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Several existing operating systems and languages were considered, but none could meet all of the design objectives. A new system was therefore developed, which merges the threaded interpretation of
149:. The resulting operating system, known unofficially as RPL (for Reverse-Polish Lisp), made its first public appearance in June of 1986 in the HP-18C Business Consultant calculator.
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The calculator has many functions buried in a menu structure. The clamshell design is fairly robust, but the battery door is the shortcoming of this whole line; 18C, 19B, and
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50:-based calculator internally, even though this was not visible on user-level in this non user-programmable model. The user has a
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An HP-18C in the state used for operating it. When not in use or for transport, it can be folded together due to its
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152:(NB. This title is often cited as "RPL: A Mathematics Control Language". An excerpt is available at:
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117:. Vol. 8. Rochester, New York, USA: Institute for Applied Forth Research, Inc.,
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Proceedings of the 1988 Rochester Forth
Conference: Programming Environments
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which was quickly followed by the very similar but greatly improved
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on MyCalcDB (database about 1970s and 1980s pocket calculators)
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Wickes, William C. (1988-10-01) . Forsely, Lawrence P. (ed.).
26:, so that its width becomes half of what it is in the image.
54:(another HP first) available, but only had about 1.5
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List of
Hewlett-Packard products: Pocket calculators
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173:Wickes, William C. (January–February 1987).
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72:The HP-18C was introduced in June 1986.
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175:"The HP-28C: An Insider's Perspective"
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111:RPL: A Mathematical Control Language
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244:Hewlett-Packard (HP) calculators
145:with the functional approach of
62:available to store equations.
1:
207:HP-18C at HP's Virtual Museum
548:Scientific non-programmable
46:. The HP-18C is HP's first
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154:RPLMan from Goodies Disk 4
370:Scientific programmable
119:University of Rochester
659:Financial and business
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185:(1). Archived from
891:Emulation software
121:. pp. 27–32.
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60:continuous memory
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189:on 2023-10-06.
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187:the original
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179:HPX Exchange
178:
140:
110:
71:
67:28C/S models
64:
31:
29:
15:
836:OfficeCalc
93:References
40:calculator
841:PrintCalc
826:QuickCalc
137:839704944
38:business
913:Category
831:EasyCalc
691:Prestige
686:Platinum
560:6s Solar
253:Graphing
157:zip file
76:See also
809:CalcPad
361:Xpander
713:17bII+
676:10bII+
201:HP-18C
135:
125:
52:solver
44:HP-19B
32:HP-18C
872:FOCAL
792:Other
728:19BII
708:17BII
671:10bII
650:300s+
585:10sII
534:9100B
529:9100A
444:32SII
356:Prime
336:48gII
296:39gII
143:Forth
34:is a
645:300s
580:10s+
539:9805
484:41CX
479:41CV
346:49g+
331:48GX
326:48G+
316:48SX
306:40gs
291:39gs
286:39g+
147:Lisp
133:OCLC
123:ISBN
30:The
898:16C
882:CAS
877:ALG
867:PPL
862:RPL
857:RPN
819:200
814:100
763:38E
758:38C
753:37E
748:30b
733:20b
723:19B
718:18C
703:17B
698:14B
681:12C
666:10B
620:32E
615:31E
610:30s
605:27S
595:22S
575:10s
524:97S
514:95C
509:71B
489:42S
474:41C
469:35s
464:34C
459:33s
454:33E
449:33C
439:32S
434:29C
429:25C
419:21S
414:20S
409:19C
404:16C
387:15C
382:11C
377:10C
351:50g
341:49G
321:48G
311:48S
301:40G
281:39G
276:38G
271:28S
266:28C
58:of
48:RPL
915::
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738:22
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570:9s
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519:97
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424:25
397:CE
392:LE
261:9g
181:.
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101:^
69:.
56:KB
235:e
228:t
221:v
183:1
159:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
