Category: History

2010

• May 1
  HP 12c - 30th Anniversary

2008

• Dec 1
  HP 35 Calculator Unearthed

2007

• Jul 12
  HP Calculators pays homage to legendary HP-35
• Jul 6
  HP 35s Scientific Calculator

2006

• Jul 11
  HP 12c - 15 million units later
• Apr 4
  HP Labs honor HP 35

2004

• Oct 26
  HP 33s Scientific RPN Calculator

2002

• Sep 14
  How to use an Abacus

1987

• Oct 2
  Slide Rule Still Rules

1986

• Jun 26
  HP 18c Business Consultant

1984

• Oct 16
  HP 41c Handheld Computer

1983

• Dec 27
  HP 41CX Alphanumeric Handheld Computer
• Jan 7
  HP-15C and HP-16C Engineering Calculator

1982

• Dec 27
  HP 16c Computer Scientist Calculator
• Dec 14
  The HP’s Slim-line Series 10 Programmable
• Dec 2
  HP 10C Basic Scientific Programmable Calculator
• Aug 26
  HP 41 with Time and Display Module

1981

• Oct 16
  HP 12c Financial Calculator
• Jun 19
  HP 41CV - The Professional Alternatives
• Mar 22
  HP 11C Programmable Calculator

1979

• Nov 29
  HP 34c Scientific Calculator
• Nov 28
  Professor William Kahan (The original HP35)

1978

• May 8
  HP 38E Financial Calculator

1977

• Dec 12
  HP 01 Wrist Calculator
• Oct 21
  HP Calculator Heritage Ads 1977 - HP 01
• Sep 7
  HP 19C Scientific Printing Programmable Calculator
• Jul 15
  HP 29C Scientific Programmable Calculator
• Jun 25
  HP-97 Printing Calculator

1976

• Dec 12
  HP 97 Printing Calculator
• May 12
  HP Calculator Heritage Catalog 1976 Page 528
• May 12
  HP Calculator Heritage Catalog 1976 Page 527
• May 12
  HP Calculator Heritage Catalog 1976 Page 526
• May 12
  HP Calculator Heritage Catalog 1976 Page 525
• May 12
  HP Calculator Heritage Catalog 1976 Page 524
• May 12
  HP Calculator Heritage Catalog 1976 Page 523
• May 12
  HP Calculator Heritage Catalog 1976 Page 521
• May 12
  HP Calculator Heritage Catalog 1976 Page 520
• May 12
  HP Calculator Heritage Catalog 1976 Page 519

1975

• Sep 23
  HP 25 Scientific Programmable
• May 12
  HP Calculator Heritage - The HP Way
• May 6
  HP 27 & HP 91
• May 3
  HP 21 Scientific

1974

• Oct 21
  HP Calculator Heritage Ads 1974 - HP 65
• Sep 24
  The HP 70 Business
• Apr 10
  HP 55 Programmable Scientific
• Jan 12
  HP 65 Programmable Pocket Calculator

1973

• Dec 28
  HP 80 Business Calculator
• Dec 12
  HP 45 Advanced Scientific Pocket Calculator
• Oct 17
  HP Calculator Heritage Ads 1973

1972

• Dec 28
  HP 35
• Jun 10
  HP Calculator Heritage Printed Ads 1972
• Apr 4
  Dr. Dennis R. Clark with his HP-35
• Jan 1
  HP Calculators Timeline

1971

• Dec 28
  Bowmar - First Electronic Calculator Made In USA

1947

• Nov 4
  Curt Herzstark - Mini Curta

1902

• Nov 4
  Dalton Adding Machine

1800

• Sep 2
  Who was Leon Bollee?
• Sep 1
  Leon Bollee - Millionaire Calculator
• Aug 1
  G. Charpentier - Circular Slide Rule
• Jul 1
  William S. Burroughs - Burroughs Calculating Machine
• Jun 1
  Dorr Eugene Felt - Comptometer
• May 1
  Ramón Silvestre Verea - Adding Machine
• Apr 1
  Victor Mayer Amedee Mannheim - Modern Slide Rule
• Mar 1
  Georg Scheutz - The First Printing Calculator
• Feb 1
  Charles Babbage - Difference Engine
• Jan 1
  Charles Xavier Thomas - Arithmometer

1700

• Jan 1
  Gottfried Wilhelm von Leibniz - Mechanical Calculator

1600

• Apr 1
  Blaise Pascal - first digital calculating machine
• Mar 1
  William Gunter - Calculating Device
• Feb 1
  William Oughtred - The Inventor of the Circular Slide Rule
• Jan 1
  John Napier - The Napier Bone

1500

• Jan 1
  Leonardo da Vinci - The First Mechanical Calculator

1200

• Jan 1
  The Abacus

0001

• Dec 31
  Antikythera Mechanism from the 1st century BC
• Jan 1
  History of Calculators