Nov 14, 2011

Dream Akhi congratulates Googles doodle India Winner "Varsha Gupta"


Keeping with the tradition of celebrating landmark occasions, the search engine giant has yet another doodle on its homepage today.
Today's Google homepage greets you with a colourful doodle of a bunch of musical instruments.
The doodle celebrating Children's Day is the brainchild of Varsha Gupta, a Class Three student of Ryan International School in Greater Noida.
Gupta was recently chosen as winner of the Doodle 4 Google competition that Google organised.
The search engine had announced that it would put the winning entry on its India homepage on Children's Day -- November 14.
On the Google 4 Doodle site Gupta explains her creation in these words:
"India is a land of different cultures. In India Music plays a very important role. India has given many musical instruments to the world. Example:  Tabla, Sarod, Veena, Shehnai etc.
Goddess Saraswati plays Veena, God Shiv plays damaru. According to our mythological stories musical instruments used to be played on all the occasions.
Even during war musical instruments were played. Lord Krishna's flute is known in the whole world for its magical music. In modern days Zakir Hussain is world famous as Tabla Mastro. Pandit Shiv Kumar Sharma is known as a great Santoor player all over the world."
The theme of the competition was India's gift to the world and was open to students from Class 1 to Class 10 with the winner walking hope with a laptop, Internet connection for a year and a technology grant of Rs 2,00,000 for his/her school.
From over 1,55,000 entries 6000 doodles were longlisted following which faculty from the Sir JJ School of Arts shortlisted 600 doodles that made it to the semifinal round.
A panel of judges including artist Ganga Kadakia, actress Nandita Das and adman Prasoon Joshi picked the 45 finalists while Jennifer Hom, from Google's doodle team, chose the winning doodle.
India celebrates the birthday of Pt Jawaharlal Nehru's as Children's Day.

Nov 4, 2011

BINARY NUMBER AND UNITS, DATA CONVERSIONS

The metric system


In some cases when used to describe data transfer rates bits/bytes are calculated as in the metric system as follows:

  • 1 MB = 1,000,000 bits/bytes
  • 1 kb = 1,000 bits/bytes
  • 1 bit/byte
The period (.) is used as decimal separator.

The calculations is based on:

In the cases when used to describe data storage bits/bytes are calculated as follows:

  • 1 byte = 8 bits
  • 1 kilobyte (K / Kb) = 2^10 bytes = 1,024 bytes
  • 1 megabyte (M / MB) = 2^20 bytes = 1,048,576 bytes
  • 1 gigabyte (G / GB) = 2^30 bytes = 1,073,741,824 bytes
  • 1 terabyte (T / TB) = 2^40 bytes = 1,099,511,627,776 bytes
  • 1 petabyte (P / PB) = 2^50 bytes = 1,125,899,906,842,624 bytes
  • 1 exabyte (E / EB) = 2^60 bytes = 1,152,921,504,606,846,976 bytes
The period (.) is used as decimal separator.

Data Transmission conversion (kilobit):

In data communications, a kilobit is a thousand bits, or 1,000 (103) bits. It's commonly used for measuring the amount of data that is transferred in a second between two telecommunication points. Kilobits per second is usually shortened to Kbps.
Some sources define a kilobit to mean 1,024 (that is, 210) bits. Although the bit is a unit of the binary number system, bits in data communications are discrete signal pulses and have historically been counted using the decimal number system. For example, 28.8 kilobits per second (Kbps) is 28,800 bits per second. Because of computer architecture and memory address boundaries, bytes are always some multiple or exponent of two.