|
gptkbp:instance_of
|
gptkb:Graph_QL
|
|
gptkbp:accessories
|
gptkb:credit_card
gptkb:print
memory modules
|
|
gptkbp:availability
|
third-party software
|
|
gptkbp:battery_type
|
AA batteries
|
|
gptkbp:collectibility
|
high
|
|
gptkbp:community
|
active
|
|
gptkbp:community_events
|
workshops
online forums
competitions
conventions
user group meetings
|
|
gptkbp:design_date
|
1970s
|
|
gptkbp:dimensions
|
5.5 x 3.1 x 1.0 inches
|
|
gptkbp:discontinued
|
gptkb:1989
|
|
gptkbp:display_type
|
gptkb:LED
|
|
gptkbp:emulation
|
yes
|
|
gptkbp:features
|
modular design
|
|
gptkbp:function
|
gptkb:Graph_QL
|
|
gptkbp:historical_significance
|
first modular calculator
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
HP 41 series
|
|
gptkbp:influenced
|
subsequent HP calculators
|
|
gptkbp:influenced_by
|
HP 35
|
|
gptkbp:input_output
|
alphanumeric keypad
numeric and alphanumeric
|
|
gptkbp:interface
|
gptkb:HP-IL
|
|
gptkbp:legacy
|
yes
|
|
gptkbp:manufacturer
|
gptkb:Hewlett-Packard
|
|
gptkbp:market_segment
|
professional
|
|
gptkbp:notable_users
|
gptkb:engineers
gptkb:students
gptkb:scientists
hobbyists
programmers
|
|
gptkbp:performance
|
12 digits
|
|
gptkbp:programming_language
|
yes
RPL
|
|
gptkbp:provides_support_for
|
yes
|
|
gptkbp:ram
|
up to 64 KB
up to 1000 steps
|
|
gptkbp:release_year
|
gptkb:1979
|
|
gptkbp:replaced_by
|
moderate
|
|
gptkbp:screen_size
|
10 digits
|
|
gptkbp:storage
|
magnetic cards
|
|
gptkbp:successor
|
gptkb:HP_42_S
|
|
gptkbp:type
|
gptkb:Graph_QL
|
|
gptkbp:user_manual
|
available
|
|
gptkbp:weight
|
0.5 kg
|
|
gptkbp:bfsParent
|
gptkb:HP_BASIC
|
|
gptkbp:bfsLayer
|
6
|