A computer is called a versatile machine because: of its ability to perform a wide range of tasks efficiently and effectively. It can process and store vast amounts of information, perform complex calculations, run various software applications, and connect with other devices and networks. In addition, computers are programmable, meaning that they can adapt, learn, and perform new functions with a simple update to their software. Overall, this versatility makes computers an essential tool for businesses, research, education, entertainment, and personal use.