![]() Watching this video provides a nostalgic trip down memory lane. The basic operations of addition, subtraction, multiplication, and division occur almost instantly, but performing a square root operation takes about a second (you may laugh, but this is a lot faster than doing it by hand). There’s also the use of Reverse Polish Notation (RPN), which greatly eased the task of performing operations when you had limited memory and processing power. At first, you think there are four (strangely thick) boards, but then you discover that each of these four assemblies comprises two boards “folded over” resulting in a sort of 4-layer board.Īnd then there’s the cathode ray tube (CRT) that’s used to display the input values and the results. ![]() I love seeing the circuit boards populated with individual transistors, diodes, resistors, and capacitors. ![]() This was one of the very early commercially-available solid-state desktop electronic calculators. Created in the early 1960s, the Friden EC-132 is a thing of beauty and a wonder to behold.
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