Microsoft Windows was announced by Bill Gates on November 10, 1983. Microsoft introduced Windows as a graphical user interface for MS-DOS , which had been introduced a couple of years earlier. In the 1990s, the product line evolved from an operating environment into a fully complete, modern operating system over two lines of development, each with their own separate codebase. The first versions of Windows (1.0 through to 3.11) were graphical shells that run from MS-DOS; later on, Windows 95 , though still being based on MS-DOS, was its own operating system, using a 16-bit DOS-based kernel and a 32-bit user space . Windows 95 introduced many features that have been part of the product ever since, including the Start menu , the taskbar , and Windows Explorer (renamed File Explorer in Windows 8). In 1997, Microsoft released Internet Explorer 4 wh...
A computer is a machine or device that performs processes , calculations and operations based on instructions provided by a software or hardware program. It is designed to execute applications and provides a variety of solutions by combining integrated hardware and software components. A computer is made up of multiple parts and components that facilitate user functionality. A computer has two primary categories: Hardware : Physical structure that houses a computer's processor, memory, storage, communication ports and peripheral devices Software : Includes operating system (OS) and software applications A computer works with software programs that are sent to its underlying hardware architecture for reading, interpretation and execution. Computers are classified according to computing power, capacity, size, mobility and other factors, as personal computers (PC), desktop computers, laptop computers, minicomputers, handheld computers and devices, mainframes or sup...