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, 10x, ex
			yx, 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

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Web Links: Dave Hicks' Museum of HP Calculators
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