Differentiate between CU and ALU

Answer 1

The ALU (Arithmetic-Logic Unit) is generally a subsection of the CPU (Central Processing Unit). While the CPU is the master driver of a computer, the ALU is a processing area optimized to handle mathematical computations and logic comparisons. The processor controller passes operation codes and operands to the ALU, which performs the requested operation on the supplied data and passes back the results.

Answer 2

ALU - Arithmetic Logic Unit

FPU - Floating-Point Unit

What this means basically is that the ALU handles integer operations only, and floating-point operations (where the decimal point and fractions of integers are significant) are generally ONLY performed on the FPU (though there are some twisted tricks to get around this).

Answer 3

ALU- Arithmetic Logic Unit

CU- Control Unit

ALU performs the arithmetic and logic operations.

CU is the one which controls the entire processing. It directs the flow of data between the Central Processing Unit (CPU) and the other devices - eg ALU.

Answer 4

ALU is part of the CPU.

ALU does the arithmetic or logic upon the bytes presented to it.

The CPU fetches an instruction from RAM, decodes it, sends the desired byte(s) to the ALU, and also tells it which operation to perform on them.

Answer 5

ALU which basically used for arithmetic operation (like addition, subtraction etc ) in microprocessor and control unit (to control some operation) used to choose an operation in ALU ( is this is addition, subtraction or other arithmetic operation).