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analog-computing

27 notes carry this tag — 1 moc, 14 claims, 1 observation, 5 questions, 6 captures. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

• Knowing who wins without knowing how — three quarters of a century of 'solving' Hex that keeps establishing a winner without ever handing over the strategy
  topic map 2026-08-27 · hex, game-theory, john-nash, david-gale, strategy-stealing
• Capture: Do the MONIAC's £400 build cost and ~2% economic-accuracy figures rest on a primary source?
  capture promoted Tier 1 2026-08-20 · analog-computing, economics-history, moniac, phillips, hydraulic-computing
• The popular MONIAC "~2% accuracy" figure traces to an uncited aside in Nicholas Barr's 1988 LSE Quarterly history, and is contradicted by two independent Tier 1–2 accounts that both say ±4%
  claim seedling Tier 2 2026-08-20 · analog-computing, economics-history, moniac, phillips, hydraulic-computing
• No source independent of O. Solovyova's 2000 account corroborates the Lukyanov '115 organizations / 40 cities' deployment figure
  claim seedling 2026-08-20 · analog-computing, engineering-history, ussr, lukyanov, water-integrator
• Two English-language derivative accounts of the Lukyanov integrator drop the '40 cities' detail and diverge to 'used up to the 1990s,' consistent with transmission drift rather than independent knowledge
  claim seedling 2026-08-20 · analog-computing, ussr, lukyanov, water-integrator, source-verification
• The popular "£400 to build the MONIAC" figure is real in LSE's archival record, but prices a different, later machine than the one it's usually attached to — the original 1949 Croydon prototype cost £100
  claim seedling Tier 2 2026-08-20 · analog-computing, economics-history, moniac, phillips, hydraulic-computing
• A. W. Phillips's own 1950 Economica paper states the hydraulic machine's accuracy as "within about ± 4 per cent," not the ~2% figure that circulates today
  claim seedling Tier 1 2026-08-20 · analog-computing, economics-history, moniac, phillips, hydraulic-computing
• English Wikipedia's citation for the Lukyanov water integrator resolves to a Google-Translate wrapper around the same nkj.ru document already cited as this vault's Tier 2 source
  claim seedling Tier 4 2026-08-20 · analog-computing, ussr, lukyanov, water-integrator, wikipedia
• Do the Lukyanov Water Integrator's dates, purpose, and service history rest on more than one Tier-4 source?
  capture promoted 2026-08-18 · analog-computing, engineering-history, ussr, lukyanov, water-integrator
• Does a second independent source corroborate the '115 organizations in 40 cities' Lukyanov-integrator deployment figure (mid-1970s) and the early-1980s digital-displacement point?
  question open 2026-08-18 · analog-computing, engineering-history, ussr, lukyanov, water-integrator
• Do EnCharge EN100's 200 TOPS / 8.25 W and 'up to 20x performance per watt' figures hold against a primary or independent benchmark?
  capture promoted 2026-07-31 · analog-computing, ai-hardware, in-memory-compute, encharge, benchmark
• A 2021 ISSCC paper from Naveen Verma's lab is peer-reviewed primary evidence for EnCharge's switched-capacitor mechanism, but not for the EN100 product's efficiency figures
  claim seedling Tier 1 2026-07-31 · analog-computing, ai-hardware, in-memory-compute, encharge, isscc
• EnCharge's 'up to 20x performance per watt' claim for the EN100 names no comparison baseline
  claim seedling Tier 3 2026-07-31 · analog-computing, ai-hardware, in-memory-compute, encharge, benchmark
• No independent or primary benchmark of EnCharge EN100's 200 TOPS/8.25 W and '20x' figures has surfaced, consistent with the chip's early-access-only status
  claim seedling Tier 3 2026-07-31 · analog-computing, ai-hardware, in-memory-compute, encharge, benchmark
• Shannon and Moore's 1950 analog Hex-playing machine selected its move from the saddle point of an electric potential field
  claim seedling Tier 2 2026-07-12 · claude-shannon, analog-computing, hex, game-ai, history-of-ai
• New analog silicon IS shipping for NN inference — and it bets on capacitors, not memristors
  capture promoted Tier 2 2026-07-11 · analog-computing, ai-hardware, in-memory-compute, inference, hardware-history
• Shannon & Moore's 1950 Hex machine played a board game with an electrical potential field — the move was a saddle point
  capture promoted Tier 2 2026-07-11 · claude-shannon, analog-computing, hex, game-ai, cross-domain-bridge
• EnCharge AI's EN100 does in-memory matrix multiplication with lithography-defined switched capacitors rather than memristors, deriving precision from wire geometry instead of device conductance
  claim seedling Tier 2 2026-07-11 · analog-computing, ai-hardware, in-memory-compute, inference, switched-capacitor
• Modern reconfigurable analog computers target differential equations, not neural networks, and their claimed edge is a solution time independent of problem size
  claim seedling Tier 1 2026-07-11 · analog-computing, differential-equations, ai-hardware, reconfigurable-analog, in-memory-compute
• Is there a primary benchmark (joules, seconds) showing a reconfigurable analog computer beating a digital solver on differential equations, or only the asymptotic 'constant solution time' claim?
  question answered 2026-07-11 · analog-computing, differential-equations, reconfigurable-analog, benchmark, verification
• Do EnCharge EN100's 200 TOPS / 8.25 W and 'up to 20x performance per watt' figures hold against a primary or independent benchmark?
  question open 2026-07-11 · analog-computing, ai-hardware, in-memory-compute, encharge, benchmark
• Hydraulic analog computers were reached independently for economics (Phillips, 1949) and engineering (Lukyanov, 1936)
  observation seedling Tier 4 2026-07-10 · analog-computing, multiple-discovery, cross-domain-bridge, hydraulic-computing, history-of-computing
• Vladimir Lukyanov's 1936 Water Integrator solved differential equations with interconnected water-filled pipes
  claim budding Tier 4 2026-07-10 · analog-computing, engineering-history, ussr, lukyanov, water-integrator
• Bill Phillips built the MONIAC, a hydraulic computer that modeled the UK economy with flowing water, in 1949
  claim seedling Tier 4 2026-07-10 · analog-computing, economics-history, moniac, phillips, history-of-computing
• Do the Lukyanov Water Integrator's dates, purpose, and service history rest on more than one Tier-4 source?
  question answered 2026-07-10 · analog-computing, engineering-history, ussr, lukyanov, water-integrator
• Do the MONIAC's £400 build cost and ~2% economic-accuracy figures rest on a primary source?
  question answered 2026-07-10 · analog-computing, economics-history, moniac, phillips, unverified-quant
• Water as a computer, invented twice: Phillips's MONIAC and Lukyanov's Soviet integrator
  capture promoted 2026-07-09 · hop, analog-computing, economics-history, engineering-history, ussr