| gptkbp:instanceOf | gptkb:calculator 
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                                | gptkbp:category | gptkb:personal_computer gptkb:calculator
 
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                                | gptkbp:compatibleWith | gptkb:barcode gptkb:thermal_printer
 gptkb:HP-IL_interface
 magnetic card reader
 
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                                | gptkbp:countryOfOrigin | gptkb:United_States 
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                                | gptkbp:dimensions | 16 x 7.9 x 3.2 cm 
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                                | gptkbp:discontinued | 1990 
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                                | gptkbp:displayType | alphanumeric LCD 
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                                | gptkbp:expansionSlots | 4 
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                                | gptkbp:features | gptkb:wristwatch programmable
 text editing
 alphanumeric display
 extended memory
 modular expansion
 real-time clock
 synthetic programming
 
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                                | gptkbp:input | gptkb:keyboard 
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                                | gptkbp:introduced | 1983 
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                                | gptkbp:manufacturer | gptkb:Hewlett-Packard 
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                                | gptkbp:notableFor | expandable architecture first calculator with alphanumeric display
 used by NASA
 
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                                | gptkbp:operatingSystem | HP proprietary firmware 
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                                | gptkbp:powerSource | 4x N-cell batteries 
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                                | gptkbp:predecessor | gptkb:HP-41C gptkb:HP-41CV
 
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                                | gptkbp:programmingLanguage | keystroke programming 
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                                | gptkbp:RAM | 319 registers 
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                                | gptkbp:ROM | 122 program steps 
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                                | gptkbp:successor | gptkb:HP-42S 
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                                | gptkbp:usedIn | gptkb:Space_Shuttle_missions 
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                                | gptkbp:weight | 205 grams 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:HP-41C 
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                                | gptkbp:bfsLayer | 5 
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                                | https://www.w3.org/2000/01/rdf-schema#label | HP-41CX 
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