] To address that concern, the field of data mining – “the process of discovering interesting patterns and understanding from big quantities of data” [49] – emerged in the late 1980s. [50]

Email

The innovation and services it offers for sending out and getting electronic messages (called “letters” or “electronic letters”) over a distributed (consisting of worldwide) computer system network. In regards to the structure of aspects and the concept of operation, e-mail almost repeats the system of routine (paper) mail, borrowing both terms (mail, letter, envelope, accessory, box, shipment, and others) and characteristic features – ease of use, message transmission hold-ups, enough reliability and at the very same time no guarantee of delivery. The benefits of e-mail are: easily viewed and kept in mind by a person addresses of the type user_name@domain_name (for instance, somebody@example.com); the ability to move both plain text and formatted, in addition to approximate files; self-reliance of servers (in the basic case, they address each other straight); adequately high dependability of message shipment; ease of use by humans and programs.

Disadvantages of email: the presence of such a phenomenon as spam (enormous marketing and viral mailings); the theoretical impossibility of ensured shipment of a specific letter; possible delays in message shipment (up to numerous days); limits on the size of one message and on the overall size of messages in the mailbox (individual for users).

Search system

A software and hardware complex with a web interface that provides the capability to look for info on the Internet. A search engine normally indicates a site that hosts the interface (front-end) of the system. The software application part of a search engine is a search engine (search engine) – a set of programs that provides the functionality of an online search engine and is generally a trade trick of the online search engine designer business. Most search engines try to find details on World Wide Web websites, however there are also systems that can search for files on FTP servers, products in online stores, and information on Usenet newsgroups. Improving search is one of the priorities of the contemporary Internet (see the Deep Web short article about the primary issues in the work of online search engine).

Commercial results

Companies in the infotech field are often talked about as a group as the “tech sector” or the “tech market.” [51] [52] [53] These titles can be misguiding sometimes and must not be misinterpreted for “tech business;” which are typically large scale, for-profit corporations that offer consumer technology and software. It is also worth keeping in mind that from a business viewpoint, Information innovation departments are a “cost center” the majority of the time. A cost center is a department or staff which sustains expenses, or “costs”, within a business instead of creating profits or earnings streams. Modern businesses rely greatly on innovation for their day-to-day operations, so the costs entrusted to cover technology that helps with organization in a more effective manner are generally viewed as “just the expense of doing company.” IT departments are allocated funds by senior management and need to try to achieve the preferred deliverables while remaining within that budget plan. Government and the economic sector might have different funding systems, however the concepts are more-or-less the exact same. This is an often ignored factor for the quick interest in automation and synthetic intelligence, however the consistent pressure to do more with less is opening the door for automation to take control of a minimum of some minor operations in large business.

Many companies now have IT departments for managing the computers, networks, and other technical locations of their companies. Companies have likewise sought to incorporate IT with organization outcomes and decision-making through a BizOps or business operations department. [54]

In an organization context, the Information Technology Association of America has specified info innovation as “the study, design, advancement, application, application, support, or management of computer-based info systems”. [55] [page needed] The responsibilities of those working in the field include network administration, software advancement and setup, and the planning and management of a company’s technology life cycle, by which hardware and software are preserved, updated, and replaced.

Information services

Information services is a term rather loosely applied to a range of IT-related services provided by business companies, [56] [57] [58] as well as information brokers.

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U.S. Employment circulation of computer system systems design and associated services, 2011 [59]

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U.S. Employment in the computer systems and style related services industry, in thousands, 1990-2011 [59]

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U.S. Occupational development and incomes in computer systems style and related services, 2010-2020 [59]

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U.S. predicted percent modification in employment in selected occupations in computer systems style and related services, 2010-2020 [59]

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U.S. forecasted typical yearly percent change in output and work in selected markets, 2010-2020 [59]

Ethics

The field of info ethics was established by mathematician Norbert Wiener in the 1940s. [60]:9 Some of the ethical issues associated with making use of details innovation include: [61]:20 -21

– Breaches of copyright by those downloading files saved without the permission of the copyright holders.
– Employers monitoring their employees’ emails and other Internet usage.
Unsolicited emails.
Hackers accessing online databases.
– Website setting up cookies or spyware to keep track of a user’s online activities, which might be utilized by information brokers.

IT jobs

Research recommends that IT projects in business and public administration can quickly become considerable in scale. Work carried out by McKinsey in cooperation with the University of Oxford recommended that half of all large-scale IT tasks (those with preliminary expense quotes of $15 million or more) often failed to maintain costs within their initial spending plans or to complete on time. [62]

Information and interactions innovation (ICT).
IT infrastructure.
Outline of infotech.
Knowledge society.

Notes

^ On the later on more broad application of the term IT, Keary remarks: “In its original application ‘details innovation’ was suitable to explain the merging of innovations with application in the vast field of data storage, retrieval, processing, and dissemination. This helpful conceptual term has given that been converted to what purports to be of excellent use, but without the support of meaning … the term IT does not have substance when used to the name of any function, discipline, or position.” [8] References

Citations

^ Cosker, Glynn (2023 ), “What Is Information Technology? A Beginner’s Guide to the World of IT”, Technology Blog, Rasmussen University.
^ “Computer Technology Definition”. Law Insider. Retrieved 11 July 2022. ^ Forbes Technology Council, 16 Key Steps To Successful IT Project Management, released 10 September 2020, accessed 23 June 2023
^ Hindarto, Djarot (30 August 2023). “The Management of Projects is Improved Through Enterprise Architecture on Project Management Application Systems”. International Journal Software Engineering and Computer Technology (IJSECS). 3 (2 ): 151-161. doi:10.35870/ ijsecs.v3i2.1512. ISSN 2776-3242.
^ a b Butler, Jeremy G., A History of Information Technology and Systems, University of Arizona, archived from the initial on 5 August 2012, obtained 2 August 2012
^ a b Leavitt, Harold J.; Whisler, Thomas L. (1958 ), “Management in the 1980s”, Harvard Business Review, 11.
^ Chandler, Daniel; Munday, Rod (10 February 2011), “Infotech”, A Dictionary of Media and Communication (first ed.), Oxford University Press, ISBN 978-0199568758, obtained 1 August 2012, Commonly a synonym for computer systems and computer system networks but more broadly designating any technology that is used to create, store, process, and/or distribute details digitally, including television and telephone.
^ Ralston, Hemmendinger & Reilly (2000 ), p. 869.
^ Slotten, Hugh Richard (1 January 2014). The Oxford Encyclopedia of the History of American Science, Medicine, and Technology. Oxford University Press. doi:10.1093/ acref/9780199766666.001.0001. ISBN 978-0-19-976666-6.
^ Henderson, H. (2017 ). computer technology. In H. Henderson, Facts on File science library: Encyclopedia of computer technology and technology. (3rd ed.). [Online] New York: Facts On File.
^ Schmandt-Besserat, Denise (1981 ), “Decipherment of the earliest tablets”, Science, 211 (4479 ): 283-285, Bibcode:1981 Sci … 211..283 S, doi:10.1126/ science.211.4479.283, ISSN 0036-8075, PMID 17748027.
^ Wright (2012 ), p. 279.
^ Chaudhuri (2004 ), p. 3.
^ Lavington (1980 ), p. 11.
^ Enticknap, Nicholas (Summer 1998), “Computing’s Golden Jubilee”, Resurrection (20 ), ISSN 0958-7403, archived from the original on 9 January 2012, obtained 19 April 2008.
^ Cooke-Yarborough, E. H. (June 1998), “Some early transistor applications in the UK”, Engineering Science & Education Journal, 7 (3 ): 100-106, doi:10.1049/ esej:19980301 (non-active 7 December 2024), ISSN 0963-7346 citation: CS1 maint: DOI inactive since December 2024 (link).
^ US2802760A, Lincoln, Derick & Frosch, Carl J., “Oxidation of semiconductive surfaces for regulated diffusion”, issued 1957-08-13
^ Frosch, C. J.; Derick, L (1957 ). “Surface Protection and Selective Masking during Diffusion in Silicon”. Journal of the Electrochemical Society. 104 (9 ): 547. doi:10.1149/ 1.2428650.
^ KAHNG, D. (1961 ). “Silicon-Silicon Dioxide Surface Device”. Technical Memorandum of Bell Laboratories: 583-596. doi:10.1142/ 9789814503464_0076. ISBN 978-981-02-0209-5.
^ Lojek, Bo (2007 ). History of Semiconductor Engineering. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg. p. 321. ISBN 978-3-540-34258-8.
^ Ligenza, J.R.; Spitzer, W.G. (1960 ). “The systems for silicon oxidation in steam and oxygen”. Journal of Physics and Chemistry of Solids. 14: 131-136. Bibcode:1960 JPCS … 14..131 L. doi:10.1016/ 0022-3697( 60 )90219-5.
^ Lojek, Bo (2007 ). History of Semiconductor Engineering. Springer Science & Business Media. p. 120. ISBN 9783540342588.
^ Lojek, Bo (2007 ). History of Semiconductor Engineering. Springer Science & Business Media. pp. 120 & 321-323. ISBN 9783540342588.
^ Bassett, Ross Knox (2007 ). To the Digital Age: Research Labs, Start-up Companies, and the Rise of MOS Technology. Johns Hopkins University Press. p. 46. ISBN 9780801886393.
^ US 3025589 Hoerni, J. A.: “Method of Manufacturing Semiconductor Devices” filed May 1, 1959
^ “Advanced information on the Nobel Prize in Physics 2000” (PDF). Nobel Prize. June 2018. Archived (PDF) from the initial on 17 August 2019. Retrieved 17 December 2019.
^ Information technology. (2003 ). In E.D. Reilly, A. Ralston & D. Hemmendinger (Eds.), Encyclopedia of computer system science. (fourth ed.).
^ Stewart, C.M. (2018 ). Computers. In S. Bronner (Ed.), Encyclopedia of American research studies. [Online] Johns Hopkins University Press.
^ a b Northrup, C.C. (2013 ). Computers. In C. Clark Northrup (Ed.), Encyclopedia of world trade: from ancient times to the present. [Online] London: Routledge.
^ Alavudeen & Venkateshwaran (2010 ), p. 178.
^ Lavington (1998 ), p. 1.
^ “Early computers at Manchester University”, Resurrection, 1 (4 ), Summer 1992, ISSN 0958-7403, archived from the initial on 28 August 2017, retrieved 19 April 2008.
^ Universität Klagenfurt (ed.), “Magnetic drum”, Virtual Exhibitions in Informatics, archived from the initial on 21 June 2006, obtained 21 August 2011.
^ The Manchester Mark 1, University of Manchester, archived from the initial on 21 November 2008, obtained 24 January 2009.
^ Khurshudov, Andrei (2001 ), The Essential Guide to Computer Data Storage: From Floppy to DVD, Prentice Hall, ISBN 978-0-130-92739-2.
^ Wang, Shan X.; Taratorin, Aleksandr Markovich (1999 ), Magnetic Information Storage Technology, Academic Press, ISBN 978-0-12-734570-3.
^ Wu, Suzanne, “How Much Information Is There on the planet?”, USC News, University of Southern California, retrieved 10 September 2013.
^ a b c Hilbert, Martin; López, Priscila (1 April 2011), “The World’s Technological Capacity to Store, Communicate, and Compute Information”, Science, 332 (6025 ): 60-65, Bibcode:2011 Sci … 332 … 60H, doi:10.1126/ science.1200970, PMID 21310967, S2CID 206531385.
^ “Americas occasions – Video animation on The World’s Technological Capacity to Store, Communicate, and Compute Information from 1986 to 2010”. The Economist. Archived from the initial on 18 January 2012.
^ a b c Ward & Dafoulas (2006 ), p. 2.
^ Olofson, Carl W. (October 2009), A Platform for Enterprise Data Services (PDF), IDC, archived from the initial (PDF) on 25 December 2013, recovered 7 August 2012.
^ Ward & Dafoulas (2006 ), p. 3.
^ Silberschatz, Abraham (2010 ). Database System Concepts. McGraw-Hill Higher Education. ISBN 978-0-07-741800-7.
^ Pardede (2009 ), p. 2.
^ a b Pardede (2009 ), p. 4.
^ Weik (2000 ), p. 361.
^ a b Pardede (2009 ), p. xiii.
^ Han, Kamber & Pei (2011 ), p. 5.
^ Han, Kamber & Pei (2011 ), p. 8.
^ Han, Kamber & Pei (2011 ), p. xxiii.
^ “Technology Sector Snapshot”. The New York City Times. Archived from the original on 13 January 2017. Retrieved 12 January 2017.
^ “Our programmes, campaigns and partnerships”. TechUK. Retrieved 12 January 2017.
^ “Cyberstates 2016”. CompTIA. Retrieved 12 January 2017.
^ “Manifesto Hatched to Close Gap Between Business and IT”. TechNewsWorld. 22 October 2020. Retrieved 22 March 2021.
^ Proctor, K. Scott (2011 ), Optimizing and Assessing Infotech: Improving Business Project Execution, John Wiley & Sons, ISBN 978-1-118-10263-3.
^ “Top Information Services companies”. VentureRadar. Retrieved 8 March 2021.
^ “Follow Information Services on Index.co”. Index.co. Retrieved 8 March 2021.
^ Publishing, Value Line. “Industry Overview: Information Services”. Value Line. Archived from the initial on 20 June 2021. Retrieved 8 March 2021.
^ a b c d e Lauren Csorny (9 April 2013). “U.S. Careers in the growing field of infotech services”. U.S. Bureau of Labor Statistics.
^ Bynum, Terrell Ward (2008 ), “Norbert Wiener and the Rise of Information Ethics”, in van den Hoven, Jeroen; Weckert, John (eds.), Infotech and Moral Philosophy, Cambridge University Press, ISBN 978-0-521-85549-5.
^ Reynolds, George (2009 ), Ethics in Infotech, Cengage Learning, ISBN 978-0-538-74622-9.
^ Bloch, M., Blumberg, S. and Laartz, J., Delivering massive IT projects on time, on spending plan, and on worth, published 1 October 2012, accessed 23 June 2023
Bibliography

Alavudeen, A.; Venkateshwaran, N. (2010 ), Computer Integrated Manufacturing, PHI Learning, ISBN 978-81-203-3345-1
Chaudhuri, P. Pal (2004 ), Computer Organization and Design, PHI Learning, ISBN 978-81-203-1254-8
Han, Jiawei; Kamber, Micheline; Pei, Jian (2011 ), Data Mining: Concepts and Techniques (3rd ed.), Morgan Kaufmann, ISBN 978-0-12-381479-1
Lavington, Simon (1980 ), Early British Computers, Manchester University Press, ISBN 978-0-7190-0810-8
Lavington, Simon (1998 ), A History of Manchester Computers (2nd ed.), The British Computer Society, ISBN 978-1-902505-01-5
Pardede, Eric (2009 ), Open and Novel Issues in XML Database Applications, Information Science Reference, ISBN 978-1-60566-308-1
Ralston, Anthony; Hemmendinger, David; Reilly, Edwin D., eds. (2000 ), Encyclopedia of Computer Technology (fourth ed.), Nature Publishing Group, ISBN 978-1-56159-248-7
van der Aalst, Wil M. P. (2011 ), Process Mining: Discovery, Conformance and Enhancement of Business Processes, Springer, ISBN 978-3-642-19344-6
Ward, Patricia; Dafoulas, George S. (2006 ), Database Management Systems, Cengage Learning EMEA, ISBN 978-1-84480-452-8
Weik, Martin (2000 ), Computer Technology and Communications Dictionary, vol. 2, Springer, ISBN 978-0-7923-8425-0
Wright, Michael T. (2012 ), “The Front Dial of the Antikythera Mechanism”, in Koetsier, Teun; Ceccarelli, Marco (eds.), Explorations in the History of Machines and Mechanisms: Proceedings of HMM2012, Springer, pp. 279-292, ISBN 978-94-007-4131-7

Further reading

Allen, T.; Morton, M. S. Morton, eds. (1994 ), Infotech and the Corporation of the 1990s, Oxford University Press.
– Gitta, Cosmas and South, David (2011 ). Southern Innovator Magazine Issue 1: Mobile Phones and Infotech: United Nations Office for South-South Cooperation. ISSN 2222-9280.
Gleick, James (2011 ). The Information: A History, a Theory, a Flood. New York: Pantheon Books.
Price, Wilson T. (1981 ), Introduction to Computer Data Processing, Holt-Saunders International Editions, ISBN 978-4-8337-0012-2.
– Shelly, Gary, Cashman, Thomas, Vermaat, Misty, and Walker, Tim. (1999 ). Discovering Computers 2000: Concepts for a Connected World. Cambridge, Massachusetts: Course Technology.
– Webster, Frank, and Robins, Kevin. (1986 ). Information Technology – A Luddite Analysis. Norwood, NJ: Ablex.