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Archive of posts published in the category: Techopedia
Apr
6

What is a Computer? – Definition from Techopedia

The earliest digital electronic device that could be defined as the first modern computer is the Colossus. Built in 1943-44, the Colossus was devised to crack the Lorenz SZ 40/42, a German encryption machine used to support military communications during World War II.

The device used 2,400 vacuum tubes to perform multiple boolean logical operations to decode encrypted data.

Modern computers come in all shapes and sizes to perform a broad range of different functions. Although the first ones that come to mind are desktop and laptop computers, many other less-assuming devices — such as grocery scanners, ATMs, and smart TVs — are computers as well.

The diffusion of smartphones, game consoles, wearables, and smart appliances made computers much more readily available in our daily life.

A computer is made up of multiple parts and components that facilitate user functionality.

A computer has two primary categories:

Hardware

Physical structure that

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Mar
30

What is Software? – Definition from Techopedia

The theory of software was first proposed by Alan Turing in 1935 in his essay “Computable numbers with an application to the Entscheidungsproblem.” However, the word software was coined by mathematician and statistician John Tukey in a 1958 issue of American Mathematical Monthly in which he discussed electronic calculators’ programs.

Software is often divided into three categories:

  • System software serves as a base for application software. System software includes device drivers, operating systems (OSs), compilers, disk formatters, 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. The system software is usually written in C programming language.
  • 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
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