Which part of the computer is used for calculating and comparing ?

Which part of the computer is used for calculating and comparing ?

کمپیوٹر کا کون سا حصہ حساب اور موازنہ کے لیے استعمال ہوتا ہے؟
Explanation

An arithmetic-logic unit (ALU) is the part of a computer processor (CPU) that carries out arithmetic and logic operations on the operands in computer instruction words.