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The TI-81's user interactions are provided by its so-called
Equation Operation System. This is comparable to the interface provided by the more recent TI-82, TI-83, and so on. This system is capable of such tasks as two-dimensional parametric graphing (in addition to standard two-dimensional function
463:(to ensure programs are persistent when the AAA batteries are being changed). Some early TI-81 units omit the backup battery; if the AAA batteries of one of these units are changed one at a time and quickly, the memory contents are still retained.
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graphing), trigonometric calculations in units of either degrees or radians, simple drawing capabilities, creation and manipulation of matrices up to 6x6 in size, and programming in a proprietary statement-based language.
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In late 2009 an exploit was found that can be used to execute machine code on the TI-81, using manual input of code. The TI-81 has no data link interface; its only means of input and output are the keyboard and screen.
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354:, TI-Nspire CAS, TI-84 Plus CE, and most recently, the TI-84 Plus CE Python. Most of them share the original feature set and 96×64-
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Texas
Instruments distributes software which emulates the TI-81 and its Equation Operating System on a desktop computer using
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display that began with this calculator, with the exceptions of the TI-84 Plus C Silver
Edition and the TI-84 Plus CE family.
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whereas the other Z80-powered Texas
Instruments calculators run at speeds of at least 6
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courses. Since its release, it has been superseded by a series of newer calculators: the
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573:"User Machine Code Execution on TI-81 Becomes a Reality"
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As with its successors, the TI-81 is powered by four
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series). However, the processor is clocked at 2
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49:. Unsourced material may be challenged and removed.
16:Graphing calculator produced by Texas Instruments
640:– The largest archive of TI programs available.
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8:
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1005:Texas Instruments programmable calculators
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974:Texas Instruments signing key controversy
109:Learn how and when to remove this message
525:"TI-Planet's calculator comparison tool"
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122:
310:. It was designed in 1990 for use in
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594:"DATAMATH: TI-81 Engineering Sample"
47:adding citations to reliable sources
14:
542:Christiansen, Brad; et al.
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350:, TI-84 Plus C Silver Edition,
34:needs additional citations for
1:
592:Woerner, Joerg (2009-01-27).
503:Woerner, Joerg (2009-02-08).
213:96×64 pixels, 16×8 characters
571:Evans, Travis (2009-08-17).
1010:Products introduced in 1990
969:Calculator-Based Laboratory
135:A 1994 TI-81 showing graphs
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366:The TI-81 is powered by a
793:Non-graphing programmable
749:TI-92x and Voyage 200 PLT
419:TI-84 Plus Silver Edition
411:TI-83 Plus Silver Edition
348:TI-84 Plus Silver Edition
340:TI-83 Plus Silver Edition
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505:"DATAMATH: TI-81 (1995)"
236:5 MHz or 6 MHz
907:Business Analyst series
768:TI-Nspire–TI-Nspire CAS
551:Texas Instruments, Inc.
246:Programming language(s)
979:list of TI calculators
614:"PC-81 on ticalc.org"
1000:Graphing calculators
425:). It contains 2400
43:improve this article
421:can run at 15
304:graphing calculator
145:Graphing calculator
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849:Scientific models
675:Texas Instruments
544:"TI-81 Guidebook"
308:Texas Instruments
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383:TI-89 Titanium
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99:December 2011
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60: –
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55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
916:Other models
699:
618:. Retrieved
616:. 1998-04-28
608:
597:. Retrieved
587:
576:. Retrieved
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555:. Retrieved
553:pp. 8–9
537:
528:
519:
508:. Retrieved
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365:
299:
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276:Power supply
210:Display size
169:Discontinued
151:Manufacturer
120:
105:
96:
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79:
72:
65:
53:
41:Please help
36:verification
33:
678:calculators
316:precalculus
260:User memory
241:Programming
994:Categories
638:ticalc.org
620:2012-02-04
599:2012-02-04
578:2013-01-27
557:2021-02-04
510:2013-01-27
490:References
415:TI-84 Plus
395:Voyage 200
391:TI-92 Plus
344:TI-84 Plus
336:TI-83 Plus
192:Entry mode
187:Calculator
161:Introduced
69:newspapers
810:TI-55 III
529:TI-Planet
399:TI-Nspire
368:Zilog Z80
352:TI-Nspire
233:Frequency
227:Zilog Z80
223:Processor
205:13 digits
202:Precision
177:Successor
964:TI-BASIC
856:TI SR-50
805:TI-55 II
478:See also
448:and one
429:of user
362:Features
306:made by
254:Assembly
250:TI-BASIC
957:Related
948:TI-1031
943:TI-1030
461:battery
459:backup
457:lithium
312:algebra
83:scholar
58:"TI-81"
923:TI-108
825:TI-58x
820:TI-57x
715:TI-84x
710:TI-83x
472:DOSBox
454:CR1620
450:CR1616
417:, and
291:CR1620
287:CR1616
196:D.A.L.
85:
78:
71:
64:
56:
938:TI-15
933:TI-12
891:TI-68
886:TI-54
881:TI-36
876:TI-35
871:TI-34
866:TI-32
861:TI-30
835:TI-74
830:TI-59
815:TI-56
800:TI-55
784:TI-80
744:TI-89
725:TI-86
720:TI-85
705:TI-82
700:TI-81
695:TI-73
547:(PDF)
427:bytes
409:(the
387:TI-92
379:TI-89
375:TI-80
356:pixel
332:TI-86
328:TI-83
324:TI-82
320:TI-85
300:TI-81
271:Other
181:TI-82
124:TI-81
90:JSTOR
76:books
928:TI-7
735:M68k
397:and
314:and
298:The
281:AAAs
172:1997
164:1990
141:Type
62:news
1015:Z80
759:ARM
686:Z80
470:or
468:DOS
452:or
431:RAM
423:MHz
407:MHz
403:MHz
289:or
265:RAM
218:CPU
45:by
996::
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279:4
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106:(
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97:(
87:·
80:·
73:·
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39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
