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 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. 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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