![]() (look ground of 74hc244 IC is individually selected in all three operations). The selection process is manual in this project, but you can use a decoder IC to select automatically after pressing a button to try it yourself. So, I am assuming you have read that project, In this project, I have used IC packages directly to add the number, and an XOR gate is used to make it subtractor and a AND gates IC for ANDing In the previous section of making a calculator project, I have explained the basic concept of Adder you can visit there by this link. In this project, I have made this device just for adding, subtracting, and ANDing to show you the basic concept behind the ALU unit. ALU is a combination of a digital circuit that does the arithmetic operation (like Adding two numbers, subtracting, multiplying, and division and logic operations (like AND, OR, NOR, NOT, XOR, etc ) ![]()
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March 2023
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