Modules plus some other unique features like a Text Editor for ASCII files in extended memory. The HP-41CX then came out containing the capabilities of the HP-41CV plus the Time and Extended Functions With additional Extended Memory modules providing additional non-volatile storage on the machine. The Extended Functions module provided a RAM disk system allowing program and data files to be storedĪnd manipulated in extended memory (some of which was included in the module). Perhaps the most interesting HP produced modules were the Time module and the Extended Functions module.Īmongst other things the Time module allowed alarms to wake up the calculator and run programs allowingĪ control unit in data collection applications using inputs from devices connected to the HP-IL system. Programs on virtually every (mathematically based) subject you could think of. This left the other slots for ROM modules which could contain Video interfaces and a host of other peripherals The addition of the HP-IL interface loop allowed theĪddition of printers, digital cassette drives, plotters, multimeters, modems, A better solution came in the form of the HP-41CV which
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HP's first attempt at correcting this problem was the Quad memory module which allowed full expansion Printed programs from barcode or allow the addition of a magnetic card reader. The 4 expansion slots could be utilised to drive a printer or accept Were available allowing up to a maximum of 319 registers but doing so prevented the user adding Single memory modules adding blocks of 64 registers It had 63 registers which could be divided upīetween program space and storage space. The HP-41C was launched in 1979 and was a quantum leap over previous programmable calculatorsĭue to its alphanumeric capabilities and unique user interface.
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They sold in massive numbers, had vast software support, spawned user groups like HPCC and The HP41 series of calculators were considered by many people to be the ultimate calculator. Introduction Principal Features Emulators Availability Books Datafile Articles Linksĭescribed in one HP brochure as "Unsurpassed in terms of software,Įxpandability and versatility, these are the calculators that grow with your needs."
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