Explanation:

(I) An indifference curve, with respect to two commodities, is a graph SHOWING those combinations of the two commodities that leave the consumer equally well off or equally satisfied—hence indifferent—in having any combination on the curve.

Indifference curves are heuristic devices used in contemporary microeconomics to demonstrate consumer preference and the limitations of a budget. Economists have adopted the principles of indifference curves in the study of welfare economics.

Standard indifference curve analysis operates on a simple two-dimensional graph. Each axis represents one type of ECONOMIC good. Along the indifference curve, the consumer is indifferent between any of the combinations of goods represented by points on the curve because the combination of goods on an indifference curve PROVIDE the same level of utility to the consumer.

(2) Arithmetic Logic UNIT (ALU) performs all the task of al and arithmetic operations..ALU stands for Arithmetic and Logical Unit which performs Arithmetic FUNCTIONS like Addition, subtraction, division, etc.

CU stands for control unit which performs the task of controlling functions of the computer. It monitors and gives proper instructions to all parts of the computer.