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Hardware random number generator
A hardware random number generator (HWRNG) is a physical device or circuit, typically built into a processor, that produces random bits from unpredictable physical processes like thermal noise.
Hardware register
A hardware register is a small, named storage location inside a processor or digital device, holding bits the hardware reads or writes in a single cycle.
Hardware root of trust
A hardware root of trust is a minimally complex hardware element, or hardware with immutable software, implicitly trusted for security functions such as device identity, secure boot, and cryptography.
Hardware security module
A hardware security module (HSM) is a dedicated cryptographic processor that protects cryptographic keys in tamper-resistant hardware, performing encryption and signing so keys stay unexposed.
Hardware virtualization
Hardware virtualization: CPU/ISA features (Intel VT-x, AMD-V, ARM Virtualization Extensions) supporting fully virtualized machines via root/non-root modes, VMCS/VMCB, EPT/NPT, and IOMMU; from IBM System/370 (1972) to x86 extensions (2005-2008).
Hardware-aware neural architecture search
Hardware-aware neural architecture search (HW-NAS) is a machine learning method that searches for neural network architectures while including hardware metrics such as latency, energy, or memory footprint in the objective.
Hardware-in-the-loop simulation
Hardware-in-the-loop simulation, also known as HIL or HWIL, is a testing technique in which a real controller is connected to a real-time simulator of the physical system.
Hardware-in-the-loop training
Hardware-in-the-loop (HIL) training is a testing method where real hardware, such as an autonomous vehicle's onboard computer, runs against a simulated environment on separate computing hardware.
Hardware-vendor open model strategy
Hardware-vendor open model strategy is the practice, prominent by 2026, of chipmakers such as AMD and NVIDIA publishing open-weight AI models to sell hardware rather than monetize the models.
Hardware/software co-design
Hardware/software co-design is a methodology, emerging in the early 1990s, in which hardware and software are designed concurrently to jointly optimize performance, power, cost, and reliability, as in Google's TPUs.
Hardwick Hall
Hardwick Hall is a Grade I listed Elizabethan country house in Derbyshire, England, built between 1590 and 1597 for Bess of Hardwick, and renowned for its huge windows and tapestries.
Hardy Cross
Hardy Cross (1885–1959) was an American structural engineer who created the moment distribution method for analyzing statically indeterminate frames and pipe networks, teaching at Illinois and Yale.
Hardy Cross method
The Hardy Cross method is an iterative technique for computing flows in closed-loop pipe networks, introduced in 1936 by Hardy Cross of the University of Illinois.
Harebrained Schemes
Harebrained Schemes is a Seattle video game developer founded in 2011 by Jordan Weisman and Mitch Gitelman, best known for the Shadowrun Returns trilogy and BattleTech.
Harecastle Tunnel
Harecastle Tunnel is a canal tunnel on the Trent and Mersey Canal at Kidsgrove, Staffordshire, England, made up of two parallel tunnels built by James Brindley and Thomas Telford.
Haren S. Gandhi
Haren S. Gandhi (1941–2010) was an Indian-born American chemical engineer who spent 43 years at Ford Motor Company shaping automotive emissions control, winning the 2002 National Medal of Technology.
Harewood House
Harewood House is a Grade I listed 18th-century country house near Leeds in West Yorkshire, built for Edwin Lascelles from 1759 to 1771 and still home to the Lascelles family.
Hargreaves equation
The Hargreaves equation, usually called the Hargreaves–Samani equation, is an empirical equation published by George Hargreaves and Zohrab Samani in 1985 that estimates grass reference evapotranspiration from temperature data alone.
Harihar fort
Harihar fort, also called Harshagad (हरिहरगड), is a hill fort in the Trimbakeshwar range of Nashik district, Maharashtra, India, known for a near-vertical rock-cut staircase of 117 steps, attributed to the Yadava dynasty.
Haringvliet Sluices
The Haringvliet Sluices (Haringvlietsluizen) are 17 discharge openings in the Haringvliet Dam, part of the Dutch Delta Works, built between 1956 and 1970 to discharge Rhine and Meuse water to the sea.
Harish Bhaskaran
Harish Bhaskaran is a materials scientist and Professor of Applied Nanomaterials at Oxford, known for phase-change photonics and photonic computing, and a Director at Apple since 2025.
Harishchandragad (हरिश्चंद्रगड)
Harishchandragad (हरिश्चंद्रगड) is a historical hill fort in the Ahmednagar district of Maharashtra, India, standing about 1,424 meters high in the Western Ghats and dating to the 6th century.
Harl Preslar Aldrich Jr.
Harl Preslar Aldrich Jr. (1923–2014) was an American geotechnical engineer who cofounded Haley & Aldrich and was elected to the National Academy of Engineering in 1984.
Harley Davidson and the Marlboro Man
Harley Davidson and the Marlboro Man is a 1991 American neo-Western biker action film directed by Simon Wincer, starring Mickey Rourke and Don Johnson, a box-office failure later known for its trademark dispute and cult following.
Harley-Davidson
Harley-Davidson, formally the Harley-Davidson Motor Company, is an American motorcycle manufacturer founded in Milwaukee in 1903, known for heavyweight cruisers, touring bikes, and a lifestyle brand.
Harley-Davidson engine timeline
The Harley-Davidson engine timeline traces the company's engines from the 1903 F-Head single to the Milwaukee-Eight, with the Big Twin keeping a 45-degree V-twin since 1909.
Harley-Davidson Evolution engine
The Harley-Davidson Evolution engine, nicknamed "Blockhead," is an air-cooled 45-degree pushrod V-twin introduced for 1984 to replace the Shovelhead, powering about one million big twins through 1999.
Harley-Davidson FL
The Harley-Davidson FL, known as the Electra Glide, is Harley-Davidson's big-twin heavyweight motorcycle line, introduced in 1941 and carried through successive engines into today's Touring, police, and CVO ranges.
Harley-Davidson Knucklehead engine
Harley-Davidson built the Knucklehead engine from 1936 to 1947; this 45-degree OHV V-twin was the company's first production engine and established the architecture for later big twins.
Harley-Davidson Sportster
The Harley-Davidson Sportster is a line of Harley-Davidson motorcycles produced since 1957, spanning air-cooled Ironhead and Evolution V-Twins until 2022 and the liquid-cooled Sportster S.