Texas Instruments TI 86

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Texas Instruments TI-86 graphing calculator. Key Specifications & Features Processor: 6 MHz Zilog Z80 microprocessor. Memory: 128 KB of RAM (with roughly 96 KB available to the user). Display: 128 × 64 pixel high-contrast monochrome screen. Capabilities: Advanced calculus, linear algebra (matrices and vectors), complex numbers, and differential equations. Programming: Supports TI-BASIC and assembly language (Z80).