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Dca Notes Pdf

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DCA के नोट्स और सैंपल पेपर · PGDCA के नोट्स · DOEACC CCC · ओ लेवल के नोट्स · इनफार्मेशन असिस्टेंट के लिए नोट्स. Copyright. DCA- Basic Fundamental, My computer, Desktop, History of computer by the computer system as a sequence of notes with the associated. Practical on C Programming and Application Program. DCA ए लीकेशन ो . Printing presentation – Print slides, notes, handouts and outlines. •. Inserting Web Link. (smeltitherabpigs.cf

Working with Columns. Importing and exporting to and from various formats.. MicroSoft Office. Introduction to MS Word. Open-Office etc. Working with MS Word. Adding References and Graphics. Text Editing using various features. Symbols etc. Text Attributes. Working with -Styles. Presentation graphics. Auto texts. MS Word Basics: Introduction to MS Office.

Display VGA Monitor or above x resolution and colors is required. Z dks fd. HDD MB of available harddisk space or above 4. Microsoft Word:. Head Phone etc. Z ljyrk ls de le. Z dks ljyrk ls fd. N Hardwar o e 1. Z dj ldrs gSaA. XLM Doucment. Save as:. Print Priview:. Number of copies. Find Whole word only. Paste special:. Select all:. Ruler ckj dks. MS Word dh lHkh Vwyckj dks. Column Break.

Break type:. Section Break Types: Bulleted Tab:. Line Style Tab: Z dks: Title Case:. Sentence Case:. Tool Menu bl ehuw esa. Document ds left and right alignment dks lgh fn[kkus ds fy. Step 1: Mail Merge:. Z dks djrs gSA esy etZ ls le. Step 5: Vsfcy esa jks. Windows Menu:. Using Wizards. Using different features with Data.. Use of Formulas. Z ljyrk ls fd. Using different features with Data and Text.

Splitting etc. Column Freezing. Z dj ldrs gSA. Cell and Texts. Various Data Types. Working with Different Chart Types. Z dks vklkuh ls dj ldrs gSA blesa. BB10 vkfnA. Introduction and area of use. Different Views of Worksheets. YQkcsV gksrs gSA. Z Hkh fd.

DCA PC Package All Units.pdf

Page Setup:. Print Area:. Dlsy lhV esa gsMj. Formula bar excel dh. MS Excel dh lHkh Vwyckj dks. Insert Menu bl ehuw dh lgk. Financial 5. Date 3. Statically 7. Math or String 2. Lookup or reference Funtion dk iz. Logical 6. Text 4.

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Z vius vki dqN gh lsdsM esa gks tkrk gSA. Z dks Standard Tool bar dh lgk. Windows Menu: Sounds and Movies to a Slide. Working with MS PowerPoint.

Working with PowerPoint Objects. Dr fd. V MS PowerPoint: Creating a New Presentation. Working with Presentation. Printing Presentations. Configuration and using Outlook Express for accessing e-mails inoffice. Deleting and Copying of Slides. Working with Notes. Handouts with print options.

Outlook Express: Features and uses. Adding Graphics. Create a New Presentation u. PPT gksrk gSA 8. Z gksrs gSA 1.

LykbZM dks. Presentation cukus ds ckn mldh lHkh LykbZMl dks 'kks djus ds fy. Although there may be differences in the location of some keys or features, keyboards are very similar and allow you to accomplish basically the same tasks. Mouse Mouse is a pointing device. It lets you point to objects on the screen, click on them, and move them. However, you can also download a wireless mouse, which works using Bluetooth. What did they look like? Were they all-in-one, or did they have a separate tower?

Are there any keys that you haven't used before? Although they belong to the fifth generation they can be divided into different categories depending upon the size, efficiency, memory and number of users. Broadly they can be divided it to the following categories. Microcomputer is at the lowest end of the computer range in terms of speed and storage capacity. The microcomputers are built of 8-bit, bit and bit chips microprocessor chips. Microcomputers are computers that have a microprocessor as a CPU and are often personal computers.

Mini Computer: A computer of medium power, more than a microcomputer but less than a mainframe. It supports more than one user at a time as 4 to users simultaneously. The mini computer is used in multi-user system in which various users can work at the same time.

It possesses large storage capacity and operates at a higher speed. A large digital computer serving or sometimes thousands of users and occupying a special air-conditioned room.

In some ways, mainframes are more powerful than supercomputers because they support more simultaneous programs. But supercomputers can execute a single program faster than a mainframe. Mainframes use proprietary operating systems, most of which are based on Unix, and a growing number on Linux. Mainframes are so called because the earliest ones were housed in large metal frames.

The fastest type of computer. Supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations.

For example, weather forecasting requires a supercomputer. One of the ways in which supercomputers are built is by interconnecting hundreds of microprocessors other uses of supercomputers include animated graphics, fluid dynamic calculations, nuclear energy research, and petroleum exploration.

Ex- Mouse, Keyboard, Motherboard etc. It is what guides the hardware and tells it how to accomplish each task. Some examples of software are web browsers, games, and word processors such as Microsoft Word. Ex- Microsoft Word, Operating systems A computer uses basically 4 types of software: System Software: System software co-ordinate between Users, applications software and Hardware storage devices i.

Communication, Printers, Readers, Displays, Keyboard of computer. Application Software: Helps user in doing computer related one or more works. Ex- Tally etc 3. Programming Software: This is used to program new software. It provides tools for computer programs and software write for programmer. These devices are called peripherals.

Below are a few examples of peripherals. A printer is used to print documents, photos, or anything else that appears on your screen. There are many types of printers available, including inkjet, laser, and photo printers.

You can also download an all-in-one printer, scanner, and copier. A scanner allows you to copy an image or document and save it to your computer as a digital computer-readable image. Speakers and headphones are output devices. It means that they are devices that communicate information from the computer to the user.

They allow you to hear sound and music. Depending on the model, they may connect to the audio port or the USB port. Some monitors also have built-in speakers. A microphone is a type of input device, or a device that receives information from a user. You can connect the microphone to the computer and use the computer to record sound or to communicate with another computer user over the internet. Many computers come with built-in microphones. A web camera, or webcam, is a type of input device that can record videos or take pictures.

It can also transmit video over the internet in real time, allowing you to do video chat or video conferencing with somebody in a different part of the world. Webcams are used often in business, and they also help many friends and families stay connected. A joystick is a lever that is used to control computer games. There are various other types of controllers that you can use, and you can also use your mouse and keyboard to control most games. A digital camera lets you capture a picture or video in digital form.

By connecting the camera to your computer's USB port, you can transfer the images from the camera to the computer. You can then print the images, email them to a friend, or post them on the web. When you download an electronic device such as a mobile phone or mp3 player, check to see if it comes with a USB cable.

If it does, that means you can connect it to your computer. With many devices, you can synchronize or sync them with your computer, which automatically keeps your contacts, music, and other data up-to-date whenever you connect the device to your computer. Also the paper discusses in detail the legacy form of input and output devices used to the latest devices that has revolutionized the way an end user interacts with the computer as well.

There are different types of input devices like: Keyboard A flat board with grids of buttons which are programmed to input characters into the computer. Keyboards can be classified into different categories based on their layout, connection type, form factor etc. A standard keyboard includes about keys, each of which sends a different signal to the CPU. Wireless keyboards use wireless technologies to communicate.

Most commonly used technologies are: Infrared, Radio frequencies and Bluetooth Touch screen Touch screens are touch sensitive displays which can detect location of touches within the touch sensitive display.

There are three basic systems that are used to recognize a person's touch: Like a scanner, it consists of a light source, a lens and a photo conductor translating optical impulses into electrical ones. The decoder analyzes the barcode image data and transmits to the CPU. Each barcode has specific symbols defined as a series of bars in a barcode. The way to differentiate the barcode is by the height and width as well as the bar spacing.

Each strip of bar c an represent a number, character or alphanumeric character depending on which type of barcode symbol set is used. Barcodes are printed on nearly every product. The barcode contains the product details such as product name, size, manufacturer and the country of origin.

The price is looked up from the shop's database. OMR Optical Mark Reader systems are suited to reading pre-printed forms and checkboxes such as multiple choice exam papers.

The OMR captures data by contrasting reflectivity at predetermined positions on a page. Magnetic strip Reader Magnetic strips are built into many plastic cards such as check guarantee cards, cashpoint cards and personal identity cards. The magnetic strip on the back of the card can hold the personal details of the card owner and, with the necessary PIN, will allow access to secure information e.

Data stored on the strip is scanned and input into a computer system by a magnetic stripe reader. A MIDI musical keyboard can be attached to a computer and allow a performer to play music that is captured by the computer system as a sequence of notes with the associated timing instead of recording digitized sound waves.

Finger printer reader Fingerprint scanners are very common now-a-days. Most of the laptop computers are equipped with a finger print scanner which provides highest level of security from unauthorized use. Video Conferencing Video conferencing is a facility of video chat between two people using internet.

For video chat all participants must have some basic equipments like- Video camera, video conferencing software, microphone, speaker etc.

There are three broad categories of printer: Dot matrix printer, Inkjet printer, Laser printer etc. Dot matrix printer: In dot matrix printer the print head with umpteen numbers of pins runs on page and prints by impact, striking an inked cloth ribbon against the paper, much like a typewriter.

This is done by several tiny pins, aligned in a column, striking an ink ribbon positioned between the pins and the paper, creating dots on the paper. Example- Printers at Railway booking counter Inkjet printer: An inkjet printer is any printer that places extremely small droplets of ink onto paper to create an image. Ink cartridges - Depending on the manufacturer and model of the printer, ink cartridges come in various combinations, such as separate black and color cartridges, color and black in a single cartridge or even a cartridge for each ink color.

The cartridges of some inkjet printers include the print head itself.

Laser Printer: Laser printers are commonly used in offices for bulk printing. Because faster in terms of output and cost per page is cheap. These are best for Black printing. They have in built memory also. It can store incoming data stream in printer memory and process for printing. Many heavy-duty printers are network capable. Networked PCs can print directly from these printers without requiring the printer to be connected to any PC.

These printers can also send, receive fax and make photocopies. Some printers also have Scanner, Fax and copier functions inbuilt. These are known as MFD or multi-functional devices also as per there working capability. A 3D printer is a device that allows physical output of the digital material that has been drawn on the computer.

This is the latest printing technology. Research is going on 3D printer technology. Projector A projector takes a video signal from computer video output and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image.

Video projectors are widely used for conference room presentations, classroom training, and home theatre applications Surface Computing The system is composed of a horizontal touch screen under a coffee table-like surface, with cameras mounted below to detect the user interaction.

All interface components such as dialogs, mouse pointer, and windows, are replaced with circles and rectangles outlining "objects" that are manipulated via drag and drop.

Global Positioning System satellites transmit signals to equipment on the ground. GPS receivers passively receive satellite signals; they do not transmit. GPS receivers require an unobstructed view of the sky, so they are used only outdoors and they often do not perform well within forested areas or near tall buildings.

GPS operations depend on a very accurate time reference, which is provided by atomic clocks at the U. Naval Observatory.

Each GPS satellite has atomic clocks on board. Eyeglass Eyeglass monitor projects a high resolution color video image that appears in the person's line of sight in a viewing angle comparable to a 72 inch monitor from 10 feet away. Optical techniques are used to present the image in distance focus. Most of the eyeglass and head-mounted displays can receive inputs from various sources.

These displays are used for various purposes such as entertainment, medical, surveillance etc There are two types storage devices used in computers; a primary storage device such as computer RAM and a secondary storage device such as a computer hard drive. The secondary storage could be a removable, internal, or external storage.

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Ex- Pen drive, Floppy Disk etc. When saving anything on the computer, you will be asked for the storage location, which is where you want to save the information. By default most of the information you save will be saved to your computer hard drive, however, if you want to move the information to another computer you would want to save it to a removable storage device such as a Jump drive.

Without a storage device, you and your computer would not be able to save any settings or information and would be considered a dumb terminal. Below, are some additional examples of storage devices that are used with a computer. Keep in mind that although these drives do send and receive information, they are not considered an input or output device. Floppy disk runs through Floppy Disk drive. Today, because of the limited capacity and reliability of floppy diskettes many computers no longer come equipped with floppy disk drives and are being replaced with CD-R, other writable discs, and flash drives.

Compact Disc Known by its abbreviation, CD, a compact disc is a polycarbonate with one or more metal layers capable of storing digital information. The most prevalent types of compact discs are those used by the music industry to store digital recordings and CD-ROMs used to store computer data.

Both of these types of compact disc are read-only, which means that once the data has been recorded onto them, they can only be read, or played. CD-Rs are a low cost solution for backing up software. Each CD-R often only costs a few bucks around Rs. Although these are still a very popular solution for backing up data, more users are turning to USB thumb drives to backup and transfer their data.

There are many different competing standards for creating DVD discs. Hard drive Alternatively referred to as a hard disk drive and abbreviated as HD or HDD, the hard drive is the computer's main storage media device that permanently stores all data on the computer.

As per user convenient it can partitioned i. Disc D , Disc E etc. The hard drive was first introduced on September 13, and consists of one or more hard drive platters inside of air sealed casing.

Tape A magnetically thin coated piece, plastic wrapped around wheels capable of storing data.

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Tape is much less expensive than other storage mediums but commonly a much slower solution that is commonly used for backup. Today, tape has mostly been abandoned for faster and more reliable solutions like disc drives, hard drives, and flash drives.

Mkokyk d. Mkokyk ek. This is very easy to use and gives you access to each and every feature of your computer with total control and comfort. XP here refers to Extreme Programming. The operating system before XP was Windows First released to computer manufacturers on August 24, , it is the second most popular version of Windows, based on installed user base.

It was succeeded by Windows Vista in January On April 10, , Microsoft reaffirmed that extended support for Windows XP and Office would end on April 8, and suggested that administrators begin preparing to migrate to a newer OS. Components of Windows XP: My Computer: My Computer was initially released with Windows 95 and continued with all windows versions after that. My Computer allows the user to explore the contents of their computer drives as well as manage their computer files.

My Computer icon, this icon is almost always located on the top-left portion of the desktop and should look similar to the icon shown in right. Open My Computer: My Computer houses all drives Local disc. Any document you've created music file, picture, or other personal file it's likely that it's contained in your documents folder. This folder is displayed in My computer as a folder and usually contains your name.

As stated earlier, My computer icon can be used for getting configuration of a computer also. What kind of processor CPU you have? There are mainly three ways to find the configuration of your computer: You can find out the configuration of a computer by clicking on the System icon in the Control Panel 2.

This is what you will get to see when you type this command there and click on OK. My Document: My Documents is a Microsoft Windows folder that stores documents, program settings, and other files that are used with many of the programs run on your computer. For example, when saving a file in Microsoft Word the default folder will often be My Documents. You can locate the My Document folder on left top of desktop. But if you are unable to locate you can access the file and folders of the same as following: Recycle Bin: Whenever we delete any of them they transferred to Recycle bin.

You can retrieve the documents by double clicking on the document and then pressing Restore. The document will then automatically send to the location from where it was deleted. My Network places: Here you can see all network connections.

You can also access them by double click. Background of computer screen is called desktop. Start Button: It is found on left-below side of desktop. It contains list of all programs and files to reach and use.

Vertical line housing some options and buttons is known as Taskbar. It locates in right most of taskbar. It is used for watch time. While a small battery is fixed in computer to run the clock. Date of computer is also managed by here and can be seen by pointing cursor on them. Window is a rectangular frame having title on top and contains of the specific program. Whenever we open any program it opens in its own window only.

Some basic terms related to windows: It is used to reduce or enlarge the size of a window. It is found on top right of the window Minimize: It is used to minimize the screen to the task bar. Closing window: Closing buttton is used to close any running program. Shut down window: To shut down your computer having windows use any of the followings: Restart Window: Make sure that all files and folders are closed before restarting it. Log off: Log off is the action to close or switch any user id in computer.

By pressing F1 you can access help screen from any window for getting related help. This option is used to search any file, folder, song, picture etc in computer. To access search screen press: Practical Session: Say your instructor to teach you full use of the Search option.

Write it down in your notebook. Align to Grid: Folder is just like a box, that contains different types of files, folders, document etc at single place. It helps you to keep similar documents at a single place. This is called Screen Saver. In Windows we can set and change the screen saver very easily. Important terms in right side screen: Here you can select any screen saver of your choice that is already saved in windows. To see a preview of selected Screen saver Wait: Set the time in minute to wait for start the screen saver after you stop working on computer.

Select time as screen saver: By clicking on the options given here you can add or remove them from taskbar for direct access. Lock the Taskbar: By clicking and removing tick from this option, taskbar can be made free for movement on the desktop. You can then increase the size of taskbar as well as position it on the top or left or right of the desktop.

Taskbar Properties: Auto-Hide the Taskbar: After using this, taskbar hide automatically from desktop and appears when cursor is positioned to the below of screen. Keep the taskbar on top of other windows: If we use the option, taskbar will appear after maximize any screen also. If set to no, the taskbar will disappear after maximizing the screen.

Group Similar taskbar buttons: Use it to group all similar open windows on taskbar. Show Quick Launch: Quick launch are tabs found after Start button on taskbar. These are used to quick access of any program. You can add any icon here by dragging them from desktop between them. Show the Clock: To Keep or remove clock from Taskbar. Use it to change the basic view of start button.

It contains all basic folders of Windows and programs installed afterin. You can use and access any of them by clicking onthem. In left side you can see list of recently and mostly used programs while some basic program folders like- My Document, My Recent Document, My picture, Control panel can be seen in Right Side. At the below left side of the start you can see a tab named All program. Here you will get list of the programs. Additional options can be provided by third party software.

Control Panel is implemented as a special folder, i.

Classic View and Category View Here you will be taught about main tabs of the control panel only. But you can ask your instructor about other. Your instructor will show you practical use of all the tabs detailed below. But you may be restricted to repeat or do practical of them. For any mistake or loss by using these you will be sole responsible Add or Remove Program: Under this tab you can view all external programs installed with your computer.

By clicking on any specific program software you can uninstall them from your computer. You can add or remove any font from your computer using this tab. Here you get a list of all fonts installed with computer. User Accounts: Use it to create a user in computer. You can create, alter and delete your User account here.

Create a new user account: Definition Computer Virus: A set of computer instructions 2. Deliberately knowingly created 3. And does unwanted things. Characteristics of Computer Viruses: Cannot exist in a viable form, apart from another usual program.

Propagates when the host program is executed. Has an incubation neutral period, during which no damage is done.

After incubation period, begins to manifest its behavior. A Few Manifestations of Computer Viruses: Sudden or periodic slowing of programs. Unexplained change in the size of any program. Unusual behavior of the computer, especially during a program which you have been running regularly with no problems. Failure of any program such as a word processor to install correctly from its distribution original disks. Many programs check their own size after installation.

Programs which are NOT viruses: Trojan horse: User error: A few kinds of virus-caused behavior: Formats hard drive, destroying all data "Dark Avenger" virus. Causes random change in typed characters "Teatime" virus.

Presents a political or false advertising message every few times "Stoned" virus: Legalize Marijuana. Causes computer to act as though a monitor or disk drive is going bad "Jerusalem-B" virus. Trading, copying or pirating software on diskettes without knowing the source. Software salesmen giving demos on your computer from their diskettes. Computer repair personnel using diagnostic disks.

Computer user groups and bulletin boards BBS's. Antivirus Antivirus are computer programs that attempt to identify, neutralize or eliminate malicious software.

Antivirus is so named because the earliest examples were designed exclusively to combat computer viruses; however most modern antivirus software is now designed to combat a wide range of threats, including worms, phishing attacks, rootkits, trojan horses and other malware. Antivirus scans files or your computer's memory for certain patterns that may indicate an infection. The patterns it looks for are based on the signatures, or definitions, of known viruses.

Virus authors are continually releasing new and updated viruses, so it is important that you have the latest definitions installed on your computer. Before you install antivirus software, check to make sure you don't already have an antivirus product on your computer. If you do, be sure to remove the product you don't want before you install the new one. It can cause problems on your computer to have two different antivirus products installed at the same time.Motion Paths:.

Computer Fundamentals DCA 1st Sem

Most of the laptop computers are equipped with a finger print scanner which provides highest level of security from unauthorized use. Line Style Tab: Z dks vklkuh ls dj ldrs gSA blesa. Scurtu Gelu-Constantin.