Mobile Phones Essay

Introduction

In the past, mobile technology is the technology used mostly for communication. Since the start of the year 2000, a simple two-way pager has been replaced by a standard mobile phone. The mobile device had a number pad including pick-up and hang-up button as well as a digital phone book to store the phone numbers which offered convenience for users but not much more.

Now smartphone fully-developed computers that you could fit into your pocket. In term of smartphone function, they can run GPS navigation device, web browser, instant messaging, games, send email, take a photo and so on. Meanwhile, smartphones have changed the design from number pad to touchscreen control. When the users want to make a call, a number pad will pop up

Smartphones are made by every major phone manufacturer like Samsung, Apple, Oppo, Huawei, LG, HTC, Nokia and etc. And, the types of OS: Android, BlackBerry OS, WebOS, iOS, Symbian, Windows Mobile Professional (touchscreen), Windows Mobile Standard (non-touch screen), and Bada. Many mobile phones have a common feature because they all use a small amount of operating system. The operating system on the smartphone is very similar to the operating system on the computer: it is the underlying software that runs all the other functions. Like a Windows or Macintosh operating system on a PC, the smartphone also has an operating system on the phone.

Hardware

There have some of the hardware components of smartphone and cannot be missing, each of the hardware components is important for simulate such as:

1. Processors 5. Connectivity & Sensors

2. Graphics 6. Batteries

3. Memory & Storage 7. Speaker

4. Displays (Touchscreen) 8.

Palm OS's iconic feature is simple to operate, although the 5.4 version of the integration of more new features, it is as simple as the previous version. You want to run a program, just click on its icon; you want to enter the data directly on the screen using the touch pen can be written, or click on the screen analogy keyboard. On the Palm OS, everything is very logical and simple.

Palm OS uses a single thread, at the same time can only run a program, which is some of the supporters appreciate the reasons, but also the shortcomings of the eyes of critics. Palm does not have to shut down the program as a desktop computer, only need to change from one program to another program the main thing Palm OS will never be buried in the memory of some of the dilemma.

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