Computers take numerous physical forms.Early electronic computers were the size of a large room,consuming as much power as several hundred modern personal computers.[1] Today,computers can be made small enough to fit into a wrist watch and be powered from a watch battery.Society has come to recognize personal computers and their portable equivalent,the laptop computer,as icons of the information age; they are what most people think of as "a computer".However,the most common form of computer in use today is by far the embedded computer.Embedded computers are small,simple devices that are often used to control other devices—for example,they may be found in machines ranging from fighter aircraft to industrial robots,digital cameras,and even children's toys.
In recent years,many newspapers and magazines focus on the activities of film stars,pop singers and some other famous men and women.Reporters disguise their identities,infiltrate the subject's business and family,or even bug and wiretap them——to get the news by whatever means are necessary.
It is not difficult to explain the reason for their surprising amount of interest in famous people's lives.They are in the spotlight,renowned or notorious,they are the topic of ordinary people who like to know everything about them.To satisfy their curiosity,or “the people's right to know”,journalists often find it their duty to report their activities.
More over,what matters to a newspaper or a magazine is the number of readers.A large readership means the rise in the circulation of their publications,hence a huge profit.Since film stars and pop singers are newsworthy figures,and their stories draws far more attention than those of other people,it is natural that the press tries to attract them to buy their magazines by featuring private lives of famous people.
How ever,those exposed people can be severely injured by such press attention.Sensational stories about their private lives cause great unhappiness to them.To escape reporters,they can't even lead a normal life.Sometimes their lives will be in danger.For example,Princess Diana died in a car accident as she attempted to escape photographers in a chase through Paris.
Famous people are also citizens.They have the right to keep their own privacy like ordinary people——the basic right which should be respected,protected and guaranteed by our laws in whatever circumstances.
A computer in a wristwatch.The ability to store and execute programs makes computers extremely versatile and distinguishes them from calculators.The Church–Turing thesis is a mathematical statement of this versatility:Any computer with a certain minimum capability is,in principle,capable of performing the same tasks that any other computer can perform.Therefore,computers with capability and complexity ranging from that of a personal digital assistant to a supercomputer are all able to perform the same computational tasks so long as time and storage capacity are not considerations.