Any programs that we use in computer like windows xp, Vista, ms-office, and Photoshop are software. Those softwares are further divided into 3 groups
a.Application Software: It is a group of programs designed to solve particular problems. Example; word processing, spreadsheet, multimedia and presentation database etc.
b. System Software: It is a set of programs which helps user to communicate with hardware e-g Operating system. Assembler, Compiler, Interpreter etc.
c. Utility Software: It provides services for developing and and debugging computer programs. E.g. Norton utility, PC Tools etc.