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Hazeltine Corporation

Hazeltine Corporation 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 Hazeltine Corporation rather than just read about it. In short: Hazeltine Corporation was an American defense electronics company, active from 1924 until 1986. It was acquired in 1986 by the Emerson Electric Company, and is part of BAE Systems Inc. since 1999.

Hazeltine Corporation — main illustration
Hazeltine Corporation — illustration

Key takeaways

  • Hazeltine Corporation 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 Hazeltine Corporation to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hazeltine Corporation from memory before moving on to harder problems.

Reference excerpt

Hazeltine Corporation was an American defense electronics company, active from 1924 until 1986. It was acquired in 1986 by the Emerson Electric Company, and is part of BAE Systems Inc. since 1999.

History

1924–1986

The company was founded in 1924 by investors to exploit the Neutrodyne patent of Dr. Louis Alan Hazeltine. Headquartered in Greenlawn, Long Island, New York, since 1955, it had facilities in several other locations in Long Island, including its Wheeler Laboratories facility in Smithtown, New York, manufacturing plants in Riverhead and Little Neck, NY, and a division in Braintree, Massachusetts. Hazeltine Corporation employed 2,600 people by 1981. The company was created primarily to administer and license Hazeltine’s Neutrodyne patents to radio manufacturers. Through these licenses the Hazeltine Corporation received royalties on large numbers of broadcast receivers produced during the early 1920s, when the neutrodyne circuit became one of the dominant commercial receiver designs. The licensing program made the company one of the earliest examples of a technology firm organized around patent licensing rather than manufacturing; see Patents and licensing in early radio. The company originally concentrated on the design of electronic circuits and the licensing of patents. Innovations in radio, monochrome and later color television components allowed the company to grow. One particularly lucrative design was the Automatic Gain Control circuit. This was such a useful feature that almost every AM radio made used this feature, by license from Hazeltine, from about 1930 until the patent expired. Hazeltine Corporation also developed and licensed many of the basic concepts of the NTSC color television system. From 1955 to 1959 the president of the Hazeltine Company was Philip La Follette, former three-term governor of Wisconsin and son of "Fighting Bob" La Follette, who campaigned for president in 1924 as the Progressive Party candidate. The company flourished into the 1980s as a United States Federal defense contractor with particular success as a designer and manufacturer of "Identification Friend or Foe" (IFF) military detection and identification systems.

During the 1970s, as an outgrowth of its defense work, Hazeltine Corp. developed the Hazeltine Terminal, an early monochrome smart terminal. Several improved models followed, including the popular Hazeltine 1500, which found use in the emerging microcomputer market in the late 1970s. The company eventually sold the terminal line to a short-lived third party called Esprit, which was managed by former Hazeltine employees. Hazeltine Corporation's terminal division was spun off into Esprit Systems in January 1983. The name of the spin-off refers to the Hazeltine Esprit terminal, which division management felt Hazeltine was not properly marketing.

1986–present Hazeltine was acquired by the Emerson Electric Company in 1986. In 1990, Emerson spun off its Government and Defense Group, including Hazeltine, to form ESCO Electronics Corporation.

In 1996, Hazeltine was acquired from ESCO by GEC-Marconi Electronic Systems Corp., a US subsidiary of The General Electric Company, and renamed GEC-Marconi Hazeltine. ESCO was represented by investment banking firm Quarterdeck Investment Partners, Inc. in a deal which valued Hazeltine at $110 million. With the 1999 merger of GEC-Marconi and British Aerospace to form BAE Systems, GEC-Marconi Hazeltine was renamed BAE Systems Advanced Systems. In 2002, it was renamed BAE Systems CNIR (Communication, Navigation, Identification and Reconnaissance). In a 2007 reorganization, the division was folded into BAE Systems Electronics and Integrated Solutions and is currently known as BAE Systems Sensor Systems.

References

External links

Richard S. Shuford information on Hazeltine terminals Description of Hazeltine 2000 video terminal, ca. 1972, at Columbia University Hazeltine 2000 photo Molnar, Mike, Hazeltine, the Neutrodyne and the Hazeltine Corporation, The AWA Review (Vol. 26, 2013).

Illustrations

Hazeltine Corporation illustration
Hazeltine Corporation: Hazeltine AN-APX-6 Identification Friend or Foe (IFF) transponder, introduced 1950
Hazeltine AN-APX-6 Identification Friend or Foe (IFF) transponder, introduced 1950
Hazeltine Corporation: Hazeltine 1500 computer terminal from 1977
Hazeltine 1500 computer terminal from 1977
Hazeltine Corporation: Wordmark of GEC-Marconi Hazeltine
Wordmark of GEC-Marconi Hazeltine

Worked examples

Example 1 — a first encounter with Hazeltine Corporation

Start with the simplest possible case. Write down what Hazeltine Corporation 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 Hazeltine Corporation 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 Hazeltine Corporation 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 Hazeltine Corporation

In research
Hazeltine Corporation 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 Hazeltine Corporation 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
Hazeltine Corporation is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1924 establishments in New York (state), 1986 disestablishments in New York (state), 1986 mergers and acquisitions, so understanding it makes those chapters shorter.
In everyday life
Look for Hazeltine Corporation 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 Hazeltine Corporation in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hazeltine Corporation 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 Hazeltine Corporation out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hazeltine Corporation in simple terms?

Hazeltine Corporation was an American defense electronics company, active from 1924 until 1986. It was acquired in 1986 by the Emerson Electric Company, and is part of BAE Systems Inc. since 1999.

Why does Hazeltine Corporation 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 Hazeltine Corporation?

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 Hazeltine Corporation.

Tags

  • 1924 establishments in New York (state)
  • 1986 disestablishments in New York (state)
  • 1986 mergers and acquisitions
  • 1996 mergers and acquisitions
  • 2007 mergers and acquisitions
  • Avionics companies
  • Companies formerly listed on the New York Stock Exchange
  • Computer companies established in 1924
  • Defunct companies based in New York (state)
  • Defunct computer companies based in New York (state)
  • Defunct computer companies of the United States
  • Defunct computer hardware companies

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