Texas Instruments Voyage 200 Calculator

Product Features
QWERTY keyboard for typing
Large easy-to-ready 128 x 240 pixel LCD
Preloaded with popular applications, including The Geometer's Sketchpad
Accepts StudyCards for history, foreign language, English, and more
Numeric and symbolic equations; factor, solve, differentiate, integrate

Technical Details
Display: 128 x 240 pixels
Keyboards: QWERTY, numeric
Memory: 188K RAM; 2.7 MG Flash ROM
Applications: Cabri Geometry(tm), CellSheet(tm), Finance, The Geometer's Sketchpad, Polynomial Root Finder, Simultaneous Equation Solver, Statistics with List Editor, Study Cards, Language Localization (French, German and Spanish)
Graphing: Parametric and polar equations, recursively-defined sequences, 3-dimensional surfaces, and differential equations. Up to 99 graphing equations defined and saved for each graphing mode. Real time rotation of 3D surfaces.
Symbolic Units: For use in equations, computations, and unit conversions. Over 100 units in 28 unit categories. 20 constants with symbolic units.
Calculus: Matrix operations including inverse, determinant, transpose, augment, elementary row operations, and reduced row echelon form. Matrix elements can be real or complex and numeric or symbolic. Advanced matrix operations including eigenvalues, eigenvectors, LU and QR decompositions.
Compatibility: Calculator-Based Laboratory(tm) (CBL2(tm)) and Calculator-Based Ranger(tm) (CBR(tm)) Systems; link capabilities for data transfer through I/O port; USB and unit-to-unit link cables included
Other Features: Intuitive icon desktop; Built-in clock; active Calculator Home history screen holds up to 99 previous entries for deep recall; interactive numeric equation solver; memory management; 255 symbols in the character set including Greek, system, and international characters; ViewScreen(tm) overhead port
Power Source: 4 AAA batteries
Width: 10.2 inches
Height: 10.5 inches
Depth: 1.9 inches
Weight: 2.25 pounds as shipped