Galaxy S4 Review

 The good: The Samsung Galaxy S4 has Android 4.2.2, a fantastic camera, a powerful quad-core processor, and software solutions for just about every scenario -- including working as a TV/DVR remote. It's also comfortable in hand and has NFC, a user-replaceable battery, and a microSD storage slot.

The bad: Its screen is dimmer than competitors', its plastic design gives it a cheaper look than its rivals, and we found the Galaxy S4's power button turned on at undesirable times. Not all camera modes work as promised, and a long list of software features can quickly overwhelm and confuse.

The bottom line: Its laundry list of features require time and effort to truly master, but the Galaxy S4 is the top choice for anyone looking for a big-screen, do-everything smartphone.

Henry A. Wallace

It may be shocking to some people in this country to realize that, without meaning to do so, they hold views in common with Hitler when they preach discrimination against other religious, racial or economic groups.

 
Henry A. Wallace

Shocking Quote

The most shocking fact about war is that its victims and its instruments are individual human beings, and that these individual beings are condemned by the monstrous conventions of politics to murder or be murdered in quarrels not their own.
 

Aldous Huxley

How is radiation effect to eyes between CRT, plasma,& LCD TV?

Electron tube screens found in classic TVs use high voltage in vacuum capsules just as the classic X-ray machine does.
But x-ray emission has several frequencies, the higher being the problematic (energetic) ones.
B&W TV's didn't have emission problems because the high voltaje used was under 10000 volts, and at that voltage no X-ray is produced.
Color TV's, use 21000 and even 22000 volts. More is prohibited, as at that voltages X-rays are produced in huge quantities.
At 21000-22000 volts the X-rays produced are low power and rather scarce, but if next to the screen, where they're concentrated, it's been suggested that they might be harmful to health. Which it is.
Plasmas are made out of low emission cells, and no radiation is generated toward the viewer.
LCD's are almost powerless, except for the fluorescent tubes used as backlight, which make no problem at all.
Mind X-rays don't harm eyes only, but every cell they can reach.
Then, you can watch closer Plasmas and LCD's with no risk, except for visual fatigue.

Disadvantageso of a Laptop

Personally, I have found they do not last as long as a desktop computer. Many individuals I know say they're laptop lasted approximately two years. I have found the same with my own which lasted about two and a half years. In addition, the fact that you can transport them easily makes them more susceptible to damage with the constant moving and carry.
It can be easily stolen
It can be easily hacked in to

Earthquakes in 2013

Earthquakes in 2013

Number of Earthquakes Worldwide for 2000–2013

Magnitude Ranging Between	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013
8 - 9.9	1	1	0	1	2	1	2	4	0	1	1	1	2	1
7 - 7.9	14	15	13	14	14	10	9	14	12	16	21	19	13	6
6 - 6.9	146	121	127	140	141	140	142	178	168	144	151	204	120	46
5 - 5.9	1344	1224	1201	1203	1515	1693	1712	2074	1768	1896	1963	2271	1313	477
Total	1505	1361	1341	1358	1672	1844	1865	2270	1948	2057	2136	2495	1450	529

By magnitude

Rank	Magnitude	Death toll	Location	Depth (km)	Date
1	8.0	19	Santa Cruz Islands	29	February 6
2	7.8	35	Iran-Pakistan Border	82	April 16
3	7.5	0	Craig, Alaska	9.9	January 5
4	7.1	0	Santa Cruz Islands	10.1	February 6
5	7.0	0	Santa Cruz Islands	9.8	February 6
6	7.0	0	Santa Cruz Islands	27	February 8
7	7.0	0	Indonesia	66	April 6

By death toll

Rank	Death toll	Magnitude	Location	Depth (km)	Date
1	186	6.6	Sichuan Province, China	12	April 20
2	37	6.5	Bushehr Province, Iran	10	April 9
3	34	7.8	Baluchestan Province, Iran	82	April 16
4	19	8.0	Santa Cruz Islands	29	February 6

Basic Computer Skills

Technology plays a major role in School Library Media Centers.  The following list of suggested skills are those most frequently used by media specialists.  This is by no means intended to be inclusive, nor mandatory, however it is a self-evaluative tool that can be used to determine the skills one has, needs, and is willing to learn.  There are many books, free online tutorials, and computer classes offered by various districts, community colleges, etc.  The skills listed were selected based on frequently asked questions and tasks media specialists' perform for faculty, staff and students.

Check  (ü) the skills you feel you have mastered.

General Computer Skills

¾       Install a program on a fixed (hard) disk

¾       Install or run software applications from a CD-ROM disk.

¾       Use the mouse

¾       Format a floppy disk

¾       Copy files from one disk to another.

¾       Delete files from a floppy or hard disk.

¾       Create folders / directories

¾       Copy files from one directory or folder to another

¾       Renaming a folder

¾       Deleting a folder and all its contents

¾       Work with more than one application at a time

¾       Save documents

¾       Print entire documents

¾       Print specific pages of a document.

Presentation Programs (Powerpoint, Hyperstudio)

¾       Create a Blank Presentation

¾       Create Presentation from Template or Wizard

¾       Add / Delete Slides

¾       Use different views

¾       Change slide order

¾       Insert Clip Art / Graphics

¾       Create a Text Box

¾       Cut / Copy / Paste Text

¾       Create Hyperlinks

 

Word Processing Skills (Microsoft Word, Works, WordPerfect, etc)

¾       Create a new document

¾       Open an existing document

¾       Change Margins

¾       Center a Cover Page

¾       Save a document to a floppy or zip disk.

¾       Edit / copy / paste

¾       Format text (different fonts, color, size, style)

¾       Check the spelling and grammar in a document.

¾       Find and replace text.

¾       Change text alignment.

¾       Use Tabs

¾       Create Columns

¾       Insert Clip Art

¾       Insert saved graphics from a disk

¾       Use Word Art

¾       Create Tables

¾       Use undo and redo feature

¾       Insert / Format Headers and Footers

Spreadsheets (Excel, Works, Clarisworks)

¾       Enter data

¾       Insert rows / Delete rows

¾       Insert cells / Delete cells

¾       Insert Columns /  Delete Columns

¾       Sort Data

¾       Use the formula bar

¾       Copy spreadsheet data into word processing document.

¾       Format Spreadsheet

Fix common PC problems

Having trouble with your computer? You've come to the right place. Even if you don't know a computer language (or want to), you can solve several common PC problems on your own.

In this article, we offer many ways to do what you need to do in Windows 7 and Windows Vista. Often, there may not be a Help topic for Windows XP, but the process is often the same as in Windows 7 or Windows Vista. The only difference is usually where to find the link in Control Panel. Most often, it’s just a matter of slightly different wording in the heading or the text describing the task. Don’t worry. If you search in Control Panel, you’ll usually find the link you need.

F1 is magic: Get help on your PC

If you can’t figure out how to complete a particular task in your software program—and you’re using a PC—the most important shortcut to know is the F1 key. Just push it while the program—Word, Excel, or whichever program you’re using—is open and active, wait a moment, and the Help window specific to your active program will appear. See an F1 key demonstration. The F1 key works with almost all Microsoft products, so it’s a helpful starting point for a wide variety of problems.

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The basics

If you’re encountering a different kind of obstacle – your new device won’t appear on your desktop, an application you added won’t run, you see an error message, or your computer is refusing to start up – here are a few preliminary steps:

1. Before adding any major hardware or software to your system, make sure you've recently backed up your Windows 7-based PC or your Windows Vista-based PC as a safeguard. By using the automatic backup functions, you can schedule regular upkeep for maximum convenience.
2. Many issues can be resolved by simply checking to be sure that all of your plugs are connected properly. After you are sure of that, try restarting (“rebooting”) your system. Turn your computer off, and then back on a few seconds later. If the problem continues, follow the steps below.
3. Write down the contact information for Microsoft Customer Service and Support, should you need to consult an expert. Take a second to print the below instructions as well, and keep them handy as you walk through the troubleshooting process.

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Locating the problem

Microsoft provides a couple of free options to help you locate and fix the PC issue you’re encountering:
Online: Is your PC showing an error message? If so, write down the exact number and wording of the error message, and search for it on the Microsoft Fix it Solution Center. In many cases, the Fix it center provides a "hot fix," which is an automated solution you can run on your PC with just one click! Even if you don’t see an error message, you may be able to find the solution in the Fix it center, either by topic or by searching. You can also check Microsoft Answers and Office Answers.
Download: You can try out the new Microsoft Fix it Beta. Just download it to your machine, follow the instructions to set it up, and then it will tell you if you have any updates to run. Note: Once you run it, the system will ask you to set up an account, or you can sign in with your Windows Live ID. Also, the Fix it Center will ask you to send information about your computer.
Walk through your system yourself: If you’d like to understand more about the issue you’re seeing, walk through the steps below to help you figure out if the problem is related to hardware, software, or the operating system (such as Windows 7, Windows XP, or Windows Vista). The following are some common indicators that can help you decide which is the right answer.
We recommend you start at the top by determining if your software is working, using the Software errors section that follows. If the issue persists, proceed to the Hardware trouble section and then to the System failure section. The lists on the right side of this page may also help you narrow down the type of trouble you are experiencing.

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Software errors

If programs refuse to install, won't appear on your desktop, can't seem to run without freezing, don't load at a decent speed or function properly, or Internet access is unavailable, here's how to troubleshoot:
General issues

1. Confirm that your PC meets the software's minimum system requirements. If it doesn't, you'll be unable to run the program without upgrading your computer's hardware. Note that PCs which barely meet or just slightly exceed these minimums may run the software more slowly and can be less reliable. Windows 7 and Windows Vista users can reference the Windows Experience Index to quickly gauge their PC's general capabilities.
2. Check for compatibility with Windows 7 and Windows Vista.
3. Close open programs and windows that you're not currently using. These can eat up system memory and processing power, slowing your PC or preventing additional software from running. Try running the program again.
4. Check available hard drive space. Roughly 5 to 10 percent of your hard drive's total storage allotment should be left free to ensure optimum system performance in Windows 7 and Windows Vista, prevent crashes, and keep Windows running at top speed.
   Note Use Disk Cleanup to free more space:
   Windows 7
   Windows Vista
   Windows XP
   Check for program updates and information on frequently encountered issues at the software manufacturer's website. For Microsoft products, you can also load Windows Update for Windows 7, Windows Update for Windows Vista, or visit the Microsoft Download Center. If you install an update, restart your computer, and attempt to run the program again.
5. Uninstall or delete unwanted programs in Windows 7 or Windows Vista to cut down on clutter and remove any drain on your system's resources.
6. Disable programs you don't use to in Windows 7 or Windows Vista by preventing them from automatically loading when Windows starts. If you’re running Windows 7, restart your computer, and try the program again.
7. Defragment your hard drive in Windows 7 or Windows Vista to improve performance.
8. Scan for viruses and spyware. Windows Defender in Windows 7 and Windows Vista can help detect and prevent threats, along with preventing annoying pop-up notices and unauthorized home network intrusions. You can scan your PC for free.
9. Reboot your computer and try loading the program again. If it still won't load or work correctly, you may need to uninstall the software and then reinstall it from scratch and reboot again. Advanced users can also try these advanced troubleshooting tricks in Windows 7 and Windows Vista.
10. Consult Microsoft Help and Support and the Windows Community. If live assistance is required, first contact the software manufacturer's customer support department. For additional assistance, try Microsoft Customer Service and Support.

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Internet Connectivity

Whether you have a modem or a Windows 7 or Windows Vista home network, answers to common Internet access and online networking problems can be found at Microsoft Help and Support. Quick references include:

Dropped signals

Finding wireless networks

Internet connection problems

Network connection issues

Slow speeds

• Using Internet Explorer
• Download IE8 if you have Windows XP
• Download IE9

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Hardware trouble

Should equipment fail to turn on, be recognized by your system, or function properly, follow these steps to address some of the most common hardware issues:

1. Determine that equipment has been assembled correctly, by consulting your product manual or referencing the manufacturer's website.
2. Confirm that your device is securely plugged in and receiving power. For equipment that relies on an A/C (wall outlet plug) power adapter, you can double-check that the outlet is functioning correctly by plugging in another device and observing if it starts up or begins charging.
3. Check to see whether equipment is properly connected to your PC by making sure all cables are securely plugged into the correct ports.
4. Verify that hardware is turned on.
5. Look for error messages displayed on either the equipment itself (commonly found on a small LCD screen) or on your desktop. Solutions for many of these can be found in your product manual or by checking this comprehensive database.
6. Install or reinstall drivers for the device in Windows 7 or Windows Vista. Windows automatically searches for drivers when new devices are connected and notifies you of any available updates. It may be necessary to manually install them yourself, if these files are contained directly on the device, on a CD/DVD sold with the equipment, or on the manufacturer's website. To activate setup, just double-click on the driver installation program. You may need advice for Windows 7 or Windows Vista if the installation program fails to run.
7. Confirm that you're using the latest drivers for your hardware. Manufacturers routinely issue patches to correct errors and inconsistencies that users encounter. To do so, simply use Windows Update, visit the Microsoft Download Center, or check the Download or Support section of the manufacturer's website.
8. Reboot your system and test the device again.
9. Consult Microsoft Help and Support, the Windows Community, or the manufacturer's website for assistance. The following resources also offer solutions to common problems with popular devices, including:

Audio and sound cards

CD or DVD drives

• Digital cameras

Speech recognition

• Keyboards
• Mice
• Monitors and video cards

Network adapters

Printers

• Recordable media

Scanners

TV tuners

USB Devices

• Webcams
• If all else fails, contact the hardware manufacturer's customer support department. You can also try your computer manufacturer's customer support group or Microsoft Customer Service and Support for additional assistance.

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System failure

Can't get your PC to start up or shut down? Is Windows stalling out, randomly turning your computer off, or rebooting without warning? Follow these step-by-step instructions to restore system health.

1. Confirm that your PC is plugged into an electrical outlet and receiving power. If so, reboot and see whether the problem persists.

Try restoring your system.

Check to see if you have a memory problem.

Scan your hard drive for errors.

Look for driver problems.

• Try advanced boot options and working in safe mode.
  Windows 7
  Windows Vista
• Did you just install a new hardware device or driver in Windows 7 or Windows Vista before Windows stopped working? Determine the cause and address the problem.

Repair your PC using the Startup Repair function.

Reinstall Windows.

• If troubles remain, consult Microsoft Help and Support or the Windows Community. If you still need help, contact Microsoft Customer Service and Support.

Hard drive failure
In a worst-case scenario, system failure may be caused by a damaged or corrupted hard drive. There are many warning signs that may indicate this problem:

• Your system won't boot.
• No operating system is detected.
• The computer hangs during startup.
• Your PC is making strange noises.

Banana

This is interesting. After reading this, you'll never look at a banana in the same way again.
Bananas contain three natural sugars - sucrose, fructose and glucose combined with fiber. A banana gives an instant, sustained and substantial boost of energy.

Research has proven that just two bananas provide enough energy for a strenuous 90-minute workout. No wonder the banana is the number one fruit with the world's leading athletes.

But energy isn't the only way a banana can help us keep fit. It can also help overcome or prevent a substantial number of illnesses and conditions, making it a must to add to our daily diet.

DEPRESSION:
According to a recent survey undertaken by MIND amongst people suffering from depression, many felt much better after eating a banana. This is because bananas contain tryptophan, a type of protein that the body converts into serotonin, known to make you relax, improve your mood and generally make you feel happier.

PMS:
Forget the pills - eat a banana. The vitamin B6 it contains regulates blood glucose levels, which can affect your mood.

ANEMIA:
High in iron, bananas can stimulate the production of hemoglobin in the blood and so helps in cases of anemia.

BLOOD PRESSURE:
This unique tropical fruit is extremely high in potassium yet low in salt, making it perfect to beat blood pressure So much so, the US Food and Drug Administration has just allowed the banana industry to make official claims for the fruit's ability to reduce the risk of blood pressure and stroke.

BRAIN POWER:
200 students at a Twickenham school ( England ) were helped through their exams this year by eating bananas at breakfast, break, and lunch in a bid to boost their brain power. Research has shown that the potassium-packed fruit can assist learning by making pupils more alert.

CONSTIPATION:
High in fiber, including bananas in the diet can help restore normal bowel action, helping to overcome the problem without resorting to laxatives.

HANGOVERS:
One of the quickest ways of curing a hangover is to make a banana milkshake, sweetened with honey. The banana calms the stomach and, with the help of the honey, builds up depleted blood sugar levels, while the milk soothes and re-hydrates your system.

HEARTBURN:
Bananas have a natural antacid effect in the body, so if you suffer from heartburn, try eating a banana for soothing relief.

MORNING SICKNESS:
Snacking on bananas between meals helps to keep blood sugar levels up and avoid morning sickness.

MOSQUITO BITES:
Before reaching for the insect bite cream, try rubbing the affected area with the inside of a banana skin. Many people find it amazingly successful at reducing swelling and irritation.

NERVES:
Bananas are high in B vitamins that help calm the nervous system..

Overweight and at work? Studies at the Institute of Psychology in Austria found pressure at work leads to gorging on comfort food like chocolate and chips. Looking at 5,000 hospital patients, researchers found the most obese were more likely to be in high-pressure jobs. The report concluded that, to avoid panic-induced food cravings, we need to control our blood sugar levels by snacking on high carbohydrate foods every two hours to keep levels steady.

ULCERS:
The banana is used as the dietary food against intestinal disorders because of its soft texture and smoothness. It is the only raw fruit that can be eaten without distress in over-chroniclercases. It also neutralizes over-acidity and reduces irritation by coating the lining of the stomach.

TEMPERATURE CONTROL:
Many other cultures see bananas as a 'cooling' fruit that can lower both the physical and emotional temperature of expectant mothers. In Thailand , for example, pregnant women eat bananas to ensure their baby is born with a cool temperature.

So, a banana really is a natural remedy for many ills. When you compare it to an apple, it has FOUR TIMES the protein, TWICE the carbohydrate, THREE TIMES the phosphorus, five times the vitamin A and iron, and twice the other vitamins and minerals.. It is also rich in potassium and is one of the best value foods around So maybe its time to change that well-known phrase so that we say, 'A BANANA a day keeps the doctor away!'

General Computer Maintenance Tips

General Computer Maintenance Tips:

• Keep all of your working files in one folder. The My Documents folder is offered by Windows expressly for this purpose. The benefits of keeping all your files in one place are multiple. One, you know where all your files are, two, it's easy to back them all up at once, and three, your machine will run faster.
• Don't put your personal files on the root of the C: drive. If you store a large number of files in the root folder, you could corrupt your disk file table which could lead to a "NTLDR is missing" error message when you boot the computer. Very bad. If you have personal files on the C: drive now, move them to the My Documents folder.
• Uninstall programs that you are not using. But don’t just delete the program. Remove it correctly so you won’t cause Windows errors. Go to Start, Control Panel, Add or Remove Programs. Find the program you want to remove in the list, and click the Remove button.
• If you download a zip file and expand it, delete the original zip file when you are done.
• Store your hardware drivers and purchased software installer files off your hard drive. A flash drive works great for this purpose.
• If you aren’t already using one, get a good surge protector and plug your computer and peripherals into it. If you live in an area with bad lightening storms, unplug you computer and peripherals during the storm.
• Practice safe computing. Don't accept software or downloads for which you didn’t ask. Delete any suspicious email without opening it. And even if the email came from your best friend, don't open any email attachments with the following extensions: * .exe, .com, .vbs, .bat, .mdb, .reg, and .js

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Scheduled Computer Maintenance Tips:

Daily computer maintenance tips

• Update your anti-virus scan and anti-spyware definitions, if they aren’t being done automatically.
• Back up any critical files that you have changed today to your flash drive.

Weekly computer maintenance tips:

• Make sure your anti-virus and anti-spyware programs have been updated with the latest definitions, and run a full scan from both programs.
• Reboot your computer. (If you shutdown your computer each night, disregard this tip). If you leave your computer on all the time, definitely do this. It will reset the RAM, and your computer will run much better and faster.

Monthly computer maintenance tips:

• Clean up your temp files, your temporary internet files, and other junk files about once a month. To do this easily, you can either download my favorite program for cleaning, CCleaner. Or you can run the built-in Windows Disk Cleanup tool for XP or the Disk Cleanup for Windows 7.
• Ensure you have the latest Windows updates installed. Go to Internet Explorer, Tools, Windows Update. Click on the Custom button. (I always use the Custom button so I can check what’s going to be installed before it gets installed). Windows update may ask you to download and install the latest version of itself. Go ahead and do that, then click Close when it’s finished, and then Continue. It will then check again for real updates and offer those. Choose which updates you want to install. Uncheck the ones you don’t want to install.
• Clean out your email, paying special attention to your Inbox and Sent box. The easiest way I’ve found is to sort your email box by size of the message, and delete the largest unneeded emails first.
•  
  Quarterly computer maintenance tips:
• Change your passwords. (Yes, I know this is a pain, I hear you groaning. But it’s really a good idea to do this).
• If you have a mouse with a roller ball (non-optical) clean it out. Use a Q-tip and some isopropyl alcohol to clean the ball and the internal rollers. Remove any caked on grease, oil, and dust that may have accumulated.
• Check to see if you need to defragment your computer’s hard drive. To do this in Windows XP, go to Start, All Programs, Accessories, Systems Tools, Disk Defragmenter. Run an analysis first by clicking the Analyze button. Go do something else while it runs. Windows will tell you if it needs to be defragmented. If it does, click on the Defragment button, and again go do something else while your computer runs this.For Windows Vista, this computer maintenance tip is a little different: Go to Start, All Programs, and click on Accessories. Find Systems Tools, Disk Defragmenter and click on it. Vista will ask you for permission to continue. Click Continue. Vista doesn't give you the ability to choose to defragment, it just assumes you want to and presents a schedule to do so. You can stick with the suggested schedule, or modify it. If you want to kick off the defrag process immediately, click the Defragment Now button. It will then ask you which drive you want to defrag. Uncheck the drives you don't want to defrag, and then click OK.
• Check all your computer cables and make sure they are plugged in tight, and not being pinched or pulled in a way that is damaging them.
• Check your C: drive (hard disk) for disk errors. NOTE: please make sure you have a current backup of your files before you run a check disk command. (Also, do this immediately if you see a message stating that your Windows “volume is dirty”). To run a check disk manually on your C: drive, do this:
  
  1. Click Start, select Run.
  2. In the box, type cmd and click Ok. In the black DOS window, type: chkdsk c: /f (The /f command automatically fixes any errors encountered.
  3. Go to Start, Shutdown, and restart the computer. When the computer restarts, it will run chkdsk automatically. The Check Disk process could take over an hour, so schedule this when you have something else non-computer related to do. On rebooting the PC, you will see a window that shows the progress of the disk check. When it's finished,, it will boot back to the normal version of Windows.

Disclaimer included below. Opening your computer case could void your warranty, and expose you to possible electric shock. Please be careful.
6 month computer maintenance tips:

• Go on dust patrol. FIRST, TURN OFF and UNPLUG your computer from the electrical socket. Blow out your keyboard with a compressed air can, and then turn it over and tap it with your hand a few times to shake out any other junk. Brush off the dust bunnies from your PC fan (and any other parts in the back of the PC). Also, open the computer case and GENTLY blow or vacuum out any dust in there, especially around the CPU chip (the big square chip on the mother board). MAKE SURE you touch something metal to ground yourself before you open the case and reach in there. Even the slightest static electricity zap can ruin a computer chip. This step is especially important if you live in a dusty place like Wyoming.

Annual computer maintenance tips:

• Check to see if you have the latest hardware drivers loaded for your printer, monitor and other peripherals.

I hope these computer maintenance tips help your computer run better and faster.

THE MOBILE PHONE REVOLUTION!

  A BRIEF HISTORY

The concept of mobile phones, hsbc swift bank code or cellular phones as they are also known, was born in the late 1940s, in the United Kingdom and the U.S.A. Researchers studied, the then current police mobile (radio) car phones, and worked out that by limiting the range or 'service area' of transmitters, they could re-use the same radio frequencies over and over again. This allowed them to theories the possibility that with this technology, many users would be able to share the same network. They were unable to put a production system together to prove this theory, as there simply wasn't the computer technology available at that time.
It wasn't until 1971 that ATT and Bell Labs proposed the first commercial cellular, mobile phone network. The long delay was not just to do with technological limitations of the time, it was for the most part due to the American FCC limiting the spectrum of radio frequencies made available for mobile communications. The proposal was for a cellular network, which was to consist of many small broadcast towers, covering a small area (termed a 'cell'), a couple of miles in radius. As the mobile phone user moved across this network, his/her call would be automatically passed on from tower to tower. It took the FCC until 1982 to approve this proposal.
Interestingly enough it wasn't the USA that launched the world's first commercial cellular network service. The first was by NTT of Japan, in 1979. The first fully automatic, first generation cellular network (known as 1G), was developed by Nordic Mobile Telephone in 1981. 1G was still based on analog radio signals. Second generation (2G) digital cellular networks arrived in 1991. High speed, third generation (3G) cellular networks became a reality when the Japanese company NTT DoCoMo rolled out it's commercial WCDMA network.
Mobile phones are not the bricks that they were a few decades ago. Today's mobile phones are small enough to slip in to your pocket but also powerful enough to surf the internet, send emails and even make video calls. There are many different mobile phone manufacturers. Some of the biggest include; Nokia, Sony and Motorola