Another 9 Tech Fun Facts

1. How do capacitive touch works?

They work with anything that holds an electrical charge – including human skin. (Yes, we are comprised of atoms with positive and negative charges!) Capacitive touch screens are constructed from materials like copper or indium tin oxide that store electrical charges in an electrostatic grid of tiny wires, each smaller than a human hair.

There are two main types of capacitive touch screens – surface and projective. Surface capacitive uses sensors at the corners and a thin evenly distributed film across the surface (as pictured above) whereas projective capacitive uses a grid of rows and columns with a separate chip for sensing, explained. In both instances, when a finger hits the screen a tiny electrical charge is transferred to the finger to complete the circuit, creating a voltage drop on that point of the screen. (This is why capacitive screens don’t work when you wear gloves; cloth does not conduct electricity, unless it is fitted with conductive thread.) The software processes the location of this voltage drop and orders the ensuing action.

2. What is Gi-Fi?

Gi-Fi or gigabit wireless refers to a wireless communication at a data rate of more than one billion bits (gigabit) per second. By 2004 some trade press used the term “Gi-Fi” to refer to faster versions of the IEEE 802.11 standards marketed under the trademark Wi-Fi.  Some press reports called this “GiFi”. This leads to the development of a new technology called Gi-Fi.

The Gi-Fi technology has faster information rate, low cost for short range transmission and consumes less power. Gi-Fi is developed on an integrated wireless transceiver chip.

3. What are the types of SIM?

There are basically 3 types of SIMs:

Non-programable – cannot be programmed and must be replaced with a new SIM if changing SIM info.

Programable – integrated into the phone, can be reprogrammed, i.e., does not have to be replaced if changing info (also referred to as embedded).

Soft SIM – an application, not a separate piece of hardware, in the phone, it can be programmed. Soft SIMs are not really deployed yet, because of security concerns.

4. What is an OLED screen?

An organic light-emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current. An OLED display can be driven with a passive-matrix (PMOLED) or active-matrix (AMOLED) control scheme.

5. What is MAC address?

A media access control address (MAC address) of a computer is a unique identifier assigned to network interfaces for communications at the data link layer of a network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and Wi-Fi.

A MAC address is given to a network adapter when it is manufactured. It is hardwired or hard-coded onto your computer’s network interface card (NIC) and is unique to it. Something called the ARP (Address Resolution Protocol) translates an IP address into a MAC address.

6. What is Liquid Crystal Display Made of?

Like their passive matrix brethren, active matrix displays are sandwiches consisting of several layers: a polarizing film; a sodium barrier film (SiO 2 ), a glass substrate incorporating a black matrix, and a second sodium barrier film; a colour filter and a colour filter overcoat made of acrylic/urethane; a transparent.

7. What is cached data in Mobile phones?

The main reason why cached data exists is to make loading time faster. So, if the device already has the layout of the website saved in the form of cached data, it will not have to load that same data once again. This helps in quickening the process of loading the website.

8. What is Linux?

Linux is a Unix-like operating system (a series of programs that let you interact with your computer and run other programs) assembled under the model of free and open-source software development and distribution. Linux is designed to be a multi-tasking, multi-user system. Ubuntu, Mint, Arch, Debian, Fedora, Red-hat, Kali, OpenSuse, etc are few of the popular Linux distributions.

9. What is Biometrics?

Biometrics are automated methods of recognizing a person based on a physiological or behavioural characteristic. Among the features measured are the face, fingerprints, hand geometry, handwriting, iris, retinal, vein, and voice. Biometric data are separate and distinct from personal information.

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