"ADD A, B" is a basic instruction used in programming and computer science to perform addition. In this context, A and B represent numerical values or variables. When this command is executed, the values of A and B are summed together, and the result is typically stored in a designated location or variable. This operation is fundamental in various applications, from simple calculators to complex algorithms. Understanding "ADD A, B" is essential for anyone learning programming, as it lays the groundwork for more advanced mathematical operations and logical processes in coding.