How Mobile Phones have changed over time?

    
         The cell phone has greatly improved over the ages. Before it was very big, larger than the usual handset for your house phones. Plus connection and sound quality wasn't as good. Today, we have color screens, texting, voicemail, internet access, built-in cameras, and so on.
              Mobile phones evolved over five different generations, the latest of which is still being rolled out and adopted by consumers.

        The analog technology with the first being built in Chicago in 1977.Known as the Analong Mobile Phone System (AMPS), it was built by AT&T and it took the FCC 11 years to approve AT&T’s initial proposal in 1971 before they were assigned the 824-894MHz range on which to operate AMPS.

          Five years later it was the first 1G network to cover an entire country. Then came the Nordic Mobile Telephone (NMT) network in 1981. Operating in Denmark, Sweden, Finland and Norway, it was the first to feature international roaming.

Digital Cellular Networks or “2G”:

     Another advancement made possible by 2G was the introduction of SMS messaging, with the first computer generated SMS sent in 1992 in the UK. A year later in Finland, the first person-to-person SMS was delivered using GSM technology. As popularity grew, pre-paid mobile phones and plans emerged in the late 1990s which further popularized SMS amongst all ages.

Mobile Broadband or “3G”:

NTT DoCoMo pioneered the first mobile Internet service in Japan in 1999 on existing 2G technologies, but it was soon replaced with their launch of the world’s first 3G network in October 2001.
While 3G was still being developed a number of “2.5G” services appeared in an attempt to bring older technologies up to speed. Unfortunately speed was the lacking factor, and while technologies like GPRS and EDGE provided improvements over standard 2G, they did not match the speed of existing 3G technologies.

 

Native IP or “4G”:

     While no official standards exist for 4G, a few technologies have laid claim to the title. The first was WiMAX, offered by Sprint in the US but perhaps the most successful has been LTE, which is popular also in North America but non-existent in some territories such as Australia. 4G marks the switch to native IP networks, bringing mobile Internet more in-line with wired home Internet connections.

Speed is of course the big advantage, with potential advancements of ten times over 3G rates. The fourth generation of mobile communication is still evolving, and we’re bound to see new standards, speed increases and coverage benefits in the next few years.

 

 

 

Using Mobile phones in Public

                                Using Mobile Phones in Public
Pros:
       In airplanes and hospitals, cell phones can interfere with the functioning of delicate instruments, a serious consideration. Many states have banned cell use while driving, citing a relationship between phones and traffic accidents.

Pros: Peace and Quiet:
 Many people go to places such as libraries specifically to focus and do work. Others attend church or religious services for time to worship and reflect. People who use their "cell yell" in such a setting distract others.

Pro: Inconveniencing Others:
      Often cell phone users will multitask, attempting to carry on a conversation while using an ATM, driving or completing a store transaction. Their divided attention becomes an obstruction to the cashier and an inconvenience to those behind them, who must wait longer. 
Cons:
         Cell phones have greatly influenced society. Safety, for certain, is one benefit that they provide. If you are in an accident, you can call for help. If you are lost, if your car breaks down, wherever you go you have access to another person unless you are out of range of service. They have also been beneficial to business and industry. Because they do not charge for domestic long distance calls, communication with people across the country has been made more affordable. Business can be conducted anywhere a cell tower can reach, and today's smart phones can also help you navigate with GOS, can allow you to look up information on the Internet, and can even let you check e-mails and do work on your phone.
Con: Emergencies

      Genuine emergencies do occur, and some calls truly cannot wait. People who have sick or elderly family members, parents expecting an important call from their child, and those in the midst of a crisis believe it's acceptable to leave their phones on in public.

Buying a iphone5

 

Email-Protocols

                                                     Email -Protocols
What is IMAP4?
IMAP4:
           Abbreviation for Internet Message Access Protocol, which is a standard protocol for accessing e-mail on a remote server. It allows users to check headers of the emails; create, delete and rename mailboxes; check for new messages; permanently remove messages; search for certain parts or an entire note remotely without having to download the mail on their local hard drive. IMAP requires more Internet time as it needs continual access to the server, while handling the mail. It was developed in 1986. Its latest version is IMAP4.
What is POP3?
  POP3:           
             POP3, which is an abbreviation for Post Office Protocol 3, is the third version of a widespread method of receiving email. Much like the physical version of a post office clerk, POP3 receives and holds email for an individual until they pick it up. And, much as the post office does not make copies of the mail it receives, in previous versions of POP3, when an individual downloaded email from the server into their email program, there were no more copies of the email on the server; POP automatically deleted them.
POP3 makes it easy for anyone to check their email from any computer in the world, provided they have configured their email program properly to work with the protocol.

What's in an image?

What's in an image?

Monochrome Bitmap (*.bmp;*.dib):
A monochrome bitmap is a type of digital image that displays only a single color, usually black. This is a type of one particular file format, which is referred to as a bitmap (BMP), and is often used in the creation of simple graphics. In a bitmap, each pixel or “picture element” of an image is represented by a particular number of bits, which are units of information. A monochrome bitmap has pixels that are only one bit, allowing each pixel to either display a single color or no color, often seen as black and white.
16 Color Bitmap(*.bmp;*.dib):
      16 Color bitmap file is the same as a Monochrome bitmap fil
except it uses a range of 16 Colors instead of black and white.

256 Color Bitmap(*.bmp;*.dib):

      It's a rectangular grid of pixels and each pixle is represented by a singla bit.Eight pixles are in each bitb of the bitmap.The format is often used for bitmopped text or single_colored images.This particular file uses 256 different colors.

Transfering an images between phones

4G Networks

                                                            4G NETWORKS
 What is 4G ?

           A 4G network is the fourth generation of wireless, mobile communication. The overall goal for the network is to provide a comprehensive and secure network communication solution with much faster data speeds than previous generations. While still in development, the foundations for upgrading from 3G to 4G service started in the early 21st Century as companies began to introduce new technology. New standards such as WiMax and Long Term Evolution (LTE) have been referred to as 4G, though there is some debate regarding their status.

What effect 4G will have on what we can do with our mobile phones?

•  In telecommunications, 4G is the fourth generation of cell phone mobile communications standards. It is a successor of the third generation (3G) standards. A 4G system provides mobile ultra-broadband Internet access, for example to laptops with USB wireless modems, to smartphones, and to other mobile devices. Conceivable applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing and 3D television. Recently, Android and Windows-enabled cellular devices have fallen in the 4G category. One base advantage of 4G is that it can at any point of travelling time provide an internet data transfer rate higher than any existing cellular services (excluding broadband and Wi-Fi connections). 
• When 4G networks become standard, users should notice a difference. 4G technology has some persuasive benefits, which are helping accelerate the industry's push in its direction. Peak times might still be a little pokey (by the standards of people spoiled by superfast Internet service), but overall, it should be a step up from the service most cell phone users are familiar with today.