Hafeez Helmi

Visual Basic

2009-03-31T21:55:00.003+08:00

Visual Basic (VB) is the software third-generation event-driven programming language and integrated development environment (IDE) from Microsoft for its COM programming model. VB is considered a relatively easy to learn and use programming language, because of its graphical development and BASIC heritage.

Visual Basic was derived from BASIC and enables the rapid application development (RAD) of graphical user interface (GUI) application, access to databases using Data Access Objects, Remote Data bjects, or ActiveX Data Objects, and creation ActiveX controls and objects. Scripting languages such as VBA and VBScript are syntactically similar to Visual Basic, but perform differently.

A programmer can put together and application using the components provided with Visual Basic itself. Program written in Visual Basic can also use the Windows API, but doing so requires external function declarations.

The final release was version 6 in 1998. Microsoft's extended support ended in March 2008 and the desinated successor was Visual Basic.NET (a.k.a Visual Basic)

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Microsoft QuickBASIC

2009-03-30T22:34:00.002+08:00

Microsoft QuickBASIC is an Integrated Development Environment (IDE) and compiler for the BASIC programming language that was developed by Microsoft. QuickBASIC runs mainly on DOS, though there was a shirt-lived version for Mac OS. It is loosely based on GW-BASIC but adds user-defined types, improved programming structures, better graphics and disk support and a compiler in addition to the interpreter. Microsoft marketed QuickBASIC as the introductory level for their BASIC Professional Development System.

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Softwares Application

2009-03-30T21:22:00.000+08:00

Typical examples of software applications are word processors, spredsheets and media players.

1) Word processing typically refers to text manipulaton functions such as automatic generation of:

batch mailings using a form letter template and an address database ( also called mail merging)
indices of keywords and their page numbers
tables of contents with section titles and their page numbers
cross-referencing with section or page numbers
footnote numbering

2) A spreadshets is a computer application that simulates a paper worksheet. It displays multiple cells that together make up a grid consisting of rows and columns, each cell containing either alphanumeric text or numeric values. A spreadsheet cell may alternatively contain a formula that defines how the contents of that cell is to be calculated from the contents of any other cell (or combination of cells) each time any is updated. Spreadsheets are frequently used for financial information because of their ability to re-calculate the entire shhet automatically after a change to a single cell is made.

3) Media player is a term typically used to describe computer softwares for playing back multimedia files. Most software media players support ana array of media formats, including both audio and video files.

Some media players focus only on audio or video and are known as audio players and video players respectively. The producers of these players usually focus on providing a better user experience as they are specifically tailored the media type.

Description of....

2009-03-30T19:44:00.003+08:00

Operating system

a programs that control the hardware directly
they a way for applications software to communicate with hardware
they manage the transfer of data to and from various peripherals

User interface

The user interface the aggregate of means by which people-the user-interact with the system-a particular machine, device, computer program or other complex tool. The user interface provide means of

Input; allowing the users to manipulate a system
Output; allowing the system to indicate the effects of the users' manipulation

Translator

Translators convert written materials from one language into another. In computing; this is the software the converts the whole of a program written in a high-level language into machine code in one go. For example, if a program needs to be altered at a later date, the original source code is altered and the program recompiled.

Utility software

Utility software is computer software designed to help manage and tine the computer hardware, operating software or application software by performing a single task or a small range of tasks. Utility software has long been integrated into most major operating systems. These are some example of utility software and it's functions:

Disk storage utilities; e.g disk defragmenters, backup, disk compression and file managers
System profilers provide detailed information about the software installed and hardware attached to the computer
Data compression utilities output a shorter steam or a smaller file when provided with a steam or file.

Programming language

A programming language isa machine -readable artificial language designed to express computations that cn be perfomed by a machine, particularly a computer. Programming languages can be used t create programs that specify the behavior of a machine, to express algorithms precisely, or as a mode of human communication.

Many programming languages have some form of written specification of their syntax and semantics, since computers require precisely designed instructions. Some are defined by a specification document, while others have a dominant implementation.

The purpose of.....

2009-03-30T19:25:00.002+08:00

Input devices:

to make selections from the menus or to choose icons
to the cursor on the screen
to produce graphics
to move images and create windows on the screen

Storage devices:

A computer usually contain several kind of storage, each with and individual purposes. Adigital computer represents data using the binary numeral system. A piece of information can be handled by any computer whose storage space is large enough to accommodate the binary representation of the piece of information, or simply data. For example, using eight million bits, or about one megabyte, a typical computer could store a small novel.

Output devices:

An output device is used to communicate the results of data processing carried out by an informtion processing system (such as a computer) to the outside world.

2009-03-25T20:05:00.002+08:00

Hardware
• It is the term used for the parts of the computer that you can touch and handle.
• It is the collective name given to all the devices that make up a computer system. These would include the visual display unit, processor, printer, modem, etc.

Software;
• It is the word used for the actual programs that allow the hardware to do a useful job. Without software, the hardware is useless.
• It is made up of a series of instructions that tell the computer what to do.

Input device;
• Input devices are used to get data into a system.
• These are some of example of input devices:
o Keyboard - the oldest and most familiar of all input devices
o Mouse – an input device that translates its movements on the desktop into digital information
o Tracker ball – it is like an upside down mouse
o Touch sensitive pad – this pads are commonly found on notebook computers. By moving a stylus across the pad, the cursor on the screen will also move (like mouse)

Storage device;

A storage device is a device for recording(storing) information(data)
The example of storage device is pen drive, hard-disk drive, CD-ROM, DVD, etc.

Output device;
• It is a peripheral that represents output from the computer.
• These are some example of output devices:
-Monitors or Visual Display Units (VDUs) – a devices similar to a television that receives video signals from the computer and displays the information for the user
-Printers - the device that produce hardcopy during printing

testing....

2009-03-12T10:42:00.002+08:00

testing....

2009-03-12T10:42:00.001+08:00

testing....

2009-03-12T10:42:00.000+08:00