RFT minirex 74

Date of introduction:   Display technology:  LED-modules
New price:   Display size:  8
Size:  5.5" x 3.2" x 1.3"    
Weight:  11 ounces Serial No:  009806
Batteries:  4*NiCd  Date of manufacture:  year 1974
AC-Adapter:   Origin of manufacture:  GDR
Precision:  8 Integrated circuits:  U820 (TMS0105)
Program steps:   Courtesy of:  Gerhard Wenzel

The minirex 74 manufactured in the GDR (German Democratic Republic) end of the year 1974 looks similar to other calculators based on TI's calculator chips. Compare it e.g. with the famous Bowmar 901B. The minirex 74 seems to be the successor of the minirex 73 and was later replaced with the minirex 75 using the original TMS0105 calculator chip.

rft75_2.jpg (31657 Byte)The minirex 74 uses a charging craddle as a comfortable stand during operation and to charge the four internal NiCd-batteries (picture shows minirex 75).


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Joerg Woerner, December 5, 2001. No reprints without written permission.