Operating System

An operating system (OS) is software, consisting of programs and data, that runs on computers and manages computer hardware resources and provides common services for efficient execution of various application software.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between application programs and the computer hardware, although the application code is usually executed directly by the hardware and will frequently call the OS or be interrupted by it. Operating systems are found on almost any device that contains a computer—from cellular phones and video game consoles to supercomputers and web servers.

Examples of popular modern operating systems for personal computers are (in alphabetical order): GNU/Linux, Mac OS X, Microsoft Windows and Unix.

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Posted in: Aplication Program,Computer,Operating System,Software

Defenition of Computer

Literally, the term "computer" is derived from "compute" meaning calculate. Perhaps, in follows initial objective of creating computer, namely hoe create an adding a=machine capable to do many calculations accurately. However, during its development, this machine changes to be multipurpose machine, not only for calculating only. Computer has developed to be versatile machine that may change functions based on necessities. Sometimes, it is used as typewriter, calculator, drawing creator, song and film player, etc.

Computer means a series a group electronic machines consiting of thousands even millions of components able to cooperate and to form an order and thorough work system. This system can then be used to carry out a series of tasks automatically based on order of instructions or programs made for it. A group electronic machines means hardware of computer. Hardware can defined as physical sets equipment since it is visible, touchable, and movable. Solely relying on hardware will run the computer. Computer requires a program installed into to. This program can be in form of a operations from the computer itself or a procedure in case of processing data as previosly provided. These program are called software of a computer.

Principally, computer is only an intrument. It can be used to assist human being in finishing tasks. For working, the instrument requires program and human. Definition of human being is then knows as brain ware (human instrument). Defenition of brain ware may include people directly working by using computeras auxiliary tools and people working indirectly by using computer but receiving of computer in form of report.

Concept of hardware-software-brain ware is trinity concept inseparable one another. Firtly, human must install program to computer will star working for assisting human being solve problem and finish duties.

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Posted in: Aplication Program,Brain Ware,Computer,Hardware,Software

Basic Operation of Computer

Computer is not strange anymore in this era. You can find it in houses, schools, and offices easily. Moreover, computer has become basic need for several people. 

From time to time, communication holds vital role for human life. May be, we can make it equal to basic needs like food, clothes, or home. As we know, human being is a social creature requiring other for survival. For interaction with others, human needs tools, instrument, or method of communication. Thus, anything related to communication is very significant for human life.

One of the most sifnificant equipment in communication development is computer. This device can be directly used as communication and exchanging information tools or may support other communication tools. We can send letters or make direct conversation using computer connected to networks or internet. Computer is also used for procesing data and information. Thus, it is a must for us to be capable in operating computer, both as information processor and communication tool (information exchange itself). 

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Posted in: Aplication Program,Brain Ware,Computer,Hardware,Software