Specifications for Hewlett Packard 9815A

Manufacturer: Hewlett Packard, Calculator Products Division Model Number: 9815A Serial Number: 1623A05013 Date of Manufacture: Early 1978 Manufactured In: USA Original Price: $2900 (base) Weight: 12 Pounds Size: 13 1/2" Wide, 13 3/4" Deep, 4" High Power Requirement: 87 Watts, 120VAC Display Technology: Burroughs Panaplex II, 16 digit positions w/decimal & comma Logic Technology: LSI, Microcoded CPU Architecture Digits of Capacity: 10 + 2 Exponent, 2 non-displayed guard digits Decimal Modes: Two Scientific Modes, or Fixed at 0-9 digits behind decimal Arithmetic Logic: Reverse Polish Notation, 4-Level Stack "Last X" register Math Functions: Four Function, Square Root, Reciprocal, Square, Sine, Cosine, Tangent with Inverse (Degrees/Radians/Grads) Polar <-> Rectangular, Degrees/Min/Sec <-> Decimal, Base 10 & Natural Logarithm, 10^{x}, e^{x}y^{x}, Integer. Constant: N/A, RPN Logic Memories: 20, A-J & 000-009 by default, more at expense of program space. Programmable: Learn Mode, 472 steps (base), 1928 as equipped (Option 002) Indirect Branching, Nestable Subroutines, Label Branches Keystroke Merging 3-Level "For-Next" Looping Volatile RAM Program/Storage Register Memory (overlapped) Peripherals: Built-in 16-column Thermal Printer Built-in Magnetic Cartridge Tape Drive (94K-bytes per DC-100 cartridge) Optional Printer, Plotters, Digitizers, Cassette Tape, I/O Interfaces

Previous Machine: Casio 121-F Next Machine: Sharp EL-8109 Related Machines: Hewlett Packard 9100B Hewlett Packard 9810A Hewlett Packard 9820A Hewlett Packard 9830A Hewlett Packard 9825A Hewlett Packard HP-01 Hewlett Packard 85

Web Links: Dave Hicks' Museum of HP Calculators

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