VEB Röhrenwerke RFT Konkret 600

Serial number 004299
Accessories Pouch

Original cardboard box, pretty worn

Power supply, 220V AC, s/n 047441

3x Manual: Elektronischer Taschenrechner konkret 600 Bedienungsanleitung (36 pages, german, dated 1977 and 11/1978)

2x Garantieurkunde, dated Nov 2, 1978, Berlin

A 3-page sheet with an evaluation of the capabilities and the precision of the konkret 600. Written by the "Bereichsleiter PV" of the "Wissenschaftsbereich Numerik und Statistik". In the tester's opinion the konkret 600 performs badly.
Condition Very good. The key labels have worn off a little bit.
On the backside a sticker "DAW Berlin, Observatorium Tautenburg, Inv. Nr. 030 224".
DAW stands for "Deutsche Akademie der Wissenschaften".
Repairs, Comments
Acquired 17.10.2003
Type, Precision, Input mode Scientific, 7 BCD digits, exponent ±99, Reverse Polish Notation
Programmable No
Memory 1 storage register, not permanant.
Display 10 digit 7 segment red LED., 3 digits reserved for the exponent. A negative mantissa or exponent is indicated by a small dot.
Processors K145IK4P and K145IK3P (UdSSR), 7-segment display VQD 30
Special features 3-level RPN. After power on the stack registers contain random non-numeric values.
Original Pricing, Production Made by VEB Röhrenwerk Mühlhausen, IM Kombinat, VEB Funkwerkstatt Erfurt.
Introduced around 1974.
According to MOSCOW the identical Elektronika B3-19M was built between 1975 and 1979 and sold for 240 Rubles.
Batteries 4x built-in NiCd accu cells or special external power supply.
Dimensions Length 16.6cm, Width 8.4cm, Height 4.1cm
Links See Soviet Calculators.
Comment The "C" key clears the entire stack, "Cx" only the x-register and "CF" the F-prefix key. Exponent entry is initiated by the "n" key. Identical to the Elektronika B3-19M.
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