Figure above the realization of 4 bit adder-subtractor. From the figure it can be seen that, the bits of the binary numbers are given to full adder through the XOR gates. The control input is controls the addition or subtraction operation. When the SUBTRA

This is a tutorial I wrote for the "Digital Systems Design" course as an introduction to sequential design. "4-bit Serial Adder/Subtractor with Parallel Load" is a simple project which may help to understand use of variables in the &qu

Lab 3: Four-Bit Adder . Purpose. In this introductory lab, you will learn how to: Build a 4-bit adder circuit using the previously designed full adder and implement the design. Design a decoder for a 7-segment display as part of the 4-bit adder. Use buses