SIM card or a CPU

The SIM cards in cellular telephones might be smaller than a postage stamp and less than a millimeter thick but that hasn't stopped South Korea's SK Telecom from cramming all the major components needed to run Google's Android OS inside one of them.

The carrier's Android SIM, a prototype of which is on show at this week's Mobile World Congress in Barcelona, includes an ARM-based processor, companion memory and 1GB of flash memory to store the OS and other data.

SK Telecom envisages such a SIM card could be used between a number of "dumb" terminals -- devices that have ancillary peripherals such as a screen and keyboard but lack a processor and pre-installed OS. The SIM card uses the USB 2.0 interface to communicate with the terminal.

All of the user's applications and data are stored alongside the OS in the SIM card, so the user's desktop could be transported between devices by switching the SIM card between them. For example, a PC desktop could be switched into a cell phone for a commute.

SK Telecom said it's only a prototype at present and there are no plans to bring it to market but its development shows the level of miniaturization and amount of hardware that can be crammed inside a cell phone SIM card.

In April the carrier, which is South Korea's largest mobile operator, will roll out a series of customized SIM cards preloaded with applications and other data. Several "smart SIM" cards are being demonstrated at Mobile World Congress. They include a financial SIM that includes an application to monitor markets, a SIM branded by a pop group that includes their music videos and a sports-themed SIM from a soccer club.

SK Telecom is also experimenting with a SIM card with built-in wireless electronic money function. The card could be used to add wireless e-payment to handsets that don't have such a feature built-in.

Also this week at Mobile World Congress, SIM card-maker Sagem Orga showed off its SIMFi -- a SIM card with built-in Wi-Fi hotspot so that computers and other devices can connect to the Internet through the SIM card and phone's wireless connection.

Print "Hello World" in a Mobile Phone Using J2ME

Print "Hello World" in a Mobile Phone Using J2ME

Use a simulator to see the output:

import javax.microedition.midlet.*;

import javax.microedition.lcdui.*;

public class HelloWorld extends MIDlet implements CommandListener {

    private Command exitCommand;

    private TextBox tbox;

    public HelloWorld() {

        exitCommand = new Command("Exit", Command.EXIT, 1);

        tbox = new TextBox("Hello world MIDlet", "Hello World!", 25, 0);

        tbox.addCommand(exitCommand);

        tbox.setCommandListener(this);

    }

    protected void startApp() {

        Display.getDisplay(this).setCurrent(tbox);

    }

    protected void pauseApp() {}

    protected void destroyApp(boolean bool) {}

    public void commandAction(Command cmd, Displayable disp) {

        if (cmd == exitCommand) {

            destroyApp(false);

            notifyDestroyed();

        }

    }

}

SANDISK G3 SOLID STATE DRIVE

While other industry leaders are showing off their new ventures and inventions, SanDiskjoined the party by unveiling its new G3 series solid-state hard drives (SSD) designed particularly as drop-in replacements for conventional hard disk drives in netbooks and notebooks. The famous flash memory card maker promised that this so called world’s fastest multi-level cell SSDs are more reliable and more resilient besides running 5 times faster that the industry’s current HDD and double the speed of SSDs unveiled in 2008.

SanDisk’s new G3 series SSDs come in three different sizes: 60GB, 120GB and 240GB. The prices for each respective size are as follows: 60GB for $149, 120GB for $249 and 240GB for $499. This price range is on the high side compared to existing HDDs. However, these new technology drives are gaining popularity and increasingly being used as a storage device in laptops and other electronic devices due to their speed and reliability. Since there are no moving parts in them, the drives themselves are more rugged and consume less power.

“We think that this is a major inflection point,” said SanDisk chairman and CEO Eli Harari. “To date, solid state drives (SSDs) have been largely confined to low-capacity netbooks. But SanDisk’s G3 SSDs have enough capacity to be used in full-fledged notebooks as well — 60GB ($149), 120GB ($249) or 240GB ($499). At those prices, many of us will switch to solid state notebooks that boot in seconds”.