Skip to main content

Do you know that?

Our Life is so busy that we often don't have time to look at smaller things that are actually quite questionable but interesting. We are here today to have a look at some of those things :) Here we go!!!


Wi-fi Symbol Secret:

We all use WiFi, actually it has become a Basic Need. But, have you ever imagine why does your Wi-fi symbols looks like that? No? We'll tell you.

First of why is it called so? The word WiFi is used as a synonym to WLAN, the newtork configuration that it uses. WiFi was introduced by WiFi Alliance, the term WiFi was commercially used in August '99 it was coined by brand-consulting firm Interbrand Corporation. The Wi-Fi Alliance had hired Interbrand to determine a name that was "a little catchier than 'IEEE 802.11b Direct Sequence'

Now, why is the symbol so? The answer is quite simple. When first WiFi was found, the technology used was based on Radar or Radio Waves that transmit from a single point to many. Thus, if we closely observe the symbol, we would see that it has s Single dot with waves coming out of it, depicting the principle it works on.

Bluetooth Symbol: Why so?

Interesting thing, guess why bluetooth is called so?It is derived from the congomen of a 10th century king named, Harald Bluetooth king of Denmark and Norway. He was famous for unification of nations and Bluetooth was first invented in Erricson lab, where the after the invention of this they were confused to name it and found out about this Viking king , Harald and named after the king. One more interesting thing, is about the bluetooth symbol. It may sound fascinating, but the Bluetooth symbol is actually the initials of Harald Bluetooth in Scandinavian Runes :) ;) ( Reference: Previous post)

 USB symbol : A complex secret

We all use USBs for all our daily routine work, from transferring files to movies, USB helps us a lot in this.
Now, take the USB in your hand and closely see it, what do you see? A circle, a Triangle and a Square, what do they mean? They actually depict the different components that the bus (Universal Serial Bus) will connect. Also you'll see there is only one line on USB, that means it is a Serial Connection communication that USB uses. Actually, history says the USB logo was modeled to resemble the Dreizack ( Neptune's Trident). :) Interesting isn't it?


What does your charger has at the end?

Ever observed your charger? Of course not, who would? We would.
If you see it keenly there is a cylindrical part at the end of some chargers, what is it?
Some say it's a capacitor, but actually it is not. They are the Ferrite Beads or say Small EMI filters.
Now, you would say why would we need filters in a simple charger? The answers lies in the working of signal transmission through cables. Every device that transport energy, gives off or picks up energy from different sources, so when your charger provides the supply to your laptop, the socket power is way enough sufficient to pick up or give out radio waves of particular frequency that results in White or Random noise effecting the power supply efficiency.   

Does it cost my pocket, when The device is on Stand-by?

We are all lazy, who has time to get up and switch off the TV switch? rather we just turn the TV off by using the remote, this may seem as a act of laziness but actually it burns a lot of calories to your pocket.
Yes, you read it right, even when the devices are on stand-by they cost you some watts and as a result act as Silent contributors to your Electricity bill. 

A research table shown below shows how much it hurts you.


ApplianceWhen on (watts)Standby (watts)
Stereo2212
TV10010
Video recorder131
DVD recorder127
Digital top box65
Computer + peripherals13015
Computer monitor7011
Laptop computer292
Broadband modem1414
Answering machine33
Battery charger141
Mobile phone charger52
Total41883





So, whenever you need to put off your TV,mobile charger or AC, get up and switch off the Main switch, that would also burn some calories as well as it'll make your wallet more fit. ;)




Comments

Popular posts from this blog

VLSI viva compilation

All the below stuff is a compiled post from google of all the viva questions asked on vlsi and avlsi , do take a look  I've actually made this for me :P ( Last minute Reading Stuff :) ;) ) 1. Why does the present VLSI circuits use MOSFETs instead of BJTs? Compared to BJTs, MOSFETs can be made very small as they occupy very small silicon area on IC chip and are relatively simple in terms of manufacturing. Moreover digital and memory ICs can be implemented with circuits that use only MOSFETs i.e. no resistors, diodes, etc. 2. What are the various regions of operation of MOSFET? How are those regions used? MOSFET has three regions of operation: the cut-off region, the triode region, and the saturation region. The cut-off region and the triode region are used to operate as switch. The saturation region is used to operate as amplifier. 3. What is threshold voltage? The value of voltage between Gate and Source i.e. V GS at which a sufficient number of mobile e...

Pylove

For the PyLovers , here we bring more coding examples. Written and tested by us, today we have 5 of the codes from basic to moderate that would help you get more attract towards #Python. Here are some codes that we have been practicing. Hope you try them too!!! Don't just copy+paste, edit too and see what changes can be done :) 1. Stringers: In this code, we have created a function that will take any string as a input and perform various string operations using the inbuilt string function as follows: 1. length of string using len 2. First occurrence of a char in string using  .index 3. Counting the number of times the char as appeared using .count 4. Convert string to upper and lower case using .upper and .lower respectively 5. Checking if the string starts and ends with a particular letter using .startswith and .endswith  6. Splitting the string using .split and storing it in a list. THE CODE: def stringers():     s=input('Enter ...

Microsoft BizTalk Server | Interview Questions | Set 1

Hi Folks, Below is list of Some important questions that you may want to go through for a Biztalk developer role opening. Sharing the set 1 now just with questions. Will be sharing more soon. What is BizTalk Server? List down components of Biztalk server Biztalk architecture how is it? Types of schemas Document schema vs Envelope schema How to create envelope schema and its properties What is Property schema , how to create and its basic properties Purpose of using Flat file schema How to create a Flat file schema What do you mean by Canonical Schema What's is a message type Can a schema be without namespace What is min max and group min max property in a schema Explain Block default property Property promotion and types Distinguished field vs Promoted field Is it possible to promote XML record of complex content What is <Any> element in a schema Max length Promoted field and distinguished field What's Auto mapping and Default mapping  Can w...