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Java Model Railroad Interface
Java Model Railroad Interface (JMRI) is an open source program for model railroad hobbyists, released under GNU General Public License v2. It allows users to control LED lights, horn, or switch the railway of hobbyist open-source or commercials closed-sourced trains. JMRI is a suite of tools distributed via a single download. The two most popular tools are DecoderPro for programming Digital Command Control (DCC) decoders, and PanelPro for controlling layouts. Starting in 2005, JMRI's project administrator, Bob Jacobsen, was involved in a legal dispute with Matt Katzer in the United States District Court for the Northern District of California. Significantly, the United States Court of Appeals for the Federal Circuit ruled that infringing on the copyright of open source software by violating its license terms could result in monetary damages. The case was settled in early 2010.
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Open-source Software
Open-source software (OSS) is Software, computer software that is released under a Open-source license, license in which the copyright holder grants users the rights to use, study, change, and Software distribution, distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a collaborative, public manner. Open-source software is a prominent example of open collaboration, meaning any capable user is able to online collaboration, participate online in development, making the number of possible contributors indefinite. The ability to examine the code facilitates public trust in the software. Open-source software development can bring in diverse perspectives beyond those of a single company. A 2024 estimate of the value of open-source software to firms is $8.8 trillion, as firms would need to spend 3.5 times the amount they currently do without the use of open source software. Open-source code can be used for studying and a ...
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GNU General Public License
The GNU General Public Licenses (GNU GPL or simply GPL) are a series of widely used free software licenses, or ''copyleft'' licenses, that guarantee end users the freedom to run, study, share, or modify the software. The GPL was the first copyleft license available for general use. It was originally written by Richard Stallman, the founder of the Free Software Foundation (FSF), for the GNU Project. The license grants the recipients of a computer program the rights of the Free Software Definition. The licenses in the GPL series are all copyleft licenses, which means that any derivative work must be distributed under the same or equivalent license terms. The GPL is more restrictive than the GNU Lesser General Public License, and even more distinct from the more widely used permissive software licenses such as BSD, MIT, and Apache. Historically, the GPL license family has been one of the most popular software licenses in the free and open-source software (FOSS) domai ...
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Download
In computer networks, download means to ''receive'' data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar systems. This contrasts with uploading, where data is ''sent to'' a remote server. A ''download'' is a file offered for downloading or that has been downloaded, or the process of receiving such a file. Definition Downloading generally transfers entire files for local storage and later use, as contrasted with streaming, where the data is used nearly immediately while the transmission is still in progress and may not be stored long-term. Websites that offer streaming media or media displayed in-browser, such as YouTube, increasingly place restrictions on the ability of users to save these materials to their computers after they have been received. Downloading on computer networks involves retrieving data from a remote system, like a web server, FTP server, or email server, unlike uploading, where data is sent ...
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Digital Command Control
Digital Command Control (DCC) is a standard for a system for the digital operation of model railways that permits locomotives on the same electrical section of track to be independently controlled. The DCC protocol is defined by the Digital Command Control Working group of the US National Model Railroad Association (NMRA), which owns the trademark for the DCC logo. History A digital command control system was developed (under contract by Lenz Elektronik GmbH of Germany) in the 1980s for two German model railway manufacturers, Märklin and Arnold. The first digital decoders that Lenz produced appeared on the market early 1989 for Arnold ( N scale) and mid 1990 for Märklin ( Z scale, H0 scale and 1 gauge; Digital=). Märklin and Arnold exited the agreement over patent issues, but Lenz continued to develop the system. In 1992 Stan Ames, who later chaired the NMRA/DCC Working Group, investigated the Märklin/Lenz system as possible candidate for the NMRA/DCC standards. When the N ...
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Jacobsen V
Jacobsen may refer to: * Jacobsen (surname), including a list of people with the name * Jacobsen Manufacturing, a former American manufacturer ** Jacobsen, a brand of lawn-care products by Textron * Jacobsen Publishing, publisher of several American regional newspapers * Jacobsen (beer), a brand of specialty beers owned by Carlsberg * Miranda, California (formerly Jacobsen's), a place in Humboldt County, California, U.S. See also * Jacobson (other) * Jakobsen Jakobsen is both a surname and a given name. Notable people with the name include: Surname * Alf E. Jakobsen (born 1952), Norwegian politician * Anna Sofie Jakobsen (1860–1913), Norwegian Christian missionary * Annika Jakobsen (born 1997), Dan ..., a surname * Jakobson (surname) * Theodor Jacobsen Observatory, University of Washington, U.S. * H. N. Jacobsens Bókahandil, a bookshop in Tórshavn, Faroe Islands {{disambig ...
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United States District Court For The Northern District Of California
The United States District Court for the Northern District of California (in case citations, N.D. Cal.) is the federal United States district court whose jurisdiction comprises the following counties of California: Alameda, Contra Costa, Del Norte, Humboldt, Lake, Marin, Mendocino, Monterey, Napa, San Benito, San Francisco, San Mateo, Santa Clara, Santa Cruz, and Sonoma. The court hears cases in its courtrooms in Eureka, Oakland, San Francisco, and San Jose. It is headquartered in San Francisco. Cases from the Northern District of California are appealed to the United States Court of Appeals for the Ninth Circuit. Because it covers San Francisco and Silicon Valley, the Northern District of California has become the presumptive destination for major federal lawsuits (such as large class actions and multi-district litigation) involving "Big Tech" defendants. These cases usually involve patent law and intellectual property law (such as copyright law and DMCA issu ...
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United States Court Of Appeals For The Federal Circuit
The United States Court of Appeals for the Federal Circuit (in case citations, Fed. Cir. or C.A.F.C.) is one of the 13 United States courts of appeals. It has special appellate jurisdiction over certain categories of cases in the U.S. federal court system. Specifically, it has exclusive appellate jurisdiction over all U.S. federal cases involving patents, trademark registrations, government contracts, veterans' benefits, public safety officers' benefits, federal employees' benefits, and various other types of cases. The Federal Circuit has no jurisdiction over any criminal, bankruptcy, immigration, or U.S. state law cases. It is headquartered at the Howard T. Markey National Courts Building in Washington, D.C. The Federal Circuit was created in 1982 with enactment of the Federal Courts Improvement Act, which merged the United States Court of Customs and Patent Appeals and the appellate division of the United States Court of Claims, making the judges of the former co ...
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FLOSS Weekly
Leo Laporte (; born November 29, 1956) is the former host of '' The Tech Guy'' weekly radio show and founder of TWiT.tv, an Internet podcast network focusing on technology. He is also a former TechTV technology host (1998–2008) and a technology author. On November 19, 2022, actor, writer, musician, and comedian Steve Martin called into Laporte's radio show to announce Leo's retirement from ''The Tech Guy'' radio show. Laporte's last new radio show was December 18, 2022 with reruns for the remainder of the year. Rich DeMuro later appeared on the show to announce that he would take over in January with a weekly show, recorded on Saturdays, called "Rich On Tech." Background Laporte was born in New York City, the son of geologist Leo F. Laporte. He studied Chinese history at Yale University before dropping out in his junior year to pursue a career in radio broadcasting, where his early on-air names were Dave Allen and Dan Hayes. He began his association with computers with his ...
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Podcast
A podcast is a Radio program, program made available in digital format for download over the Internet. Typically, a podcast is an Episode, episodic series of digital audio Computer file, files that users can download to a personal device or stream to listen to at a time of their choosing. Podcasts are primarily an audio medium, but some distribute in video, either as their primary content or as a supplement to audio; popularised in recent years by video platform YouTube. In 2025, Bloomberg News, Bloomberg reported that a billion people are watching podcasts on YouTube every month. A podcast series usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. Discussion and content within a podcast can range from carefully scripted to completely improvised. Podcasts combine elaborate and artistic sound production with thematic concerns ranging from scientific research to Slice of life, slice-of-life journalism. Many podcast series ...
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