Precision, Input Mode
||Simple, 8 BCD digits, no
||1 memory, not permanent
||9 digit 7-segment green LED
||Summation register, instructions
on the back of the calculator
||Introduced 1977, DM 98.50
(approx. 48 Euro), Germany/Frankfurt M.
||2x AA or external power supply
||Length 14.5cm, Width 7.8cm,
||Also 4955-700 and 4955-710.
After the 4950 (ET22) this was the 2nd Dietrich
Lubs/ Dieter Rams construction. The first Braun model, type 4954 (ET11)
not a Lubs/Rams construction but was made by Omron. (Information thanks
to Peter Muckermann and Shinichiro Osaki).
There's various contradicting information about the ET22/ET23 and
4950/4955 (700/710) type units and how they can be recognized. So I'm
sure what I've got here.
It seems that there are versions 4950/ET22, 4955-700/ET22, a 4955/ET23
(see above) and a 4955-710/ET23 (see above).