Commodore SR-9190

Serial number	140630, England
Accessories	Power supply
	Manual for the SR 9190R, undated, German, approx. 80 pages including an addendum labelled "Druckfehlers"
Condition	Average. The silver lining on the front has worn off quite a bit. Initially, the leftmost display segment was not functioning. The manual is pretty banged-up but complete.
Repairs	12.11.2002 Removed totally corroded battery pack and fixed the display contact problem. The calculator is now fully functional!
Acquired	2.11.2002

Type, Precision, Input mode	Scientific, 10 BCD digits, exponent ±99, Algebraic
Programmable	No
Memory	9 registers (1-9), not permanent
Display	10 digit 7 segment red LED mantissa plus sign, 2 digit 7 segment red LED exponent plus sign
Special features	Conversions
Original Pricing, Production	Information courtesy of Robert (4/2010): "I've just been clearing out our loft and found some old receipts. Amongst them was a receipt for a Commodore SR-9190 calculator bought by my dad for my brother on 18 November 1978 for £24.75. I would guess this was an average retail price for it then."
Batteries	Built-in battery pack or external AC power supply, 6V DC, plus on center
Dimensions	Length 15.1cm, Width 7.9cm, Height 3.6cm
Links	See PR-100. Vintage Electronic Calculator Manuals. Manual (PDF, English) Manual (PDF, German, including addedum with corrections)
Comment	Compared to the SR-4190 the SR-9190 has more storage registers and a number of additional functions.