Shruti Speak's

What is a NETWORK? A set of devices (commonly known as nodes) which is connected by a communication link is known as a network. A node is generally a device (such as computer, printer etc.) which can send and receive data generated by other nodes on the network. A network must be able to meet certain important characteristics such as performance, reliability and security .   Need For Networking To share computer files: Networks provide a very effective way to share files with different users. Like in order to share a common file with different departments of an organization, we can place the file on the network so that it can be used by all the departments. To share computer peripheral: Network enables us to share certain computer devices with one another which may be very costly/expensive. E.g.-Laser printer etc. To enable communication: Networks allow unlike computers to communication with each other. A computer with different operating syste

Growth Of Computer Networks Due to the explosive growth of computer networks, computer communication has become an essential part of our infrastructure. Nowadays the concept of networking in followed in every aspect of business which includes advertising, production, planning etc. Many corporations have multiple networks; schools as well as many colleges also make use of computer networks to provide students and teachers with instantaneous access to information. Networking  can also be stated as the practice of linking two or more computing devices together in order to communicate and share data. Usually networks are built with a mix of computer hardware and computer software. The growth of networking has an economic impact as well as an entire industry has emerged that develops networking technologies, products and services. Computer networking has also produced a strong demand in jobs for people with networking expertise due to the growing popularity

MICROWAVE :- These  are a form of electromagnetic radiation with wavelengths ranging from as long as one meter to as short as one millimeter, which is equal to the frequencies between 300 MHz (0.3 GHz) and 300 GHz. This definition includes both UHF and EHF both are millimeter waves, and various sources use different boundaries. In every case, microwave includes the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum, with RF engineering often putting the lower boundary at 1 GHz (30 cm), and the upper around 100 GHz (3 mm).The prefix "micro-" in "microwave" is not meant to suggest a wavelength in the micrometer range. It indicates that microwaves are "small" compared to waves used in typical radio broadcasting, in that they have shorter wavelengths. The boundaries between far infrared light, terahertz radiation, microwaves, and ultra-high-frequency radio waves are arbitrary and are used variously between different fields of study.                     

INFRARED (IR) :- This  light is electromagnetic radiations with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometer (nm) to 1 mm. Wavelengths of these ra ys corresponds to a frequency range of approximately 430 THZ down to 300 GHz, and includes most of the thermal radiation emitted by objects near room temperature. Infrared light is emitted or absorbed by molecules when they change their rational-vibrations movements. It was first discovered in 1800 by astronomer William Herschel. Slightly more than half of the energy from the Sun arrives on Earth in the form of infrared radiation. The balance between absorbed and emitted infrared radiation has a critical effect on Earth's climate. History of Infrared:- The discovery of this radiation is ascribed to William Herschel, the astronomer, in the early 19th century. He published his results in 1800 before the Royal Society of London. He used a prism to refract li

WIRELESS COMMUNICATION Introduction:- Wireless communication  is the communication between two or more points that are not connected by an electrical conductor. It permits services, such as long-range communications, that are impossible or impractical to implement with the use of wires The common wireless technologies use electromagnetic wireless telecommunications, such as radio. With radio waves distances can be short, such as a few meters for television or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including  cellular telephones ,personal digital assistants (PDAs), and wireless networking . Other examples include GPS units, garage door openers, wireless computer mice, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones .Less common methods of achieving wireless communications include the us

1.  netflixroulette.net   Find something random to watch on Netflix. 2.  pintsinthesun.co.uk   Find somewhere to drink a pint in the sun. 3.  gfycat.com   Upload your gifs. 4.  youconvertit.com   Convert documents. 5.  ninite.com   Download all the free software you want at the same time. 6.  squirt.io   Speed read the web one word at a time. 7.  shouldiremoveit.com   Find out which applications you should remove from your computer. 8.  avoidhumans.com   Find places to go in public that are not crowded. 9.  keybr.com   Practice your touch typing. 10.  oldversion.com   Get old versions of software. 11.  readability-score.com   Find out how readable text is. 12.  deadmansswitch.net   Have emails sent when you die. 13.  mint.com   Budget your money. 14.  roadtrippers.com Plan your route with the best lodging and attractions. 15.  duckduckgo.com   A search engine that is not following you. 16.  padmapper.com Maps out possible apartments/homes that fit y

Assignment topic                                             Roll No.         Topic IMCA/4501/12 Java script tutorial in DOM IMCA/4502/12 Java script Tutorial in HTML IMCA/4503/12 Create a Blog IMCA/4504/12 Create a Blog IMCA/4505/12 Online Advertisement IMCA/4506/12 Create Apps IMCA/4507/12 Create Apps IMCA/4509/12 Create a website IMCA/4511/12 XML Tutorial IMCA/4512/12 Create Apps IMCA/4513/12 Create a Website IMCA/4514/12 Create a Blog IMCA/4515/12 Create a Website