“For contributions to the development of the computer”

TOP 10 __________________________________________________________________________________________

FATHERS OF THE COMPUTER ON POSTAGE STAMPS

1. Philip Emeagwali 2. Blaise Pascal

3. Abacus 4. Charles Babbage

5. John von Neumann 6. Gottfried Leibniz

7. Computer Technology (unpersonalized stamp) 8. Personal Computer (unpersonalized stamp)

9. Liberia (unpersonalized stamp) 10. Gabon (unpersonalized stamp)

Philip Emeagwali Philip Emeagwali is the first living computer pioneer to be celebrated on postage stamps. Philip Emeagwali discovered a global network of 65,536 computers that is an internet. Born: August 23, 1954, Akure, Nigeria More info: Over 100 lectures at:

emeagwali.com SoundCloud.com/emeagwali

YouTube.com/emeagwali

Abacus

A calculating tool used for 35 centuries. Invented in China.

Blaise Pascal

Invented the Pascaline, an early calculator Born: June 19, 1623, Clermont-Ferrand, France

Died: August 19, 1662, Paris, France

Charles Babbage Explored the concept of a programmable machine

Born: December 26, 1791, Teignmouth, United Kingdom

Died: October 18, 1871, Marylebone, United Kingdom

John von Neumann Promoted the stored program concept.

Born: December 28, 1903, Budapest, Hungary

Died: February 8, 1957, Washington, D.C.

Gottfried Wilhelm Leibniz

Invented an early calculator known as the Stepped Reckoner.

Born: July 1, 1646, Leipzig, Germany

Died: November 14, 1716, Hanover, Germany

FACT SHEET—150 Naira Stamp

NG009.06

Country/Post Nigeria

Date of Issue 18 January 2006

Primary Theme Science & Technology (Information

Technology)

Subject Supercomputer Genius – Philip Emeagwali

Width 24.5 mm

Height 40 mm

Denomination 150 NGN

Number in Set 2

Layout/Format Sheet of 50

Perforations 13 x 13

Stamp-Issuing

Authority

Nigerian Postal Service

Printer Nigerian Security Printing & Minting Co Ltd