If you need an illustration of the accelerating speed of technological change, look no further than the electronic calculator, that modest little device that does the most complex sum instantly and that you hold in the palm of your hand. Now ensure to watch to the end of this video as we delve into the full history of the calculator, from the Abacus first used by Egyptians in 2000 BC. to the pocket calculator and smartphone of today. The history and Evolution of Scientific Calculator 2,000 BCE - The Abacus. The first calculator was known as an abacus, a hand operated mechanical calculator that used beads and rods. It was first used by the Egyptians around 2000 BC. 1642 - Pascal's calculator. The first mechanical calculator appeared in 1642. It was invented by the French mathematician Blaise Pascal. The device used gears and could add, subtract, multiply, and divide. 1620 - The slide rule. The slide rule was invented around 1620–1630, shortly after John Napier's publication of the concept of the logarithm. In 1620 Edmund Gunter of Oxford developed a calculating device with a single logarithmic scale. ▶️ Ad - I make not Less than $1.5k 💰 on YouTube Monthly with this - https://www.tubebuddy.com/Oralcomple 1673 - Stepped reckoner. The step reckoner (or stepped reckoner) was a digital mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz around 1673 and completed in 1694. 1690 - Napier's bones. John Napier, the inventor of logarithms, also invented this aid to calculation known as 'Napier's Bones' in 1617. The 'bones' consist of a set of rectangular rods. 1820s - Difference engine. Difference Engine, an early calculating machine, verging on being the first computer, designed and partially built during the 1820s and '30s by Charles Babbage. 1885 - Comptometer. The Felt and Tarrant Comptometer was invented by my great grandfather , Dorr E. Felt, in 1885 . It was the first push button calculator . The comptometer received its first patent and was put on the market in 1887. 1930s - Curta. The Curta of Curt Herzstark (see biography of Curt Herzstark) is a remarkable mechanical calculator, based on the stepped drum mechanism of Lebnitz. 1961 - ANITA. The first all-electronic desktop calculator was invented in 1961 in Britain by Control Systems Ltd. It was called ANITA (A New Inspiration To Arithmetic/Accounting). 1985 - Casio, graphing calculator. The world’s first graphing calculator was invented in 1985 by Casio. 1993 - Calculators in Cell Phones. In 1993 IBM Simon invented the Personal Communicator. It was a cell phone with an added PDA functions like email, calendar, and a calculator. 2016 - Till Today. In the mid 2000s, many of the modern smart phones were introduced and with them came a new way of calculation. Calculators are now in every phone, every tablet, and in every app store. 👉 Watch more videos on Evolution -    • Evolution   👉 Evolution Of Spacesuits - https://www.youtube.com/watch?v=l7gBJUutFIw 📺 SUBSCRIBE - https://www.youtube.com/channel/UCCa9ktli6ci_oWc07t6o_JQ If you found value in this video, Kindly like this video and share it with your friends. If you are new here, subscribe to this channel and turn on notifications so that you will receive our videos immediately we upload. Thanks for watching. ▶️ Best Tool I use for this channel - https://www.tubebuddy.com/Oralcomple