Software fundamentally is
the unique image or representation of physical or
material alignment that constitutes configuration to or
functional identity of a machine, usually a computer. As
a content of memory, software in principle can be
changed without the adjustment to the static paradigm of
the hardware thus without the remanufacturing thereof.
Commonly software is of an algorithmic form which
translates into being to a sequence of machine
instructions. Some software, however, is of a relational
form which translates into being the map of a
realization network (see VHDL).
Software is the programs that enable a computer to
perform a specific task, as opposed to the physical
components of the system (hardware). This includes
application software such as a word processor, which
enables a user to perform a task, and system software
such as an operating system, which enables other
software to run properly, by interfacing with hardware
and with other software.
The term "software" was first used in this
sense by John W. Tukey in 1957. In computer science and
software engineering, computer software is all computer
programs. The concept of reading different sequences of
instructions into the memory of a device to control
computations was invented by Charles Babbage as part of
his difference engine. The theory that is the basis for
most modern software was first proposed by Alan Turing
in his 1935 essay Computable numbers with an application
to the Entscheidungsproblem
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