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Details on the Time Module Module - built in on NASA HP calculator
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Details on the Extended Memory and Functions Module
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Details on the Card Reader accessory which I bought
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Bar code sheet to load game program instructions
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Program listing for the Hunt the Wumpus game - must key it in
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User instructions for the Hunt the Wumpus game
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Hunt the Wumpus game - memory module required is for extra RAM needed to play it
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Library Solutions books gave you all the programming code to program these games or applications into the HP41C
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Some accessories available for the HP41C range
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Did you know that the HP41C was a backup landing computer for NASA?
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HP41C's were aboard Columbia space shuttle
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Lots of additional info, tips, etc in HP Key Notes magazines
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HP Key Notes also contained information about new accessories
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HP Key Notes magazine May / August 1981
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HP Key Notes magazine September / December 1981 announcing the new HP10 series calculators which are still being sold today
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HP41C User's Library Solutions Games II book
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HP41C Extended Function / Memory Module Owner's Manual
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The program that got me my IT job!! It worked out what shift a policeman would be working on a future date ie. Christmas Day
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Stats apps and geometry
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Other programs including for elctronics I was studying at university