A set of instrument or programs which controls the operation of a computer is

The set of instruments or programs that control the operation of a computer is called "software". Software includes all the programs and data used by a computer system to perform various tasks. It consists of two main types, namely system software and application software. System software is responsible for controlling and managing the computer hardware and providing basic functions such as operating system, device drivers, utilities, and system libraries. Application software, on the other hand, is designed for specific tasks and includes programs such as word processors, spreadsheets, graphics software, and database management systems.