HP-35

HP-35 was a groundbreaking scientific calculator developed by Hewlett-Packard in collaboration with Intel, Texas Instruments, and other industry leaders, including Jack Kilby and Robert Noyce. The HP-35 was announced in Early 1972 and was the first pocket-sized calculator to perform trigonometric and exponential functions, making it an essential tool for engineers, scientists, and mathematicians, such as Isaac Newton, Albert Einstein, and Stephen Hawking. This innovative device was designed by a team of engineers, including Bill Hewlett and Dave Packard, who were influenced by the work of Konrad Zuse and John von Neumann. The HP-35 was also used by notable figures like Neil Armstrong and Buzz Aldrin during the Apollo 11 mission.

Introduction

The HP-35 was a significant breakthrough in the field of calculators, offering a range of advanced features, including trigonometric functions, logarithmic functions, and statistical functions, which were previously only available on large mainframe computers, such as the IBM System/360, developed by IBM and used by NASA. The device was designed to be portable and user-friendly, making it accessible to a wide range of users, from students at Massachusetts Institute of Technology and California Institute of Technology to professionals in fields like medicine, finance, and engineering, including Henry Ford and Thomas Edison. The HP-35 was also influenced by the work of Charles Babbage and Ada Lovelace, who are considered to be the pioneers of computer science. The device was widely used by researchers at CERN and Los Alamos National Laboratory, and was also used in various space missions, including the Voyager 1 and Voyager 2.

History

The development of the HP-35 began in the late 1960s, when Hewlett-Packard started exploring the possibility of creating a portable calculator that could perform advanced mathematical functions, similar to the ENIAC and UNIVAC I computers. The project was led by a team of engineers, including Tom Osborne and Dave Cochran, who worked closely with Intel and Texas Instruments to develop the necessary integrated circuits and microprocessors, such as the Intel 4004 and Texas Instruments TMS0100. The HP-35 was announced in Early 1972 and was released to the public in July 1972, with an initial price of around $395, which is equivalent to around $2,500 today, adjusted for inflation using the Consumer Price Index developed by the Bureau of Labor Statistics. The device was widely adopted by professionals and students alike, and played a significant role in the development of the personal computer industry, including the creation of the Apple I and Apple II computers by Steve Jobs and Steve Wozniak.

Design_and_Development

The HP-35 was designed to be a compact and user-friendly device, with a keyboard layout that was optimized for ease of use, similar to the QWERTY layout developed by Christopher Sholes. The device featured a range of advanced functions, including trigonometric functions, logarithmic functions, and statistical functions, which were implemented using a combination of analog and digital circuits, designed by engineers at Bell Labs and Xerox PARC. The HP-35 also included a range of innovative features, such as a memory function that allowed users to store and recall complex calculations, similar to the memoization technique developed by Donald Michie. The device was powered by a set of batteries, which provided up to 10 hours of continuous use, and was also compatible with a range of accessories, including a printer and a plotter, developed by Epson and Hewlett-Packard.

Technical_Specifications

The HP-35 featured a range of advanced technical specifications, including a 12-digit display, a 4-function calculator with trigonometric functions, logarithmic functions, and statistical functions, and a memory function that allowed users to store and recall complex calculations, similar to the cache memory developed by IBM. The device was powered by a set of batteries, which provided up to 10 hours of continuous use, and was also compatible with a range of accessories, including a printer and a plotter. The HP-35 also featured a range of innovative design elements, including a compact and portable design, a user-friendly interface, and a durable construction, similar to the design principles developed by Dieter Rams at Braun. The device was widely used by researchers at MIT and Stanford University, and was also used in various industries, including aerospace, automotive, and finance, including NASA, General Motors, and Goldman Sachs.

Impact_and_Legacy

The HP-35 had a significant impact on the development of the personal computer industry, and played a major role in popularizing the use of calculators and computers in a wide range of fields, including science, engineering, and finance. The device was widely adopted by professionals and students alike, and was used by notable figures like Neil Armstrong and Buzz Aldrin during the Apollo 11 mission. The HP-35 also influenced the development of later calculators and computers, including the HP-65 and Apple II, developed by Steve Jobs and Steve Wozniak. Today, the HP-35 is recognized as a pioneering device in the history of computing, and is celebrated by museums and collectors around the world, including the Computer History Museum and the Smithsonian Institution. The device has also been recognized by awards and honors, including the National Medal of Technology and the IEEE Milestone, awarded by the National Science Foundation and the Institute of Electrical and Electronics Engineers.

Category:Calculators