A telegram is a short message service sent by electrical wire systems.
Telegrams were frequently used to share emergency messages within a short period.

2.What Is a Touchscreen?

A touch screen has a touch sensor which appears like a colourful display.
We can operate a touch screen by tapping the screen with our fingertips.

3.Name a Few E-mail Providers.

A few e-mail providers are Google, Hotmail, Rediff and Yahoo.

4.Why Do We Use Stamps on Letters?

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Different parts of a helicopter are:

Stamps bought from post offices are pasted on letters before posting.
A pre-paid postal charge to the postal service is paid when we buy a stamp necessary for using the postal services.

5.What Is the Difference Between LCD and LED Television?

The differences between LCD and LED television are as follows:

LCD Television	LED Television
1. The full form of LCD is a Liquid crystal display.	1. The full form of LED is Light emitting diode.
2. LCD screen televisions are thicker.	2. LED screen televisions are slimmer.
3. Visual output is moderate.	3. Visual output is better than LCD television

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