WHAT IS A COMPUTER? Hardware & Software

• In this blog we will discuss about ,"What is computer and differences among its part as Hardware & Software".
• We know that all information are scattered in google but I want to make it easy for our readers.Otherwise it is difficult to know which information is right and which is wrong .
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WHAT IS A COMPUTER?

What is Computer : Computer is an electronic device that is designed to work with Information. The term computer is derived from the Latin term ‘compute’, this means to calculate or programmable machine. 

Therefore computers can perform complex and repetitive procedures quickly, precisely and reliably. Modern computers are electronic and digital. All general-purpose computers require the following hardware components:

§  Central processing unit (CPU): The heart of the computer, this is the component that actually executes instructions organized in programs ("software") which tell the computer what to do.

§  Memory (fast, expensive, short-term memory): Enables a computer to store, at least temporarily, data, programs, and intermediate results.

§  Mass storage device (slower, cheaper, long-term memory): Allows a computer to permanently retain large amounts of data and programs between jobs. Common mass storage devices include disk drives and tape drives.

§  Input device: Usually a keyboard and mouse, the input device is the conduit through which data and instructions enter a computer.

§  Output device: A display screen, printer, or other device that lets you see what the computer has accomplished.

Computer has many definitions to express.

A computer is a programmable device that can store, retrieve, and process data. The term "computer" was originally given to humans (human computers) who performed numerical calculations using mechanical calculators, such as the abacus and slide rule. 

A computer is made up of multiple parts and components that facilitate user functionality. A computer has two primary categories:

1. Hardware                                                           

2.Software

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What is Hardware ?

Hardware is an encompassing term that refers to all the physical parts of the  computer. The internal hardware devices that make up the computer and ensure that it is functional are called components, while external hardware devices that are not essential to a computer’s functions are called peripherals.

In simple language hardware are those device that you can touch or see . i.e Wire , mouse, keyboard ,drives 

What is Software ?

Software, in its most general sense, is a set of instructions or programs instructing a computer to do specific tasks.  or 

In a simple words Software is a set of instructions given by an user to a computer and it convert it into a specific tasks. We cann't touch or feel it .

The theory of software was first proposed by Alan Turing in 1935 in his essay "Computable numbers with an application to the Entscheidungsproblem."

Software are further define into three parts:

1.System Software 
2.Application Software
3.Programming Software 

Explanation

System software serves as a base for application software. System software includes device drivers, operating systems (OSs), compilers, disk formatter, text editors and utilities helping the computer to operate more efficiently. It is also responsible for managing hardware components and providing basic non-task-specific functions. 

Programming software is a set of tools to aid developers in writing programs. The various tools available are compilers, linkers, debuggers, interpreters and text editors.

Application software is intended to perform certain tasks. Examples of application software include office suites, gaming applications, database systems and educational software. Application software can be a single program or a collection of small programs. This type of software is what consumers most typically think of as "software."