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Wireless Communication

This rapidly growing segment of the communication industry has the potential of providing high-speed high-quality information exchange between portable devices. Wireless communication enables several applications including multimedia Internet-enabled cell phones, automated highway systems, smart homes and appliances and videoconferencing, among others.

4,616 Questions

Who first invented the cell?

Robert Hooke was the first man that discovered the cell.

Challenges of media?

One challenge facing media today is to get informative stories to the public. It is also hard for media to stay objective and only print the facts.

What is CDMA evdo reva?

Rev. A is the successor to Rev. 0 of EVDO. Rev. A offers much faster browsing and downloading speeds than Rev. 0.

Can you terminate your cell phone contract without paying a fee?

If you are talking about switching cell phone providers, the answer is yes. You may find problems however getting a contract based on credit. There is a good chance you will be required an upfront deposit anywhere from $500.00 to $1,000.00 depending on the plans and phone.

How many kids have cell phones?

Well I got my first cell phone when I was 8. So you have to talk to your parents about that.

What are the two ways fluoride is made available to tooth surfaces?

The two ways fluoride is made available to the tooth's enamel are topically and systemically. Topically is to use fluoridated toothpaste, fluoride treatment or similar agent such as fluoridated mouth wash. Fluoride benefits (if any) via systemic application are described in the "theory" that by ingesting fluoride such as fluoridated drinking water, consuming a beverage or any food or drink that is made with or contains the chemical compound fluoride (or otherwise processed by fluoridated city drinking water) enters the body and is absorbed into the body fluids. Simple water filtration does not remove the fluoride, so anything such as tap water, fruit juice or Gatorade will contain fluoride if the source of the water is fluoridated. The two most successful ways to remove the fluoride is by Reverse Osmosis filtration or Distillation. Most cities in the United States add fluoride to drinking water so that your body can ingest it and the thinking behind this is that the fluoride is made available to the tooth's enamel via the saliva and thus absorbed into the enamel. The Fluoride Myth claims that this absorption of fluoride into the enamel causes the tooth enamel to re-mineralize and thereby strengthen it. The problem is that there have been no sound studies to prove this "re-mineralization process". It has been a lie told to us for decades so we would believe that fluoride is good for us. Fluoride is the byproduct of sulfuric acid reacting with the naturally occurring mineral fluorspar (also known as fluorapatite). Fluoride is also produced by aluminum metal manufacturing, fertilizer manufacturing, as well as atomic bomb making. Fluoride compounds are used for glass etching, electroplating, rust and stain removal, cleaning agents and have also been used in rat poison. More and more researchers and chemists are coming forward to prove that Fluoride is actually a harmful poison and that it does damage to bones, teeth and causes brain damage in infants as well as other psychological disorders in children such as ADHD, etc. All you have to do is spend some time searching Fluoride on your favorite search engine and you will find the truth - good luck.

What does for shadowing mean?

shadowing in general is when two variables/methods or any other element has same name and any one of the both can shadow( in OOP case override) the behavior of the other one. garima

shadowing in general is when two variables/methods or any other element has same name and any one of the both can shadow( in OOP case override) the behavior of the other one. garima

shadowing in general is when two variables/methods or any other element has same name and any one of the both can shadow( in OOP case override) the behavior of other. garima

How do you stop some one harassing you having told someone its all over and dont want to see them how can they be stopped from phoning texting and comiing to the house its very worrying?

This is a hard one as its always difficult to finally say goodbye. The best thing to do is next time the person is outside your house, phoning or texting you, say in a calm and understanding matter "I don't want to know anymor, please delete my number and move on".

If you say this in an angry or aggressive manner, this just gives the person fuel to keep chasing you or trying to get a bigger reaction from you. Make it sound serious but in a nice manner. I am being bothered myself by my Ex. It doesn't help that we both like Car shows and have a keen passion of cars. We see each other several times a year at the shows but it always ends in agro as I now take my new fella - which of course my ex doesn't like. But don't let someone control you. Enjoy yourself, go to the places you want to go and don't try threatening them with the Police, as that usually never works. They will just keep pushing to see if you have the balls to walk into that Police station and by then, it becomes serious!! Honestly, eye contact, a calm manner and "I seriously dont want to know anymore" usually works!! Hope this helps

How do you use speakerphone on a razr v3xx while your phone is shut?

Dial the phone number or answer the phone and once the phone says connected press speaker phone and then close the phone and it will still be on speaker phone. The most important thing is waiting till it's connected. Once you hear the other person's voice then you can close it and talk them with it closed.

Are Narcissistics really hopeless causes?

I think that depends on what you want for yourself. If you want a monster in your life.... someone to prey on you and make you feel crazy because they say they want good things for you yet stab you in the back and betray you all the time....then they're fine just the way they are. Keep them. Pretend you're working on them, if you wish but.... don't pretend you're going to get anywhere with that strategy. Overwhelming chances are that they'll remain who they are..... and you'll do the changing (read that as going a bit "off" in the head.) Hell... maybe you'll go entirely crazy if you stay long enough.

It's probably easier to contemplate changing someone, WHO CAN'T ON ANY LEVEL BE CHANGED, than trying to rid yourself of one but...... both plans kinda suck, IMO. I struggle with the latter choice. It's awful, either way, but I don't hold out any silly notions about changing him.

It's Mr. Toad's wild ride either way. Personally.... I find the human on human agression aimed at me in threats, and actually carried out, by my N, to be horrifying and paralyzing. Changing him doesn't enter my mind. What keeps me dizzy and feeling seasick is..... his offering to change while providing stellar consistent behavior, seasoned with short bursts of his real (threatening) N self. More than enough to let me know he's not really changing but man..... he's so convincing in his attempts to change my mind about his intentions and ability to change! And when we talk... had admits he's not changing. He admits he's faking but.... to his way of thinking... any woman would/should be happy simply to have him "act" like a good father and husband. He thinks the important thing is what society around us actually SEES. It's all about appearances. He can't even fathom that his being a lying, untrusthworthy, predadatory person in a position of trust is a truly terrible thing. At least, for me it is. ::shrug:: Maybe for other people, who care less about reality than appearances, it's a fine thing.

Read that last paragraph as people who aren't ready to give up the distraction of a lifetime. Sure, N's are exciting. They provide us with a way to completely lose ourselves, and all vestiges of caring for ourselves, so busy are we trying to guage the mood and temperature of the room our N breaths in. We become dependant on their favor and/or fury. It consumes us. What are we without that struggle? Then add our ill fated attempts to "change them." How could we not be enthralled... they're capable of keeping us so off balance with manipulation and promises (that mean less to them than squashing a bug.) How utterly exhausting that existence is. How could we come up with a more all consuming distraction from creating and living a fine life..... for ourselves..... than that? Something to think about.getting off soapbox:: Tremusan

If your husband hides his cell phone when he goes to bed is he cheating?

that means there are things he wants to keep from you so its a high possibility. but that doesn't mean he is

ANSWER:

From my own personal experience, your husband is hiding something from you. It could be telephone numbers or some pictures but his the only one that knows. My reason for saying it might be telephone numbers, my husband was hiding a few personal tel. numbers from 2-3 women he met on a dating site he was in. There's 2 special numbers he kept and was very important to him, I saw it from his phone statement.

I was naive because I trusted him but when I put things together it all add up. I know that he uses his cell but I never seen it for at least 2 1/2 months. So I will say that your husband has some explanation to tell you. Don't keep your mouth close, but use it by asking him or else it might be what you are thinking. Don't wait..

What role does operations management play in producing goods and services?

To coordinate the activities of all the factors of production namely:labour,land,capital,technology,and equipments. To coordinate the activities of all the factors of production namely:labour,land,capital,technology,and equipments.

If you sent a text message from your boyfriend's cell phone to his ex and said 'she's not here - call me back' why would she call within two seconds?

Your question is not very clear. Why in the first place are you trying to stir up trouble with his ex-girlfriend? All this does, is leads to arguments with your boyfriend. Why bring on more problems for yourself and your boyfriend. His EX is an EX for a reason. Do you want to be the next EX? That girl called back because she thought her ex-boyfriend is still interested in her. That is why she called back. Don't be dumb. Leave the ex-girlfriend alone. You don't want your boyfriend to be talking to her and having any contact with his ex. All you are doing is bringing up old memories for him. You want him to concentrate on you and not her. Be smart and concentrate on the two of yous relationship. If you feel he is contacting his ex-girlfriend, then confront him about it. If he lies and if you know he is lying for sure, you cannot trust him. One lie will lead into other lies and heartaches. If he truly wants to be with you, he should delete his ex-girlfriend's number from his cell phone. Since he hasn't, this tells me he is still interested in her and does contact her. Be aware. probabily because you texted her from her Ex's phone.

Is it possible to display the result on a 7 segment LED display wirelessly to another 7 segment LED display a few meters away?

Remote 7 segment display ideaIt is possible only with another means of transmission of which infra red or bluetooth is most propably the easiest and better known. The problem arises, that you will need a transmitter and a receiver, for which you will need quite a few complicated circuits. Bluetooth is cheap and relatively easy once you know how to connect it to the LED display, but it would be much better to connect the transmitter to whatever is driving your first display. This is usually way beyond most electronic hobbyists capabilities. I for one won't even try! It would be cheaper in development time to buy a remote indicator, even two smartphones with appropriate software could be used. The Nokia 6680 can support Hyperterminal, which means you can control another device with it via bluetooth, cable or infrared.

A relatively cheap and easy way would be to add an infrared(IR) LED in your display. I.e. you would have 8 LED's to drive. The last IR LED could then be programmed to transmit a different code for every "digit" you display. (Try Morse code, but remember that it have to be real fast.) Your IR receiver needs a programmed decoder on te other side to interpret code and re-convert it back to 7 segment display. The electronics for this can be found in any old ball mouse, but the "lens" in front of the LED's need to be modified to transmit over longer distances. An old TV remote have the best IR LED's for a transmitter, but they are cheap anyway.

Some cheap digital two way radios have the capability of sending digital data over the air, so it could be possible to set this up if you know electronics and programming.

More Ideas- There are cheap low-power FM transmitter circuits or pre-built boards available, and one-chip FM receivers. Or homebrew one. Or AM circuits. Stay legal with the FCC, though.

- Use an standard IR receiver designed for remote control applications. These are cheap and include a 32-40 kHz modulator to avoid interference from other light sources. You can even hack a universal remote control and allow for other commands. Or modulate on your own with IR LED and IR photodiode.

- Use a Zigbee chip. (similar to Bluetooth concept, but even lower power, designed for limited update rates).

- Check with robotics enthusiasts. They need similar devices all the time.

How do you program a mobile phone's J2ME for seding SMS messages?

this is the code to send sms using J2ME programing language.

------------------------------------------------------------------------------------------------------------

/*

* @(#)SMSSend.java 1.8 04/03/22

*

* Copyright (c) 1999-2004 Sun Microsystems, Inc. All rights reserved.

* PROPRIETARY/CONFIDENTIAL

* Use is subject to license terms

*/

package example.sms;

import javax.microedition.midlet.*;

import javax.microedition.io.*;

import javax.microedition.lcdui.*;

import javax.wireless.messaging.*;

import java.io.IOException;

/**

* An example MIDlet to send text via an SMS MessageConnection

*/

public class SMSSend extends MIDlet

implements CommandListener {

/** user interface command for indicating Exit request. */

Command exitCommand = new Command("Exit", Command.EXIT, 2);

/** user interface command for proceeding to the next screen */

Command okCommand = new Command("OK", Command.OK, 1);

/** current display. */

Display display;

/** The port on which we send SMS messages */

String smsPort;

/** Area where the user enters the phone number to send the message to */

TextBox destinationAddressBox;

/** Error message displayed when an invalid phone number is entered */

Alert errorMessageAlert;

/** Alert that is displayed when a message is being sent */

Alert sendingMessageAlert;

/** Prompts for and sends the text message */

SMSSender sender;

/** The last visible screen when we paused */

Displayable resumeScreen = null;

/**

* Initialize the MIDlet with the current display object and

* graphical components.

*/

public SMSSend() {

smsPort = getAppProperty("SMS-Port");

display = Display.getDisplay(this);

destinationAddressBox = new TextBox("Destination Address?",

null, 256, TextField.PHONENUMBER);

destinationAddressBox.addCommand(exitCommand);

destinationAddressBox.addCommand(okCommand);

destinationAddressBox.setCommandListener(this);

errorMessageAlert = new Alert("SMS", null, null, AlertType.ERROR);

errorMessageAlert.setTimeout(5000);

sendingMessageAlert = new Alert("SMS", null, null, AlertType.INFO);

sendingMessageAlert.setTimeout(5000);

sendingMessageAlert.setCommandListener(this);

sender = new SMSSender(smsPort, display, destinationAddressBox,

sendingMessageAlert);

resumeScreen = destinationAddressBox;

}

/**

* startApp should return immediately to keep the dispatcher

* from hanging.

*/

public void startApp() {

display.setCurrent(resumeScreen);

}

/**

* Remember what screen is showing

*/

public void pauseApp() {

resumeScreen = display.getCurrent();

}

/**

* Destroy must cleanup everything.

* @param unconditional true if a forced shutdown was requested

*/

public void destroyApp(boolean unconditional) {

}

/**

* Respond to commands, including exit

* @param c user interface command requested

* @param s screen object initiating the request

*/

public void commandAction(Command c, Displayable s) {

try {

if (c '+') {

startPos = 1;

}

for (int i = startPos; i < chars.length; ++i) {

if (!Character.isDigit(chars[i])) {

return false;

}

}

return true;

}

}

Is your husband cheating if a message on his cell phone ends with love you and he has promised to stop having contact with this lady and he lied about it?

yes!!!!! sorry but very much so...

ANSWER:

Unfortunately he didn't do what he promised he will do. It's time for you to do something about the situation, talk to your husband and tell him what you wanted from him and if he can't do them, you need to make the hardest decision in your life. No one deserve what your husband is doing to you. Stop it or let him go..

When a phone is unlocked is it the card or the phone that is unlocked?

It is the phone itself. SIM cards are peculiar to GSM phones. There are other types that do not use a SIM card. The SIM card carries information that is specific to the subscriber. All phones have operating software. Some of the software is common to all phones, regardless of who the carrier is. Some portions of the programming are reserved for the carrier. An example of this would be the banner the user sees when the phone is powering up, but there is a lot of programming that is transparent to the user, which is protected by the lock.