61,984 articles
Compagnie des chemins de fer de Paris à Lyon et à la Méditerranée
The Compagnie des chemins de fer de Paris à Lyon et à la Méditerranée (PLM) was a French railway company operating Paris–Marseille from 1857 until 1938.
Compagnie des Wagons-Lits
Compagnie des Wagons-Lits, also known as Compagnie Internationale des Wagons-Lits, is a Belgian-founded company that operated sleeping and dining cars on other countries' railways from 1876, founded by Georges Nagelmackers.
Compagnie du chemin de fer de Paris à Orléans
The Compagnie du chemin de fer de Paris à Orléans (PO), often called the Paris–Orléans or Compagnie d'Orléans, was a French railway company founded in 1838.
Compagnie Générale de Télégraphie Sans Fil
Compagnie Générale de Télégraphie Sans Fil (CSF) was a French electronics company founded in 1918 that pioneered wireless telegraphy, broadcasting, and radar, merging into Thomson-CSF in 1968.
Compagnie Générale Transatlantique
Compagnie Générale Transatlantique (CGT), known to travelers as the French Line, was a French shipping company founded in 1855, famous for liners like the Normandie on the Le Havre–New York route.
Compagnie nationale du Rhône
The Compagnie nationale du Rhône (CNR) is a French joint-stock company created in 1933 to develop the Rhône river from Switzerland to the Mediterranean through hydroelectricity, navigation, and irrigation.
Compagnie universelle du canal interocéanique
The Compagnie universelle du canal interocéanique was a French company led by Ferdinand de Lesseps that tried to build a Panama canal from 1881 to 1889.
Companding transform
A companding transform is a nonlinear amplitude mapping applied to an OFDM signal before transmission to reduce peak-to-average power ratio, with decompanding reversed at the receiver.
Companhia de Electricidade de Macau
Companhia de Electricidade de Macau (澳电) is the utility holding Macau's exclusive concession to transmit, distribute, and supply electricity since 1985, extended to 2040, with most power imported from Guangdong.
Companhia Energética de São Paulo
Companhia Energética de São Paulo (CESP) is a Brazilian electricity generation company owned by the Auren Energia group, founded by São Paulo state in 1966 and privatized in 2018.
Companhia Paranaense de Energia
Companhia Paranaense de Energia (Copel) is a Brazilian electric utility headquartered in Curitiba, Paraná. Founded as a state-owned company in 1954, it was privatized in 2023 and serves nearly all of Paraná.
Companhia Paulista de Estradas de Ferro
The Companhia Paulista de Estradas de Ferro was a Brazilian railway founded in 1868 by coffee planters, linking Jundiaí to the interior of São Paulo until it merged into FEPASA in 1971.
Companhia Siderúrgica Nacional
Companhia Siderúrgica Nacional (CSN) is a Brazilian industrial group headquartered in São Paulo, founded in 1941, that produces steel and operates in mining, cement, logistics, and energy.
Compaq
Compaq Computer Corporation, founded in 1982, was an American PC manufacturer famous for producing early IBM compatible systems and becoming the world's largest PC maker before 2002.
Comparator
A comparator, also called a voltage or analog comparator, is an electronic circuit that compares two analog input voltages and outputs a binary signal showing which is higher.
Compare-and-swap
Compare-and-swap (CAS), also called compare and exchange, is an atomic synchronization primitive that writes a new value only when the memory location still holds the expected old value.
Comparison of audio coding formats
A comparison of audio coding formats, the defined ways of compressing digital audio, covering lossy and lossless codecs from mp3 and AAC to Opus and FLAC.
Comparison of C Sharp and Java
A comparison of C# and Java, two similar object-oriented languages running on virtual machines: C# anchors .NET and Unity game development, while Java dominates enterprise back ends and Android.
Comparison of disk encryption software
Comparison of disk encryption software compares the main full disk encryption products: BitLocker on Windows, FileVault on macOS, LUKS on Linux, cross-platform VeraCrypt, and self-encrypting drives.
Comparison of DNS server software
Comparison of DNS server software, also called comparison of DNS servers, reviews the principal open-source DNS programs: BIND 9, Unbound, NSD, Knot DNS, PowerDNS, and CoreDNS.
Comparison of e-book formats
The comparison of e-book formats contrasts EPUB, the open W3C standard; Amazon's proprietary Kindle formats (MOBI, AZW, KFX); and PDF, split between reflowable and fixed-layout designs.
Comparison of file systems
A comparison of file systems, surveying how designs such as journaling ext4 and XFS, copy-on-write ZFS and Btrfs, and flash-oriented F2FS allocate space, survive crashes, and perform.
Comparison of free and open-source software licenses
A comparison of free and open-source software licenses, covering permissive licenses like MIT and Apache-2.0, weak copyleft like MPL 2.0, and strong copyleft licenses like the GPL and AGPL.
Comparison of immersed tube tunnels with bored tunnels and bridges
A comparison of the three principal ways to carry road or rail across a navigable waterway: immersed tube tunnels, bored tunnels beneath the bed, and bridges over it.
Comparison of instruction set architectures
A comparison of instruction set architectures (CPU architectures), the software-visible processor contracts, focusing on x86, Arm, and RISC-V, which differ mainly in encoding, extensibility, and licensing.
Comparison of Intel processors
Comparison of Intel processors is an overview of Intel's consumer CPU lines since Alder Lake, covering hybrid P-core/E-core designs, the Core Ultra generations, and 2023's naming overhaul.
Comparison of Java and C++
Comparison of Java and C++ contrasts two statically typed object-oriented languages: Java runs garbage-collected bytecode on a virtual machine, while C++ compiles to native code with deterministic destruction.
Comparison of lightweight web browsers
A comparison of lightweight web browsers, those designed to run with small demands on memory, CPU, or bandwidth, from Opera Mini's server compression to the text-only Lynx.
Comparison of Linux distributions
Comparison of Linux distributions, also known as Linux distribution comparison, compares package managers, release models, security frameworks, and support lifetimes across major families like Debian, Red Hat, and Arch.
Comparison of Microsoft Windows versions
A comparison of Microsoft Windows versions across the DOS-based consumer line, the Windows NT family, their unification at Windows XP in 2001, and Windows 11.