Computer Software Application . The computer\'s versatility is built upon its: *Hardware: The physical part. *Software: The instructions that tells hardware how to transform the input data (information in a form it can read) into the necessary output. Monitor. CD-ROM drive DVD drive.
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*Hardware:The physical part.
*Software:The instructions that tells hardware how to transform the input data (information in a form it can read) into the necessary output.
Applications: Computers in Action
software tools that enable you to use a computer for specific purposes.
Microsoft Word, to create memos, letters, term papers, novels, textbooks, or Word Wide Web pageـــــ just about any kind of text-based document.
You can type and edit a word processing document using standard PC techniques and tools.
The process of producing a book, magazine, or other publication includes several steps:
With Desktop-Publishing (DTP) technology, the bulk of the production process can be accomplished with tools that are small, affordable, and easy to use.
Microsoft Excel is a spreadsheet program that lets you organize
your data into lists and then summarize, compare, and present your data graphically. For example,you can have Excel find the sum, average, or maximum value for sales on a given day; creat graph showing what percentage of sales were in particular range; and show how the total sales compared with the total sales of other days in the same week.
In short, Excel saves you from having to create these summaries by hand.
PowerPoint is a complete presentation graphics package. It gives you everything you need to produce a professional-looking presentation. PowerPoint offers word processing, outlining, drawing, graphing, and presentation management tools- all designed to be easy to use and learn.
PC Network Basics:
The internet is an elaborate network of interconnected networks ـــــa network that is dramatically change the way people work, play, and communicate.
A PC can be a window into the global system of interconnected networks known as the internet, or just the Net .
The Emergence of Networks
Local-Area Networks (LANs):
computers are physically close to each other, usually in the same building, so they could share resources, such as storage, printers.
Wide-Area Networks (WANs) extends over a long distance.
Some examples about Internet Explosion :
E-mail softwaremade it easy to send messages across the office or around the world
World Wide Web
Led the Internet’s transformation from a text-only environment into a multimedia landscape incorporating pictures, animation, sounds, and video
people connect to the web each day through Web browsers:
Programs that, in effect, serve as navigable windows into the Web
The branch of computer science concerned with making computers behave like humans.
Artificial intelligence includes
games playing:programming computers to play games such as chess and checkers
expert systems: programming computers to make decisions in real-life situations (for example, some expert systems help doctors diagnose diseases based on symptoms)
natural language: programming computers to understand natural human languages
neural networks:Systems that simulate intelligence by attempting to reproduce the types of physical connections that occur in animal brains
robotics: programming computers to see and hear and react to other sensory stimuli
A collection of programs that enables you to store, modify, and extract information from a database. There are many different types of DBMSs, ranging from small systems that run on personal computers to huge systems that run on mainframes. The following are examples of database applications:
database management system (DBMS).
This is a collection of programs that enables you to enter,
organize, and select data in a database.
(2) Increasingly, the term database is used as shorthand for
database management system.database :
1)Often abbreviated DB. A collection of information organized in such a way that a computerprogram can quickly select desired pieces of data. You can think of a database as an electronic filing system.
Graphics jargon can be confusing, especially for those who are just learning how to edit digital photographs or work with images for printing or Web pages.
There are countless graphics software packages available, each with its own options and even different names for the basic functions you can use to manipulate images (also called image enhancement).
To help you better grasp graphics software, we take a look at the genre and define some the common terminology to help you better maneuver your way through the basics of working with your digital images.
Artistic Effect: Neon Glow
Illumination Effects: Sunburst
Texture Effects: Tilessome the common terminology
2. Color DepthIn computer graphics, color depth is how you describe the range of colors that can be used in an image. The more colors used in an image, the more realistic it will look
3. EraserEraser tools allow you to erase areas within your image to leave behind transparency or a background color. There is also a Background Eraser which provides more control in removing a background to transparent
(Zoomed 200x185 crop) 256 colors (8 bit)
Original image (24-bit) showing zoom area
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