It used a CRT (cathode ray tube ) television tube - type of display and was also one of the first fully electronic calculators in the world.ġ964 - In March, Japan's Sony Corporation claims to perfect the world's first all-transistorized (no vacuum tube) desk-top electronic calculator. The USA, the Friden 130 was released at about the same time. Although the Anita is as large as many mechanical models, it is a major breakthough since it is silent (no moving parts) and very fast. Vacuum tubes (called valves in England) along with hundreds of other discrete components. The machine weighs 33 pounds and uses dozens of LTD and Sumlock-Comptometer LTD of England introduce the "Anita" which is claimed to be the world's first fully electronic desk-top calculator. One mechanical model made by Friden is actually able to use gears and levers to extract square roots.ġ963 - Bell Punch Co. They are called calculators rather than adding machines because complex gear systems allow them to perform multiplication and division by repetitive addition or Mechanical adding machines with no other electronic parts. As was true in the 1940's and 1950's, early 1960's calculators are complicated motor-assisted 1960's Sowing the seeds of the calculator revolutionĮarly 1960's - Mechanical calculators, slide rules, or paper and pencil are the world's main methods of calculation.
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