the 41c, first introduced in 1979 was another
breakthrough for hp. highly programmable, with an extensive and expandable
feature set together with alphanumeric display and naming capability.
rather than dot matrix, the display is a segmented lcd with additional
segments so as to be able to display letters and a wide range of
punctuation and other symbols. programs and functions could be given names
and data input and output could be mixed with text. the user mode
meant that your own programs could be attached to the keyboard rather than
having to be called up by name.
the 41c has 63 registers' worth of storage. registers can be traded
with program steps so that between 200 to 400 fully-merged steps are
available. the initial setting is 46 program registers and 17 register
the unit is highly expandable. on the top there are four sockets for
expansion packs. these packs can have additional memory, rom programs or
allow connection of custom peripherals like the card reader and the bar
programmatically it was excellent. an extensive function catalog,
labels (global and local), subroutines (up to 6 deep), a wide selection of
conditional branches, loop control (isg, dse), flags, indirect addressing
and far easier debugging and editing due to the alphanumeric display of
the user manual introduces the machine thus,
the hp-41c and hp41-cv calculators represent a
totally new concept in the design of hewlett-packard calculators. in
fact, because of their advanced capabilities, these calculators can even
be called personal computing systems.
with so many kinds of calculator users and
applications in the world, we at hewlett-packard decided we could
provide a significant contribution by designing and building quality
calculators with expandable and flexible capabilities. the alphanumeric
hp-41c and hp-41vc calculators are the results of that decision.