Information and Communication Technology

2.1.5 Arithmetic logic unit

This unit is used to perform all the arithmetic and logic operation s, such as addition, multiplication, comparison, and the like. For example, consider the addition of two numbers A and B. The control unit will select the number A from its location in the memory and load it into the arithmetic logic unit. Then it will sel ect the number B and add it to A in the arithmetic unit. The result will then be stored in the memory or retained in the arithmetic unit for further calculations.