HSDPA, short for High-Speed Downlink Packet Access, is a new protocol for mobile telephone data transmission. It is known as a 3.5G technology.

HSDPA  standard will provide download  speeds on a mobile phone  equivalent to an ADSL  (Asymmetric Digital Subscriber Line) line in a home, removing any limitations placed on the use of your phone by a slow connection.

HSDPA improves the data transfer rate by a factor of at least five over W-CDMA. HSDPA can achieve theoretical data transmission speeds of 8-10 Mbps (megabits per second). Though any data can be transmitted, applications with high data demands such as video and streaming music are the focus of HSDPA.

Pager: A Pager is a FM radio receiver electronic device.
A pager (sometimes called a beeper) is a simple personal telecommunications device for short messages. A one-way numeric pager can only receive a message consisting of a few digits, typically a phone number that the user is then expected to call. Alphanumeric pagers are available, as well as two-way pagers that have the ability to send and receive email , numeric pages, and SMS messages.

Paging was invented by Multitone Electronics in 1956 at St Thomas’ Hospital in London to alert doctors attending emergencies. Over subsequent decades, paging has evolved in technological sophistication.

Who discovered natural radioactivity

Ans : Hentry Bequeral

Hydrogen was discovered by

Ans : Cavendish

Who invented Microprocessor

Ans : Ted Hoff

Name the scientist who proposed Doppler Effect

Ans : Christian Doppler

Who discovered Argon

Ans : Ramsay

Name the scientist who proposed pH value

Ans : Sorenson

Who discovered the Law of Gravitation

Ans : Sir Isaac Newton

Who discovered penicillin

Ans : Alexander Fleming

Who invented dynamite

Ans : Alfred Nobel

Pager: A Pager is a electronic device with FM radio receiver  which is useful for communication purpose.  Paging service has now popular with the introduction of statelite base stations.

A pager (sometimes called a beeper) is a simple personal telecommunications device for short messages. A one-way numeric pager can only receive a message consisting of a few digits, typically a phone number that the user is then expected to call. Alphanumeric pagers are available, as well as two-way pagers that have the ability to send and receive email , numeric pages, and SMS messages.

Paging was invented by Multitone Electronics in 1956 at St Thomas’ Hospital in London to alert doctors attending emergencies. Over subsequent decades, paging has evolved in technological sophistication.