Five useful tools:
1)Mobile phone :a lot of people changing and calling by mobile phone every day. Only the telephone companies disturbing us with theirs "traditional"calls every night.
2)Alarm clock: the most used technology every day, five days a week.
3)Remote control: the most important tool in many houses after dinner.
4) Microwave oven:the most important tool in many houses before dinner.
5) Laptop computer: today it works as good as PC but you carry it easily away.