Now that electronic product is our daily
It is inevitably triggering life "mobile
Phone ", and some say" cellular phone ".
But how does this phone work? General Phone
What's the difference from? Mobile phone mode
Generally speaking, I will present you today.
First of all, the mobile phone but one
"Rodeo". Initially the mobile is like a normal phone
Although the work is being used extensively now.
Some of its uses below
It is mentioned -
- Saves phone number and address
- Keep the calendar and the To-do list
- Place an appointment and its alarms
- Calculator
- Email Benefits
- Advantages of viewing web pages
- General games
- Works as a GPS, so where are you
Are there
You can also see its map. - Camera: You have digital in many mobile phones
Camera
You can upload photos by mail to another.
Besides, mobile with more opportunities in the market
The phone is coming to the market.
Primary: Just starting from the mobile phone?
It's hard to guess what to do. But the first two are that
Technology is the ancestor of Rodeo and Telephone. this
The combination of the two and the modern form is today's mobile
Phone Graham Bell invented telephone 1876
After 18 years and 18 years later, in 1894, the Marconi Radio
Discover.
Mobile Communications Before Mobile Phones
Many people use the radio in the car for this
Would have But its size is too big to be easy
Could not roam hand in hand. And generally it is only 25
With Channel via Central Antanan
Would communicate. That means, the radio phone's
The transmission capacity would have been 40 to 50 miles.
And the number of the channels
Due to being low, many people use one at a time
Could not Now let's see how the current mobile phone
Works. Currently a mobile phone or city
The company shares a number of cells. Generally
Each cell is equal to 10 square miles and is equal to sixth
And each cell has a base station. Each and every
The cell can be used to talk about 800 Frequency. Though mobile
Many towers in a city to speak on the phone
Needed but the number of users currently is very much
Due to the high cost, the cost decreases and the merchant
The way
Is successful. Every town has a central office
Keeps in touch with base stations or towers. this
Central Offices Mobile Telephone Switching
Office (MTSO) says. Cell mobile phone and base
Station uses low powere transmissins. As a result
The mobile phone is running very fast with battery
As a result, today's mobile phones are so small
The size has been made, and the future will be even smaller.
When we do mobile, then control it
SID (System Indentification Code) via Channel
Accepts it and it's inside the mobile phone
See it. Also contact it with MTSO
Keeps it The location of the central office mobile phone is a
Puts it in the database. That's when you're in the city
The Central Office of the Central Office
Is in the database. Whenever someone calls you,
Then this Central Office comes out of its database
You are near a tower, and the tower
From the frequency of your mobile phone
Contact the two contacts
Gives. And you can talk.
Another big advantage of mobile phones is that you are in the car
Or you can talk about anything else while running.
When you speak, speak from one cell to another
If you are looking forward to a cell, then now
Due to the increase of distance from the used tower
Connecting to another tower, as a result
You go from one place to another
You can continue your conversation without any hesitation.
The mobile is small, but the moments in the moment
You can do so much because it's inside
DSP (Digital Signal Processor) is the reason for today
Mobile is so smart!
What is Duplex Channel?
Mobile phone duplex channel
Use it. You may have a waqtiki which is the police sergeant
Use it. Use this walkie single channel
Do it. That's why only talking or listening is possible. One
It is not possible to talk and listen to both. Such as
In the waqtiki the word Sergeant terminates the word over
Say Then the other side talked about it. But then
Use a duplex-channel on mobile phones
Because of that, you talk to one and just like a phone
You can listen.
What is GSM?
GSM is an international standard which is essentially in Europe,
In large numbers in Asia, America, Africa and Australia
Is used. The GSM is also very popular in Bangladesh
More than The rural phone also uses this GSM.
GSM from 900 MHz in Europe and Asia
1800 MHz goes and America is 1900
Moves to Megaherge. You buy gsm phone
To use in Bangladesh, you only need SIM card
To buy the SIM Subscriber indenification module. this
SIM card basically looks like a small chip, of which
Inside the mobile company's connection ID and user
Information is stored. As a result that
Insert your SIM card in any set and immediately
It will work as you do.
img credz: pixabay.com
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