Hewlett Packard HP-15C

Serial Number	(1) 2605A50461: 1986, 5th week, America
Accessories	HP-15C Handbuch "Fortgeschrittene Funktionen" (German)
	HP Journal May 1993: HP-15C Scientific Pocket Calculator Extends Range of Built-In Functions, bound printout from MoHPC CD-ROM
	Pouch
Condition	Acceptable, some ugly scratches on the alu front plate and near the "2" button
Acquired	2.7.2002

Serial Number	(2) 2441A94505: 1984, 41st week, America
Accessories	Pouch
Condition	Average. Many small sratches on the front on the aluminum plate and around the keys. A major scratch between the ENTER and 0 key. A small dent in the alu plate on the top edge near the middle of the display. Another one more to the right near the 15C logo. Many scratches on the back including the label "Mau".
Repairs	Calulator came arrived very dirty and needed quite a bit of cleaning.
Acquired	17.12.2002

HP codename, series	"1.5", Voyager
Type, Precision, Input Mode	Scientific, 10 BCD digits, exponent ±99, Reverse Polish Notation
Programmable	Maximum 448 steps, program editing, numeric and symbolic labels, flags, ISG & DSE, subroutines, indirect GTO/GSB
Performance Index	2.7
Memory	67 registers, each can store a number or 7 bytes. Variable assignment to programs or registers. Registers are also needed for the complex stack, the solver and numerical integration. Permanent memory
Display	10 digit 7 segment LCD display plus sign
Special features	Full support for complex numbers. Matrix operations. Root finding (solver). Numerical integration. Gamma function.
Original Pricing, Production	1.7.1982 ($135) - 1.1.1989 ($80)
Batteries	3x small button sized cells
Dimensions	Length 7.9cm, Width 12.9cm, Height 1.5cm
Links	HP-15C Advanced Functions Handbook, Aug 1982 (PDF) HP-15C Owner's Handbook, Nov 1985 (PDF, English, 293 pages) HP Journal, Scientific Pocket Calculator Extends Range of Built-In Functions, May 1985 (PDF) Quick Reference. Available Accessories. hp15c.org.
Forensic Result	9.000417403
Comment	HP's last Voyager model. One of the ultimate best calculators ever made! Comes with a wealth of pre-programmed functions hardly seen in any other calculator, see special features above. Its programming model is similar to the HP-11C but offers more progam space, more labels, more flags etc.