Historical clue formulations

• Inventor of a 17th-century calculator — 2019-05-24
• Mechanical calculator pioneer — 2018-04-27
• Isabel of mathematics fame — 2016-09-15
• French mathematician Blaise — 2016-08-02
• "Pensées" philosopher — 2014-04-18
• He wrote "The heart has its reasons which reason knows nothing of" — 2007-06-30
• Pressure unit equal to one newton per square meter — 2004-09-19
• Computer language — 2003-11-19
• Mathematician Blaise — 2002-12-17
• "Essay on Conics" author — 2002-04-26
• Language named for a mathematician — 2001-10-07
• Pioneer in probability — 2000-11-05
• Probability pioneer — 1999-07-23
• Calculating machine inventor, 1642 — 1997-12-14
• French mathematician Blaise — 1997-11-03
• Programming language — 1996-03-02
• Computer language — 1995-03-30