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 TI-81
Graphing Calculator

USA - 1990

Scientific,
Programmable
Graphic
"First graphics calculator developed for math education that adds a new visual dimension to mathematics instruction; makes it easier to explore functions and understand concepts. Large display has pull-down menus; TI-81 can define, save and graph four functions or three parametric expressions; enter, edit and manipulate three 6 x 6 matrices. Seven built-in zoom features; 4,632 bytes of memory (2,400 bytes reserved for programs. A single keystroke plots selected functions in the viewing rectangle. Performs graphic and numeric analyses of one and two-variable data. SRP $110.00."
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and published with the permission of Texas Instruments Incorporated.

TI Calculator History