How do you make ALU with multiplexer?

How do you make ALU with multiplexer?

ALU’s are constructed by creating each of the functions separately, and then using a multiplexor to select the desired output. The Function input is used for the input address lines of the mux. This ALU can be constructed using a 74153 4-input mux, a 7483 4-bit adder, and and or gates.

What is Isarithmetic logic unit?

In computing, an arithmetic logic unit (ALU) is a combinational digital circuit that performs arithmetic and bitwise operations on integer binary numbers. This is in contrast to a floating-point unit (FPU), which operates on floating point numbers.

What is an example of arithmetic logic unit?

An ALU performs basic arithmetic and logic operations. Examples of arithmetic operations are addition, subtraction, multiplication, and division. Examples of logic operations are comparisons of values such as NOT, AND, and OR. Operations can be accomplished by connecting multiple transistors.

How do you make an arithmetic logic unit?

Building the ALU

1. Step 1: Add the Two Input Pins.
2. Step 2: Add the Adder/Subtractor and Gates.
3. Step 3: Add the Multiplexers.
4. Step 4: Add Controls.
5. Step 5: Add a Splitter.
6. Step 6: Add Another OR Gate And a NOT Gate.
7. Step 7: Add a Result Pin for the MUX.
8. Step 8: Add Negative, Carry, and Overflow Pins.

How many units do we have in ALU?

In some processors, the ALU is divided into two units: an arithmetic unit (AU) and a logic unit (LU). Some processors contain more than one AU — for example, one for fixed-point operations and another for floating-point operations.

Why multiplexer is used in ALU?

The output of the ALU is equal to the logic output (on the red wire). For addition, the upper multiplexer part will generate the “majority” function of the 3 inputs, giving the new carry at its output.

What is ALU function?

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 CU and ALU?

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.

What is the function of CU?

The control unit of the central processing unit regulates and integrates the operations of the computer. It selects and retrieves instructions from the main memory in proper sequence and interprets them so as to activate the other functional elements of the system at the appropriate moment…

What is CU and ALU?

Difference Between ALU and CU is that arithmetic logic unit is another component of the processor which performs arithmetic, comparison, and other operations. While control unit is the component of the processor that directs and coordinates most of the operations in the computer.