In this video we introduced Half Adders and Full Adders indigital logic design. Eng. Ahmed Helwa explained the difference between combinational and sequential circuits, then focuses on how adders are used to perform binary addition. He walks through truth tables, Karnaugh maps, and logic gate implementations for both half and full adders, showing how they are designed and represented in circuit diagrams. The session emphasizes the role of (XOR) and (AND) gates in half adders, and how full adders extend functionality by including a carry input.