COMPUTER SOFTWARE
The computer system consist of hardware and software for its proper functioning. Software is the set of instructions or programs that governs the operations of the computer system. Software helps to make the hardware run. Software is the brain of the computer system. Without software, hardware is of no use. Software instructs the computer to perform the task. Software is that part of the computer system that we cannot touch.
SOFTWARE ARE CLASSIFIED INTO FOLLOWING CATEGORIES:-
1. SYSTEM SOFTWARE - System software controls the internal operation of the computer system. In system software, instructions are written in a machinery language or binary language. System software are used for starting the computer system and without them computer cannot work. It means entire working of computer depends on the system software.
System software are of two types:-
i)Operating system - Operating system is a program that acts as an interface between the user and the hardware. Operating system is one of the important component of the computer. Operating system is the first program that loads into the computer main memory. An operating system is an important part of every computer system.
Types of operating system are:-
•Single user operating system
•Multi user operating system
•Multiprocessing operating system
•Real time operating system
•Time sharing operating system
•Network operating system
ii)Language processor - Computer can only understand the machinery language or binary language but we use high level language. Human cannot understand the binary language. High level language is the english language,which user can easily understand. Thus, the programmers prefer to write their programs or code into high level language as it is easier to understand. These high level language are processed by an intermediate so that the computer can understand.
Types of language processor are-
•Assembler
•Interpreter
•Compiler
2. APPLICATION SOFTWARE - Application software are those software that are made for special purpose. They are design to help users to perform any certain task or work. Without the system software, application software cannot run. Operating system loads the application program or software in the computer memory.
Application software are of three types:-
i)Customized application software
ii)Packages
iii)Utilities
i)Customized application software - These are tailor - made software. Customized application software are depends on the users requirements. These are ordered by the users depends on their use. These are not installed on every computer because requirement of each user vary from the others. Customized application software is also called user written software.
ii)Packages - As we know that, it is not possible to design a software for each person. So, some common or general software are designed, referred as packages. Packages are also referred as general application software or ready - made software. These software perform some general or specialized task which can be used generally and can be installed by any users. As they fulfill the general requirements.
Types of packages are-
•Word processors
•Electronic spreadsheets
•Data base management system
•Accounting packages
•Desktop publishing packages
•Graphics packages
•Multimedia packages
•Presentation packages
iii)Utilities - Utilities are those programs that helps in the smooth working of the computer system. Utilities helps in backup of data, removing outdated data or unwanted files, recover the accidently deleted data, etc. Utilities are also referred as housekeeping functions. Utilities helps in the maintenance of the computer system. Thus, it increases the computer's potential.
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