☛ EQU is the equate assmbler directive used to define a constant without occupying a memory location.

☛ It associates a constant value with data label .

☛ Whenever the label appears in the program ,constant value is subsituted for label.

☛ Advantage: The constant value occuring at various positions in a program can be changed at once using this directive.

☛ Syntax: label EQU constant value