System Software

 System software is a type of computer program that is designed to run a computer’s hardware and application programs. If we think of the computer system as a layered model, the system software is the interface between the hardware and user applications. The operating system (OS) is the best-known example of system software. The OS manages all the other programs in a computer.

Besides the application software there is a another software called system software. System software is the operating system. This is very important for the working of the PC.
 Example – windows 98, windows 95, windows XP ,Solaris, Linux, Unix, Vista etc.
 When a user wants to store any data or program, the data or the program is stored at a location that is known only to the operating system. Therefore, the operating system performs the task of storage management.

Other examples of system software include:

• The BIOS (basic input/output system) gets the computer system started after you turn it on and manages the data flow between the operating system and attached devices such as the hard disk, video adapter, keyboard, mouse and printer.
• The boot program loads the operating system into the computer’s main memory or random access memory (RAM).
• An assembler takes basic computer instructions and converts them into a pattern of bits that the computer’s processor can use to perform its basic operations.
• A device driver controls a particular type of device that is attached to your computer, such as a keyboard or a mouse. The driver program converts the more general input/output instructions of the operating system to messages that the device type can understand.

Additionally, system software can also include system utilities, such as the disk defragmenterand System Restore, and development tools, such as compilers and debuggers.

System software and application programs are the two main types of computer software. Unlike system software, an application program (often just called an application or app) performs a particular function for the user. Examples include browsers, email clients, word processors and spreadsheets.