What is computer?
A computer program is a series of instructions that directs a
computer to perform tasks.
Created by a programmer
using a programming language.
Machine language is the first generation of
programming languages.
Only language the computer directly recognizes.
Assembly language is the second generation of
programming languages.
Programmer writes
instructions using symbolic instruction
codes.
A source program contains the code to be
converted to machine language.
In a procedural language, the programmer writes
instructions that tell the computer what to accomplish and how to do it.
The C programming language is used to write
many of today’s programs.
COBOL (COmmon Business-Oriented Language)
is designed for business applications, but easy to read because of the
English-like statements
An object-oriented programming (OOP) language allows programmers the
ability to reuse and modify existing objects. For example – java
The Microsoft .NET Framework allows almost any type of program to run on
the Internet or an internal business network, as well as computers and mobile
devices.
• C++ is an extension of the C programming
language
• C# is based on C++ and was developed by
Microsoft
• F# combines the benefits of an object-oriented
language with those of a functional language.
Visual Programming Language :-
In computing, a visual programming language (VPL) is any programming language that lets users create programs by manipulating program elements
graphically rather than by specifying them textually. A VPL allows programming with visual
expressions, spatial arrangements of text and graphic symbols, used either as
elements of syntax or secondary notation. For example, many VPLs (known as dataflow or diagrammatic
programming) are based on the idea of
"boxes and arrows", where boxes or other screen objects are treated
as entities, connected by arrows, lines or arcs which represent relations.
PowerBuilder is a powerful program development RAD tool.Best
suited for Web-based, .NET, and large-scale enterprise object-oriented
applications.
An application generator is a program that creates source code or
machine code from a specification of the required functionality.
A macro is a series of statements that instructs an application how to complete
a task. You
usually create the macro in one of two ways:
•
Record the macro with a macro recorder
•
Write the macro
HTML is
a special formatting language that programmers use to format documents for
display on the Web.
XHTML is
a markup language that allows Web sites to be displayed more easily on mobile
devices.
XML
allows Web developers to create customized tags and use predefined tags to
display content appropriately on various devices. Two applications of XML are RSS 2.0 and ATOM.
WML is
a subset of XML and is used to design pages for micro browsers.
Web 2.0 allows Web sites to provide a means for
users to :-
• Share personal information
• Have application software built into the site
• Allow user to modify Web site content
Web
page authoring software
can create sophisticated Web pages that include images, video, audio,
animation, and other effects. For example- Flash, Dream weaver, Expression web
To initiate program development, programmer
:-
• Reviews the requirements• Meets with the systems analyst and users• Identifies input, processing, and output
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