An operating system (OS) can be considered to be a resource manager which manages all the resources of a computer, i.e., its hardware including CPU, RAM, Disk, Network and other input-output devices. It also controls various application software and device drivers, manages system security and handles access by different users. It is the most important system software.
Data can be defined as a representation of facts, concepts, or instructions in a formalized manner, which should be suitable for communication, interpretation, or processing by human or electronic machines.
we usually talk about the main or primary memory and secondary memory (also called storage device) is used to store data, instructions, and results permanently for future use.
Evolution of microprocessors has turned into the brain of millions of gadgets since the year 1971 i.e. devoid of processors these wonderful innovations of millions of gadgets would have not been possible. Now come have a look at the gadgets in which the CPU are playing an imperative role for more than 40 long years.
The history of computing began with an analog machine. In 1623 German scientist Wilhelm Schikard invented a machine that could add, and with the aid of logarithm tables, multiply and divide. Since then the development has pass through a lot of stages. Types of computers can be classified in many ways. Most of these words imply the size, expected use or capability of the computer.
A computer system primarily comprises a central processing unit (CPU), memory, input/output devices, and storage devices. All these components function together as a single unit to deliver the desired output. A computer system comes in various forms and sizes. It can vary from a high-end server to a personal desktop, laptop, tablet computer, or smartphone.