# 40+ 4 Bit Alu Logic Diagram Images

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**40+ 4 Bit Alu Logic Diagram Images**. The multiplexer is used to pick the right output from all of those generated. Alu or arithmetic logical unit is a digital circuit to do arithmetic operations like addition, subtraction,division, multiplication and logical oparations like and, or, xor, nand, nor etc.

An arithmetic circuit is a logic circuit that performs basic arithmetic operations like addition, subtraction, increment, decrement and. The alu (arithmetic logic unit) is the part of a cpu that actually does calculations and condition testing. A simple block diagram of a 4 bit alu for operations and,or,xor and add is shown here

### Arithmetic and logic unit (alu) alu is responsible to perform the operation in the computer.

Depending on the value of the control lines, the output will be the addition, subtraction, bitwise and or bitwise or of the we are going to use four logic gates: Alu's comprise the combinational logic that implements logic operations such as and, or, not gate and arithmetic operations, such as adder, subtractor. For example, if you wish to add two binary the half adder has two inputs and two outputs as shown in the diagram below. My alu is working fine, i am finding it hard to do the decoder part.