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I seems more like a delay line than real memory and it really was dynamic RAM. I am struggling to understand the memory. Several comments though (what else is new?) How about you? Do you long for the retro look and feel of these old calculators, or are you just happy you don’t have to use one yourself? I would love to have one of these little beauties in my own humble collection. In reality, this was a coil of piano wire into which pulses/vibrations were inserted in one end and read out of the other you have to see it to believe it! And, speaking of memory, the video shows the Friden EC-132’s main storage, which was implemented using something called recirculating audio acoustic memory. 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. SEARCH 1,000,000's of Antiques, Art, Mid-Century, Vintage & RARE Collectors' items. 1,000,000's of Antiques, Art, Vintage and RARE Collectibles.
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Plus TODAY's SELECTED Singer Friden Electronic Calculators for Sale,Īrt, Antiques, Mid-Century, Vintage & RARE Collectors' items. FIND 1000's of Antiques, Art, Vintage & RARE Collectibles - each item pictured, described and with it's sale price guide. Singer Friden Electronic Calculators Sale Prices / Valuesīrowse FREE Singer Friden Electronic Calculators Sale Prices & Values. Home > Antique Sale Prices > Singer Friden Electronic Calculators