Printer

Internet

You have all the basic parts of your computer set up and want to start surfing the internet. You might even see an internet explorer icon on your desktop. You may be wondering if getting online is as simple as clicking that icon. Well, yes and no. There are basically three things you need to use your computer to become active online-an Internet Service (ISP), a modem, and an internet browser. Before you can connect to the internet, you have some decisions to make about these three topics
Dial up access
DSL access
CABLE access
Satellite access

What Is Led Printer?

LED (light emitting diode) printers capable of printing at the same close to the same quality as most laser printers. LED printers work much like laser printers but utilize a led panel that recreates the image on a negatively charged drum. The areas where the light hits the drum become less charged, which attracts toner. The printer then transfers the loner from the drum to the paper and applies intense heat to fuse the toner to the paper. 

What is Adware ?

The ads in the form of pop-Ups download automatically result of which the browing turns slow down.

What is Spyware ?

Spyware is a type of software which download in computer without our knowledge to track some information like password, credit card number etc.

What is spams ?

Spams are the unwanted e-mail messages, which are sent in bulk sometime they are not harmful, but some times they used for theft the information form the PC, when the system attached with the internet.

What is Boot virus ?

These virus infect the master boot Record.These are activate during the time of booting of computer.

Preventation from virus:
Some antivirus programs I.e macfee, Norton, Microsoft Security Essentials are available to recognize the virus and helpful to prevent system from virus attacks.

What is Computer Malware's ?

Unknown and unwanted digital attacks which are causing problem in computer,known as virus.The virus is nothing but a malacious program or software which enter in the system which enter in the system without knowledge of user and Create damages in the form of corrupt some of them described hereunder as :
1.Virus
2.Spams
3.Adware
4.Spyware
5.Worms
6. Trojan Horse
7.Logic Bomb

Important Abbreviations For Computer

ASCII : American standard code for Information Interchange
B2B: Business to Business
B2C :Business to consumer
BASIC :Beginner's All purpose Symbolic Instruction Code

What is Utility Software?

It help to analyze, configure, optimize and maintain the computer.Several types of Utility software categorized  hereunder as :

What is System software ?

System software is computer software designed to operate the computer hardware and to provide a platform for running application software.The most basic types of system software are

Operating system
It controls the memory needed for computer processes, manages disk space, controls peripheral devices, and allows you to communicates with the computer without knowing exactly how a computer is useless, window window 98, window XP, Widow Vista, Window7, Linux, Unix, are the examples of operating system.

Types of Computers

Computer are divided in following types in term of size
Microcomputers ( Personal computers )
The term microcomputer was introduced with the advent of single chip microprocessors. The various microcomputers are ;-
Desktop computers
Desktop computer is small in size and can put on the desk top that is why it known as destop. It is used in office, school, home, etc. Destop computer minimums have a moniter, keyboard, mouse, and a cpu.
Laptop computers
The primary benefil of a loptop computer is its small size and easy portability. A laptop computer can put om lap, that's the reason, it know as laptop. The keyboard, mouse,monitor and cpu all are bundled together in single machine. The notebook, palmtop computers are also come in the series of laptop.
Minicomputers
A mini computer is the computer which is referred to as the mid sized computers and they serve as the same functions as the normal destop computers. Minicomputers that are somewhere in between a microcomputer and a microcomputer.
Mainframe computers
The term mainframe computer was created to distinguish the traditional, large, institutional computer intended to service multiple users from the smaller,single, user machines.

What is central processing unit ?

The central processing unit (CPU),also called a processor is located inside the computer case on the motherboard. It is often called the brain of the computer, or the computer, or the computer's engine. Its job is to carry out commands, whenever you press a key, click the mouse, or start an application, you re sending instructions to the cpu. The cpu is generally a 2 inch ceramic square with a silicon chip located inside sized about the thumbnail. The processor determines how fast a computer can execute instructions. A processor's speed is measured in megahertz (MHZ) or gigahertz (GHZ).

What is Thermal Printer ?

What is Thermal printer?
A thermal impact printer or electrothermal printer is a printer that uses heated pins to "burn" images onto heat-sensitive paper.these printer are commonly used on calculators and  fax machines and althouth they are inexpensive and print relatively fast they produce low resolution print jobs.
A thermal printer,thermal transfer printer , or thermal wax transfer printer is a high quality printer that commonly utilizes a thermal wax ribbon that melts a colored wax onto the paper creating near photo realistic images.

What is Laser Printer ?

What is Laser Printer ?
A laser printer is a printer that utilizes laser technology to print images on the paper.laser printer are  often used in school, offices,home etc that require print jobs to be completed quickly and in large quantities. The printing cost of laser print is economy than other printers.

What is Laser Printer ?

What is Laser Printer ?
A laser printer is a printer that utilizes laser technology to print images on the paper.laser printer are  often used in school, offices,home etc that require print jobs to be completed quickly and in large quantities. The printing cost of laser print is economy than other printers.

What is Inkjet Printer ?

It prints by spraying stream of quick - drying ink on paper. The ink is stored in disposable ink cartridges, often a separate cartridge is used for each of the manjor color. These colors are usually black ,red, magenta, green, cyan, and yellow (cymk). Although inkjet printers themselves are often relatively inexpensive, the ink cartridges used in the printer can quickly increase the overall cost of the printer.

What is DOT matrix printer ?

The term DOT matrix refers to the process of placing dots to form an image the quality of the image being determined by the dots per inch.
Dot matrix printer use print heads to shoot ink or strike an ink ribbon to place hundreds to thousands of little dots to form text or images. Now-a-days, dot matrix printer are not commonly used due to the low quality print outs.

What is Barcode Reader ?

What is Barcode reader?

It also know as a point of sale (POS) scanner is a hardware device.it is capable to read barcode (lines of different widths and sizes and printing out the details of the product that product into a database.the super market (Reliance fresh,National Handloom,More etc.) is a perfect example of a barcode reader to read price of a product.

What is the keyboard ?

Keyboard is the main input devices used on a computer. The keyboard looks very similar to the keyboards of electric typewriters or typing machine with some additional keys ex. function keys (F1 to F12 ) control key, alter key,multimedia keys etc.