Most of what can be experienced of the computer is the interface that connects the user to the hardware. This is actually the operating system that runs on the device, which is actually a software. Thus most of the work that is done on the computer is done with the help of the software. The software actually provides a basis or platform which is then used to make a layer of communication for the users with the underlying hardware. All the jobs that you do including databases, word processing, spreadsheets and even programming simulators and compilers are some kind of software that has been designed to be implemented on the top of hardware. Though most of the computer software is designed to do some dedicated work for the users, some like the operating system and utilities are used to act as a bridge and sustain the entire system setup.
To define the term, computer software is a set of data or computer instructions that have been designed to be a part of the computer system, which is unlike the physical components referred to as the hardware. The computer software is responsible for the processing of all data and information through the use of the CPU. The computer software would include computer programs and libraries. They would need to be used in conjunction with hardware and cannot be used on their own. The software would generally run on one core, but there are programs which can benefit from multiple cores.
Most of the PC software available today is written in a high-level language which is easier and more efficient for programmers to use as they would be closer than the machine languages to natural language. The high-level languages would be translated into machine language through the use of a compiler or interpreter which can then be understood by the computer system. The software can also be created in the assembly language, which is quite similar to the machine language of the computer and can be translated with the help of an assembler. Various software is being designed today by thousands of companies that offer uses in different sectors.
PC software can be divided into a few different types - system software including the operating system, device drivers and utilities, application software and malicious software. The system software directly operates the hardware. The operating system is the one which is responsible for creating an interface between the hardware and the user. The device drivers would help to control a particular device and the utilities are designed to assist the maintenance and care of the computers.
The application software provides various functions to the user like word processing or even entertainment. The malware or malicious software are basically designed to harm computers. All these software have one thing in common: they are totally dependent on the hardware to run.