Crossword clues for accumulator
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Accumulator \Ac*cu"mu*la`tor\, n. [L.]
One who, or that which, accumulates, collects, or amasses.
(Mech.) An apparatus by means of which energy or power can be stored, such as the cylinder or tank for storing water for hydraulic elevators, the secondary or storage battery used for accumulating the energy of electrical charges, etc.
A system of elastic springs for relieving the strain upon a rope, as in deep-sea dredging.
Wiktionary
n. 1 One who, or that which, accumulates. 2 (context British English) A wet cell storage battery. 3 (context betting English) A collective bet on successive events, with both stake and winnings being carried forward to accumulate progressively. 4 (context mechanics English) A system of elastic springs for relieve the strain upon a rope, as in deep-sea dredging. 5 (context manufacturing English) A vessel containing pressurized hot water ready for release as steam. 6 (context engineering hydraulics English) A container which stores hydraulic power for release, in the form of a pressurized fluid (often suspended within a larger tank of fluid under pressure). 7 (context computer science English) A register in a calculator or computer used for holding the intermediate results of a computation or data transfer. 8 (context finance English) A derivative contract under which the seller commits to sell shares of an underlying security at a certain strike price, which the buyer is obligated to buy.
WordNet
n. a person who is employed to collect payments (as for rent or taxes) [syn: collector, gatherer]
a voltaic battery that stores electric charge [syn: storage battery]
(computer science) a register that has a built-in adder that adds an input number to the contents of the accumulator [syn: accumulator register]
Wikipedia
In a computer's central processing unit ( CPU), an accumulator is a register in which intermediate arithmetic and logic results are stored.
Without a register like an accumulator, it would be necessary to write the result of each calculation (addition, multiplication, shift, etc.) to main memory, perhaps only to be read right back again for use in the next operation. Access to main memory is slower than access to a register like the accumulator because the technology used for the large main memory is slower (but cheaper) than that used for a register. Early electronic computer systems were often split into two groups, those with accumulators and those without.
Modern computer systems often have multiple general purpose registers that operate as accumulators, and the term is no longer as common as it once was. However, a number of special-purpose processors still use a single accumulator for their work, in order to simplify their design.
Accumulator may refer to:
- Accumulator (bet), a parlay bet
- Accumulator (computing), in a CPU, a processor register for storing intermediate results
- Accumulator (computer vision), discrete cell structure to count votes, standard component of the Hough transform.
- Accumulator (cryptography), a value, determined by a set of values, that allows you to verify if any one of the original values is a member of the set
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Accumulator (energy), an apparatus for storing energy or power
- Capacitor, in electrical engineering, also known by the obsolete term accumulator
- Electrochemical cell, a cell that stores electrical energy, typically used in rechargeable batteries
- Hydraulic accumulator, an energy storage device using hydraulic fluid under pressure
- Accumulator (structured product), a financial contract used by clients (usually individuals) to accumulate stock positions over time
- Accumulator 1, a Czech film
- Dynamic accumulator, a plant that mines nutrients from the soil through its roots
An accumulator is an energy storage device: a device which accepts energy, stores energy, and releases energy as needed. Some accumulators accept energy at a low rate (low power) over a long time interval and deliver the energy at a high rate (high power) over a short time interval. Some accumulators accept energy at a high rate over a short time interval and deliver the energy at a low rate over longer time interval. Some accumulators typically accept and release energy at comparable rates. Various devices can store thermal energy, mechanical energy, and electrical energy. Energy is usually accepted and delivered in the same form. Some devices store a different form of energy than what they receive and deliver performing energy conversion on the way in and on the way out.
Examples of accumulators include steam accumulators, mainsprings, flywheel energy storage, hydraulic accumulators, rechargeable batteries, capacitors, compensated pulsed alternators (compulsators), and pumped-storage hydroelectric plants.
In general usage in an electrical context, the word accumulator normally refers to a lead–acid battery.
The London Tower Bridge is operated via an accumulator. The original raising mechanism was powered by pressurised water stored in several hydraulic accumulators. In 1974, the original operating mechanism was largely replaced by a new electro-hydraulic drive system.
Accumulators (aka: share forward accumulators) are financial derivative products sold by an issuer (seller) to investors (the buyer) that require the issuer to sell shares of some underlying security at a predetermined strike price, settled periodically. This allows the investor to "accumulate" holdings in the underlying security over the term of the contract.
Sometimes known as "I kill you later" contracts, accumulators typically last for a year or less and terminate early ("knock-out") if the stock price goes above a threshold ("barrier").
The basic idea of an accumulator contract is that the buyer speculates a company will trade between a certain price range (the range between the strike and the knock out price) within the contract period, and the issuer bets that stock will fall below the strike price. Note that the buyer holds an obligation to buy the shares at the strike price and not the option to buy. Likewise, the issuer holds an obligation to sell shares at the strike price.
A cryptographic accumulator is a one way membership function. It answers a query as to whether a potential candidate is a member of a set without revealing the individual members of the set. One trivial example is how large composite numbers accumulate their prime factors, as it's currently impractical to factor a composite number, but relatively easy to divide a specific prime into another number to see if it is one of the factors and/or to factor it out. New members may be added or subtracted to the set of factors simply by multiplying or factoring out the number respectively. More practical accumulators use a quasi-commutative hash function where the size (number of bits) of the accumulator does not grow with the number of members.
The concept was introduced by J. Benaloh and M. de Mare in 1993
The concept has received renewed interest recently due to the proposed Zerocoin add on to bitcoin, which employs cryptographic accumulators to eliminate trackable linkage in the bitcoin blockchain, which would make bitcoin anonymous and untraceable, increasing privacy of transactions.
Usage examples of "accumulator".
Stevens connected up the enormous fixed or dirigible projectors to whatever accumulator cells were available through sensitive relays, all of which he could close by means of one radio impulse.
Most of the masses, whose projectors were fed by comparatively few accumulator cells, darted away entire with a stupendous acceleration.
While the stream of power now flowing was ample to operate the lookout plates, yet it would be many hours before the accumulator cells would be in condition to drive the craft even that short distance.
Wielding torch, pliers, and spanner with practiced hand, she repaired or cut out of circuit the damaged accumulator cells and reunited the ends of each severed power lead.
Vorkulian wall-screen generators, absorbers, and dissipators was installed, with sufficient accumulator capacity for their operation.
When they leaked the salt water was apt to affect the accumulators and chlorine gas was released to torment and suffocate the crews.
But to get going again, the receptors receive the beam and from them the power is sent to the accumulators, where it is stored.
From the accumulators, then, the power is fed to the converters, each of which is backed by a projector.
She has too many batteries of accumulators, too many life-boats, too many bulkheads and airbreaks, too many and too much of everything.
If so, and if enough batteries of accumulators are left intact to give them anywhere nearly full power, we can get an acceleration that will make a lifeboat look sick.
Stevens had read his meters, learning with satisfaction that the full current was still flowing into the accumulators, he began to cut up the meat.
Nadia brought in meat and vegetables and stored them away, Stevens attacked the problem of constructing the pair of tight-beam, auto-dirigible transmitter and receptor units which would connect his great turbo-alternator to the accumulators of their craft, wherever it might be in space.
They do not use accumulators, and therefore their dissipation is limited to their maximum reception, which is about seventy thousand kilofranks.
Out of sight underneath the pier were the cogwheels and accumulator tanks that helped operate the bascule on this side of the river.
All I got out of it was where to find an ashpan drop-bottom, steam accumulators and why they are still used, and the ability to recognize a three-cylinder locomotive by sound alone.