According to the U.S. Small Business Administration, small businesses represent 99.7 percent of all employer firms in the country. Small firms also account for forty-three percent of the technical workforce, and employ engineers, computer programmers, and scientists. About fifty-two percent of the small businesses are home-based. As per the US Census Bureau data for 2009, more than 119 million households in the US have computers, and 68.7 percent of them use the Internet. For most of the small business owners, use of computers and the Internet is essential to increase their productivity. From flower shops to bowling alleys, all small establishments have increasingly adopted information technology to smoothen their operations, save money, and increase their profitability. Firms use computers to manage their business through effective communication and efficient data management.

WHAT IS A COMPUTER VIRUS:

The term usually used to define a computer virus is:’ A computer virus is often malicious software which replicates itself’

- COMPUTER VIRUSES ARE BASICALLY PROGRAMS, LIKE A SPREADSHEET OR A WORD PROCESSOR.

- PROGRAMS WHICH CAN INSERT EXECUTABLE COPIES OF ITSELF INTO OTHER PROGRAMS.

- PROGRAMS THAT MANIPULATES PROGRAMS, MODIFIES OTHER PROGRAMS AND REPRODUCE ITSELF IN THE PROCESS.

Comparing Biological viruses & Computer viruses

 

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* Attack specific   * Attack specific

*  body cells           * programs (*.COM *.EXE)

We Provide a Complete range of service with computer products such as computer repair, laptop repair.[or other computer or parts goods. In general, Computer support services attempt to help the user solve specific problems with a product—rather than providing training, customization, or other support services.

Most computer offer technical support for the products .Computer support may be delivered over the Web site. Larger organizations frequently have internal technical support available to their staff for computer related problem. The internet is also a good source for freely available tech support, where experienced users may provide advice and assistance with problems. Data Recovery

Technology has changed day by day, especially computers evolvement brings humans lots of convenience. With the introduction of laptop, people now no longer have to accomodate computers with a substantial space of office. Even better now with the Netbook computer, you still can working with it whilst travelling.

 

With the use of a built in wireless network adaptor the Netbook Computer now makes it feasible to sit in most places in the world and connect to the internet thus making it easier to keep on top of your emails and work whilst also travelling around, be it on the tube, in an airport or even in the garden of your home you can easily be connected to the rest of the world.

Even before the first computer was conceptualized, data had already been stored on hard copy medium and used with a machine.  As early as 1801, the punched card was used as a control device for mechanical looms.  One and one-half centuries later, IBM joined punched cards to computers, encoding binary information as patterns of small rectangular holes.  Today, punch cards are rarely used with computers. Instead, they are used for a handful of train tickets and election ballots.  Although some may find it surprising, a computer printout is another type of hard copy medium.  Pictures, barcodes, and term papers are modern examples of data storage that can later be retrieved using optical technology.  Although it consumes physical space and requires proper care, non-acidic paper printouts can hold information for centuries.  If long-term storage is not of prime concern, magnetic medium can retain tremendous amounts of data and consume less space than a single piece of paper.   The magnetic technology used for computer data storage is the same technology used in the various forms of magnetic tape from audiocassette to videocassette recorders.  One of the first computer storage devices was the magnetic tape drive. Magnetic tape is a sequential data storage medium. To read data, a tape drive must wind through the spool of tape to the exact location of the desired information. To write, the tape drive encodes data sequentially on the tape. Because tape drives cannot randomly access or write data like disk drives, and are thus much slower, they have been replaced as the primary storage device with the hard drive.  The hard drive is composed of thin layers of rigid magnetic platters stacked on top of one another like records in a jukebox, and the heads that read and write data to the spinning platters resemble the arm of a record player.  Floppy disks are another common magnetic storage medium.  They offer relatively small storage capacity when compared to hard drives, but unlike hard drives, are portable.  Floppy disks are constructed of a flexible disk covered by a thin layer of iron oxide that stores data in the form of magnetic dots. A plastic casing protects the disk: soft for the 51/4-inch disk, and hard for the 31/2-inch disk.  Magnetic storage medium, for all its advantages, only has a life expectancy of twenty years.   Data can be stored on electronic medium, such as memory chips.  Every modern personal computer utilizes electronic circuits to hold data and instructions.  These devices are categorized as RAM (random access memory) or ROM (read-only memory), and are compact, reliable, and efficient.  RAM is volatile, and is primarily used for the temporary storage of programs that are running.  ROM is non-volatile, and usually holds the basic instruction sets a computer needs to operate.  Electronic medium is susceptible to static electricity damage and has a limited life expectancy, but in the modern personal computer, electronic hardware usually becomes obsolete before it fails.  Optical storage medium, on the other hand, will last indefinitely.   Optical storage is an increasingly popular method of storing data.  Optical disk drives use lasers to read and write to their medium. When writing to an optical disk, a laser creates pits on its surface to represent data. Areas not burned into pits by the laser are called lands. The laser reads back the data on the optical disk by scanning for pits and lands. There are three primary optical disk mediums available for storage: CD-ROM (compact disc read-only memory), WORM (write once read many), and rewritable optical disks. The CD-ROM is, by far, the most popular form of optical disk storage; however, CD-ROMs are read-only. At the factory, lasers are used to create a master CD-ROM, and a mold is made from the master and used to create copies. WORM drives are used almost exclusively for archival storage where it is important that the data cannot be changed or erased after it is written, for example, financial record storage.Rewritable optical disks are typically used for data backup and archiving massive amounts of data, such as image databases.   Although there are many manufacturers of the data storage devices used in the modern personal computer, each fits into one of four technological classes according to the material and methods it uses to record information.  Hardcopy medium existed before the invention of the computer, and magnetic medium is predominantly used today.  Electronic medium is used by every computer system, and is used to store instructions or temporarily hold data.  Finally, optical storage medium utilizes lasers to read and write information to a disk that lasts indefinitely.  Each type of medium is suitable for certain functions that computer users require. Although they use differing technologies, they all have equal importance in the modern personal computer system.