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ετυμολογία

accumulator grid - translation to ελληνικό

ARITHMETIC REGISTER

Accumulator machine; Accumulator-based architecture

accumulator grid

πλέγμα συσσωρευτού

hydraulic accumulator

RESERVOIR TO STORE AND STABILISE FLUID PRESSURE

Hydraulic accumulators; Pressure accumulator; Accumulator tower

υδραυλικός συσσωρευτής

πλέγμα συσσωρευτού

accumulator grid

Ορισμός

accumulator

<processor> In a central processing unit, a register in which intermediate results are stored. Without an accumulator, it would be necessary to write the result of each calculation (addition, multiplication, shift, etc.) to {main memory} and read them back. Access to main memory is slower than access to the accumulator which usually has direct paths to and from the arithmetic and logic unit (ALU). The canonical example is summing a list of numbers. The accumulator is set to zero initially, each number in turn is added to the value in the accumulator and only when all numbers have been added is the result written to main memory. Modern CPUs usually have many registers, all or many of which can be used as accumulators. For this reason, the term "accumulator" is somewhat archaic. Use of it as a synonym for "register" is a fairly reliable indication that the user has been around for quite a while and/or that the architecture under discussion is quite old. The term in full is almost never used of microprocessor registers, for example, though symbolic names for arithmetic registers beginning in "A" derive from historical use of the term "accumulator" (and not, actually, from "arithmetic"). Confusingly, though, an "A" register name prefix may also stand for "address", as for example on the Motorola 680x0 family. 2. <programming> A register, memory location or variable being used for arithmetic or logic (as opposed to addressing or a loop index), especially one being used to accumulate a sum or count of many items. This use is in context of a particular routine or stretch of code. "The FOOBAZ routine uses A3 as an accumulator." [Jargon File] (1999-04-20)

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Βικιπαίδεια

Accumulator (computing)

In a computer's central processing unit (CPU), the accumulator is a register in which intermediate arithmetic logic unit 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 an 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 can operate as accumulators, and the term is no longer as common as it once was. However, to simplify their design, a number of special-purpose processors still use a single accumulator.

https://en.wikipedia.org/wiki/Accumulator (computing)