What is the purpose of an ALU?

What is the purpose of an ALU?

function in digital computer The ALU performs simple addition, subtraction, multiplication, division, and logic operations, such as OR and AND. The memory stores the program’s instructions and data.

What is the function of ALU and registers?

A register is a small amount of storage available as part of a CPU. The control unit tells the ALU what operation to perform on that data, and the ALU stores the result in an output register. The control unit moves the data between these registers, the ALU, and memory.

Which register is affected by ALU directly?

The W register is a fundamental component of the ALU as it is used in most arithmetic or logic instructions. The W register, shown as an output of the ALU, also forms a feedback loop, as an input into the ALU.

Which two important tasks is the CPU responsible for?

A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program.

What is the function of ALU Class 9?

ALU performs arithmetic operations such as addition, subtraction, multiplication, division, and logical operations.

What functions are performed by the ALU is it an independent unit?

Answer: ALU is stands for arithmetic and logical unit which perform all arithmetic operation like addition subtraction division and multiplication and logical operation of the computer system. ALU is an independent unit because it performs the function independently.

What is ALUSrc for the ADD instruction?

RegWrite: enables writing of destination register. ALUSrc: selects second input of ALU. 0: Read data 2 from register file.

What are the advantages of using three bus datapath in computer architecture over one or two bus architecture?

The main advantages of multiple bus organizations over the single bus are as given below. Increase in size of the registers. Reduction in the number of cycles for execution. Increases the speed of execution or we can say faster execution.

How do you write ALU results to a register?

If the instruction is an arithmetic-logical instruction, the result from the ALU must be written to a register. If the operation is a load or store, the ALU result is used as an address to either store a value from the registers or load a value from memory into the registers.

How does the ALU work?

One operand for the ALU is always contained in a register. The other operand may be in a register or may be part of the machine instruction itself. The result of the operation is put into a general purpose register. Machine instructions that use the ALU specify four things:

What is an operand in an ALU?

is called an operand. One operand for the ALU is always contained in a register. The other operand may be in a register or may be part of the machine instruction itself. The result of the operation is put into a

What does ALU stand for in computer architecture?

Registers and the ALU. The arithmetic/logic unit (ALU) of a processor performs integer arithmetic and logical operations.