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computer science

IBM

IBM is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand IBM rather than just read about it. In short: International Business Machines Corporation, doing business as IBM (nicknamed Big Blue), is an American multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is a publicly traded company and one of the 30 companies in the Dow Jones Industrial Average.

IBM — main illustration
IBM — illustration

Key takeaways

  • IBM belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect IBM to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of IBM from memory before moving on to harder problems.

Reference excerpt

International Business Machines Corporation, doing business as IBM (nicknamed Big Blue), is an American multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is a publicly traded company and one of the 30 companies in the Dow Jones Industrial Average. IBM is the largest industrial research organization in the world, with 19 research facilities across a dozen countries; for 29 consecutive years, from 1993 to 2021, it held the record for most annual U.S. patents generated by a business. IBM was founded in 1911 as the Computing-Tabulating-Recording Company (CTR), a holding company of manufacturers of record-keeping and measuring systems. It was renamed "International Business Machines" in 1924 and soon became the leading manufacturer of punch-card tabulating systems. During the 1960s and 1970s, the IBM mainframe, exemplified by the System/360 and its successors, was the world's dominant computing platform, with the company producing 80 percent of computers in the U.S. and 70 percent of computers worldwide. Embracing both business and scientific computing, System/360 was the first family of computers designed to cover a complete range of applications from small to large. IBM entered the microcomputer market in 1981 with the IBM Personal Computer; its architecture remains the basis for the majority of personal computers sold today. The company later also found success in the laptop space with the ThinkPad. Since the 1990s, IBM has concentrated on computer services, software, supercomputers, and scientific research; it sold its microcomputer division to Lenovo in 2005. IBM continues to develop mainframes, and its supercomputers have consistently ranked among the most powerful in the world in the 21st century. As one of the world's oldest and largest technology companies, IBM has been responsible for several technological innovations, including the Automated Teller Machine (ATM), Dynamic Random-Access Memory (DRAM), the floppy disk, Generalized Markup Language, the hard disk drive, the magnetic stripe card, the relational database, the SQL programming language, and the Universal Product Code (UPC) barcode. The company has made inroads in advanced computer chips, quantum computing, artificial intelligence, and data infrastructure. IBM employees and alumni have won various recognitions for their scientific research and inventions, including six Nobel Prizes and six Turing Awards.

History

1910s–1950s IBM originated with several technological innovations developed and commercialized in the late 19th century. Julius E. Pitrap patented the computing scale in 1885; Alexander Dey invented the dial recorder (1888); Herman Hollerith patented the Electric Tabulating Machine (1889); and Willard Bundy invented a time clock to record workers' arrival and departure times on a paper tape (1889). On June 16, 1911, their four companies were amalgamated in New York State by Charles Ranlett Flint forming a fifth company, the Computing-Tabulating-Recording Company (CTR) based in Endicott, New York. The five companies had 1,300 employees and offices and plants in Endicott and Binghamton, New York; Dayton, Ohio; Detroit, Michigan; Washington, D.C.; and Toronto, Canada. Collectively, the companies manufactured a wide array of machinery for sale and lease, ranging from commercial scales and industrial time recorders, meat and cheese slicers, to tabulators and punched cards. Thomas J. Watson, Sr., fired from the National Cash Register Company (NCR) by John Henry Patterson, called on Flint and, in 1914, was offered a position at CTR. Watson joined CTR as general manager and then, 11 months later, was made President when antitrust cases relating to his time at NCR were resolved. Having learned Patterson's pioneering business practices, Watson proceeded to put the stamp of NCR onto CTR's companies. He implemented sales conventions, "generous sales incentives, a focus on customer service, an insistence on well-groomed, dark-suited salesmen and had an evangelical fervor for instilling company pride and loyalty in every worker". His favorite slogan, "THINK", became a mantra for each company's employees. During Watson's first four years, revenues reached $9 million ($167 million today) and the company's operations expanded to Europe, South America, Asia and Australia. Watson never liked the clumsy hyphenated name "Computing-Tabulating-Recording Company" and chose to replace it with the more expansive title "International Business Machines" which had previously been used as the name of CTR's Canadian Division; the name was changed on February 14, 1924. By 1933, most of the subsidiaries had been merged into one company, IBM.

World War II

… excerpt ends here. Continue reading the full article.

Illustrations

IBM illustration
IBM illustration
IBM: NACA researchers using an IBM type 704 electronic data processing machine in 1957
NACA researchers using an IBM type 704 electronic data processing machine in 1957
IBM: An IBM System/360 in use at the University of Michigan c. 1969
An IBM System/360 in use at the University of Michigan c. 1969
IBM: IBM guidance computer hardware for the Saturn V Instrument Unit
IBM guidance computer hardware for the Saturn V Instrument Unit

Worked examples

Example 1 — a first encounter with IBM

Start with the simplest possible case. Write down what IBM claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IBM before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IBM ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IBM

In research
IBM appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses IBM in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
IBM is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1911 establishments in New York (state), American companies established in 1911, Cloud computing providers, so understanding it makes those chapters shorter.
In everyday life
Look for IBM outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study IBM in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what IBM means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain IBM out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IBM in simple terms?

International Business Machines Corporation, doing business as IBM (nicknamed Big Blue), is an American multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is a publicly traded company and one of the 30 companies in the Dow Jones Industrial Aver…

Why does IBM matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IBM?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IBM.

Tags

  • 1911 establishments in New York (state)
  • American companies established in 1911
  • Cloud computing providers
  • Collier Trophy recipients
  • Companies based in Westchester County, New York
  • Companies in the Dow Jones Global Titans 50
  • Companies in the Dow Jones Industrial Average
  • Companies in the S&P 500 Dividend Aristocrats
  • Companies listed on the New York Stock Exchange
  • Computer companies of the United States
  • Computer hardware companies
  • Computer systems companies

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