Full Adder Using Two Half Adders

The circuit is a Full Adder constructed from two Half Adders and an auxiliary two-input OR gate. Variables / Signal Names: CI = Carry Input AG = Augend AD = Addend SUMf = (Full adder) Sum COf = (Full adder) Carry Output For Half Adder: https://www.multisim.com/content/YZgqMmn73ceEynBkiRXUeS/half-adder/ For Configurable-Mode Full Subtractor/Adder Using Half Subtractor/Adder And Half Adder: https://www.multisim.com/content/7f3C4LtEzu8adz9gefm5yf/configurable-mode-full-subtractoradder-using-half-subtractoradder-and-half-adder/ For Simultaneous Dual Function Half Adder-Subtractor: https://www.multisim.com/content/MoUhGPsqRXjNsmYbzrMahn/simultaneous-dual-function-half-adder-subtractor/ For Ripple Adder: https://www.multisim.com/content/ucmGmBfuXe7JnCz592SHQ7/ripple-adder/