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2. IBM 604 - Wikipedia

   en.wikipedia.org/wiki/IBM_604

   IBM 604 Electronic Calculator at NEMO national science museum in Amsterdam. Note plugboard control panel used to program the 604, at bottom. The IBM 604 Electronic Calculating Punch was the world's first mass-produced electronic calculator along with its predecessor the IBM 603 . [ 1 ]

3. Victor Technology - Wikipedia

   en.wikipedia.org/wiki/Victor_Technology

   PL8000 - The PL8000 is a 3.2 lb white calculator with a 2 color backlit 14-digit 17mm dot matrix display. It can do cost/sell/margin, currency, installment loans and time calculations and it has a 8 lines-per-second (lps) thermal printer which prints on 2 1/4" thermal paper. It includes PROMPT LOGIC™ and a HELP key which guides the user with ...

4. IBM 608 - Wikipedia

   en.wikipedia.org/wiki/IBM_608

   The IBM 608 Transistor Calculator, a plugboard-programmable unit, was the first IBM product to use transistor circuits without any vacuum tubes and is believed to be the world's first all-transistorized calculator to be manufactured for the commercial market. [1] [2]: 34 Announced in April 1955, [3] [4] it was released in December 1957. The 608 ...

5. Casio graphic calculators - Wikipedia

   en.wikipedia.org/wiki/Casio_graphic_calculators

   Announced for January 2011, these models have a high-resolution color display (396×224 screen with 384×216 pixels (21×8 characters) window [3] with 2 16 colors), a USB 2.0 port, 16 MB of flash memory and a feature called Picture Plot. [4] The Prizm is permitted on all major standardized tests including ACT, SAT, AP, GCSE and GCE examinations ...

6. List of free electronics circuit simulators - Wikipedia

   en.wikipedia.org/wiki/List_of_free_electronics...

   List of free analog and digital electronic circuit simulators, available for Windows, macOS, Linux, and comparing against UC Berkeley SPICE. The following table is split into two groups based on whether it has a graphical visual interface or not.

7. Mechanical calculator - Wikipedia

   en.wikipedia.org/wiki/Mechanical_calculator

   The second one was a programmable mechanical calculator, his analytical engine, which Babbage started to design in 1834; "in less than two years he had sketched out many of the salient features of the modern computer. A crucial step was the adoption of a punched card system derived from the Jacquard loom" [12] making it infinitely programmable ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Chopper (electronics) - Wikipedia

   en.wikipedia.org/wiki/Chopper_(electronics)

   Step down chopper Step up chopper Range of output voltage: 0 to V volts: V to +∞ volts Position of chopper switch: In series with load: In parallel with load Expression for output voltage: VL dc = D × V volts: V o = V/(1 – D) volts External inductance: Not required: Required for boosting the output voltage Use: For motoring operation, for ...