Single User Operating System can run only one program at a time and hence called single user or single task systems. These systems run on microcomputers Only one user is normally in command of the system at any given time. Examples of such type of operating system are DOS-Disk Operating System and Macintosh systems.
Everyone has several abilities but without the contribution of mind and thinking, body does not really become one. We can say that mind and emotions are the operating system that turns one's physical components into a complete person. In the same way components operating system tells the various parts of the computer that they are present and working in collaboration to form a computer.
Computer programs which direct a computer system to perform specific information processing activities required for the solution of business, scientific and other problems of computer users. Application Software are also known as packages that help the user to get his required output. These are the software developed by experts in high/low level languages for non-experts.
System software are programs which hold instructions related with the working of the hardware and software of the computer system. System Software behaves like an incharge and performs the responsibility of overall supervision of input, processing and output of data. In other words, it is a set of programs the purpose of which is to increase, the capabilities of the system and thus, make the use of computer more effective.
in order to communicate with computer user also needs to have a language, that should be understandable by the computers. For the purpose different languages are developed for performing different types of work on the computer. Mainly there are two types of computer languages Low Level Computer Languages and High Level Compuer Langauges
Central Processing Unit CPU is considered the brain of computer system. It is sometimes referred to processor or microprocessor. It has the responsibility to supervise the entire computer operations. This central processor execute the instructions made by users but also control primary and secondary storage of data and control functions of all attached devices.
Since 2013, Tianhe-2 is consecutively the most powerful computer in the world on top500 list of the world’s most powerful supercomputers Titan - Cray XK7 was launched on October 29, 2012 by Cray Inc. and added to top500 list in November, 2012
We are surrounded by computer world. It is impossible to live without all these computer gadgets like computers, laptops, mobile phones whether at home, office or while traveling. When a common man thinks of it, it is personal computer i.e. desktop or laptop. However, computer have different shapes and sizes and perform different functions.