Worksheet
Date :
Name :
32
Writing
Write a short paragraph describing your father's/mother's mobile phone. The following points may be
useful to you.
Hints
Brand name.......... Colour..
Colour..........Screen size.......... Operating system..... Features etc.
Answers
Answer:
In todays world of computerization, you must have heard a lot about programming. Programming refers to a process which carries out a set of instructions to do a particular task. Presently, programming is extended beyond computers to various application systems, one such application system is Communication Devices, which covers telephone exchanges like PBX (Private Branch eXchange), ISDN (Integrated Services Digital Network), Networking Devices like switches, router and terminal devices like ISDN phone, modems, mobile phones, and so on. Programming these devices is quite challenging in their own way as they involve challenging requirements like real time processing, multi-device handling, enormous features, friendly GUI, and so on. We in this unit have chosen smartphone – a mobile phone variant as an example to describe the programming aspects associated with its functioning.
In this unit, we will discuss as to what a Smartphone is and also its features that has made it so popular. We will also discuss about the Smartphone operating systems. You will find the necessity for an operating system in Smartphones and the characteristics that these operating systems support. You can easily relate many of the concepts to the mobile phone that you or your acquaintances might be using.
Mobile phone usage has increased manifold over the past decade. ,A mobile phone (also called as cellular phone, cell phone or hand phone) is an electronic device which facilitates two-way telecommunications over a cellular network of base stations, or cell sites. A general classification of mobile phones based on features are: One is Feature phones, or low end phones, which offer basic services like making and receiving calls, radio (FM) services, and sending or receiving Short Message Services (SMS). The other is Smart phones, which offer more advanced technology, like connection to the World Wide Web (www), sending Multimedia Message Services (MMS), accessing Bluetooth and infrared applications, playing audio and video files, providing GPS functions etc,. Bluetooth is a wireless technology used to exchange data by connecting devices within short distance. Infrared is a wireless technology used to exchange data by connecting two electronic devices.
A Smartphone is a remarkable invention; it is a mobile phone with more offerings that fits in your pocket and lets you communicate from anywhere in the world. The primary difference between mobile phones and Smartphones is that the Smartphones have complete operating software, which provides a standardized interface and platform for application developers.
Smartphones are like laptops or miniature computers, and can perform a variety of functions. As the Smartphones have operating software and a standard interface, the users have the ability to add applications and upgrade features and services on their mobile phones.
Let us see how Smartphones evolved. Today, with technological advancement, the Personal Computer (PC) is a part of everyday life as a productivity, entertainment, and communication device. Like laptops the Personal Digital Assistant (PDA) were introduced as mobile computing devices with less memory capacity. These PDAs, also known as handheld computers or palmtops, are electronic organizer or planner that can easily share any information with the computer. It is basically a high end organizer phone.
The concept of Smartphone is obtained from the PDAs and mobile phones. Initially, PDAs were developed to access Internet while mobile phones were meant to receive calls, send messages, etc, Then the Smartphone was invented which had the ability to fit more functionality into a smaller device. Smartphones are a combination of the functionalities of mobile phone as well as the features of PDA.
Like most inventions, Smartphones are built on a chain of prior technological advancements of semiconductor miniaturization, battery technology, display devices, touch panels, and the invention of telephone and wireless technology. We will be touching upon the features of Smartphone in detail in the subsequent sections.
hope it helps....