3D printing is the process of producing three dimensional solid objects from digital files. A 3D printed object is made using additive processes. This is done by laying down consecutive layers of material until the object is formed. Each layer is a horizontal cross-section of the object that is being...
Virtual reality is all about making a simulated set-up that immerses users into a virtual world, but how does VR work? VR simulates the vision, and this can be done by using a VR headset, which puts up a screen in front of the user’s eyes. This eliminates any interaction...
Wikipedia has over 5.5 million articles and approximately 600 new articles every day on the English version alone. It has 32.5 million active editors and 33 million registered users. The website was launched on January 15, 2001, and had 298 language versions. It has articles relating to a wide range...
Facebook is a social networking website that allows users to create profiles, keep in touch with family, colleagues, and friends, send messages as well as upload videos and photos. The site is free to use and available in 37 different languages. Facebook offers public features like Events, Groups, Marketplace, Presence...
Radio-frequency identification or RFID pertains to a technology where a reader captures digital data encoded in smart labels or RFID tags through radio waves. How does RFID work? RFID uses radio waves to identify objects and gather information about them. The information gathered is entered into computer systems with little...
Near Field Communication or NFC allows short-range communication between devices. Different devices that use the NFC standard will be considered active or passive. Active devices can send and receive information as well as communicate with one another. It can also communicate with passive devices. Some of the most common types...
A cryptocurrency is a virtual currency that can be used to exchange services and goods through electronic transactions without the presence of an intermediary. It is a decentralized form of currency, meaning it is not controlled by any financial institution, government or bank. Your privacy is also maintained when making...
Alexa is a digital assistant that you can command to control the gadgets in your home or answer your questions. It will talk to the gadgets in your home to do what you want or gather the data you need. The smart devices in your home should be Alexa compatible....
Bluetooth connects portable equipment such as mobile phones. Low-cost transceivers are embedded in the devices. Up to 8 devices can be connected at the same time, and each device provides a unique 48-bit address. The piconet or Bluetooth network is composed of a personal area network that contains 2 to...
GPS or Global Positioning System consists of approximately 30 satellites orbiting our planet at an elevation of 20,000 kilometers. The network of satellites was initially developed for military use, but anyone who owns GPS devices can now get the radio signal broadcasted by the satellites. Each GPS signal transmits data...
The internet has two main components – the hardware and the protocols. The hardware includes cables that carry data, radios, routers, satellites, servers, Smartphones, mobile phone towers, and other devices. These devices together form a network of networks. The internet is a flexible system. Although elements leave and join networks...
WiFi allows gadgets to communicate without wirelessly. The wireless networking protocol is a trademark of Wi-Fi Alliance and uses radio waves. What happens is that the wireless adapter of the computer translates data into a radio signal and delivers it to a wireless router using an antenna. The wireless router...