Abbreviation of arithmetic logic unit, the part of a computer that performs all arithmetic computations, such as addition and multiplication, and all comparison operations. "Logical" operations - such as AND, OR and XOR is the fundamental ones, that all the others are derived from. However, the ALU functions on a computer "Word" being one or many bytes. It is given an instruction that can involve 0, 1 or 2 arguments. So the ALU is associated with the capability to access the memory - RAM and will wait until it "Memory Access Registers" are ready, will then execute the instruction. Another "ALU" will calculate the next instruction and request this. A third circuit will update the memory with any result from this operation.
The ALU is the main component of the CPU (central processing unit).-----------In a way, the ALU is where you have at least one argument: the last answer, and can make an operation to this: A + B -> C.
The operation "+" can be arithmetic, like addition or it is logical like AND or to compare two numbers.
The ALU is made up by "gates" that takes one bit at a time.
The Arithmetic Logic Unit (ALU) inside the Central Processing Unit (CPU) of the computer.Most modern computers however do not have a single general purpose ALU that handles everything, but instead have several independently functioning special purpose ALUs optimized for specific data types (e.g. integer numbers: I-ALU, floating point numbers: FP-ALU, boolean logical values: LU).
ALUShort for Arithmetic Logic Unit, ALU is one of the many components within a computer processor. The ALU performs mathematical, logical, and decision operations in a computer and is the final processing performed by the processor. After the information has been processed by the ALU, it is sent to the computer memory.In some computer processors, the ALU is divided into two distinct parts, the AU and the LU. The AU performs the arithmetic operations and the LU performs the logical operations.
It doesn't. Usually, the CPU general purpose registers provide input to the ALU, and the Accumulator receives the answer temporarily until it can be placed back into one of those registers. Exactly how this is wired up varies widely with different CPU architectures, but in the theoretical model of an ALU, you specify which function you want, and the answer appears at the output as fast as the gates can operate. It is up to the CPU to store it somewhere.
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