Radio Shack
Model: EC-200
Battery: 4 x 1,5 AA / 4 x 1,2 Ni-Cd
Adapter:
Year: 1973
Chip: TMS0109 or TMS0103, 2*SN75491, 2*SN75492
Info:
Model: EC-2001 desktop
Battery: 2 x D cells
Adapter: 6 volt adapter
Year: 1978
Chip: TMC1073NL
Info: Radio Shack
Model: EC-201
Battery: 9 volt
Adapter:
Year: 1979
Chip: TMS0972
Info:
Model: EC-314 Kosmos 2
Battery: 2 x AA
Adapter:
Year: 1979
Chip: TMC1172NL
Info: Same version of the kosmos 2, but with the radio brand shack, Kosmos International, Inc. based in Atlanta, Georgia introduced with the Kosmos 1 already in the year 1977 a pocket-sized biorhythm calculator.On a first glance you notice the original calculator keypad and the three „sine-waves“ representing our:
| • Physical Cycle (P) • Emotional Cycle (S) • Intellectual Cycle (I) |
This Kosmos 2 was introduced in 1979 as the successor of the original design and obviously was the result of some cost reduction programs:
| • The 6 red and amber LED's at the end of the three "sine-waves" were omitted • The housing feels much cheaper • Manufacturing was moved from Japan to Taiwan |
Model: EC-4000
Battery: BP6 , BP7
Adapter: AC9131, AC9132
Year: 1979
Chip: TMC1501
Info:The Radio Shack EC-4000 does not only look like an early TI-57 Programmable, it's 100% identical. Please notice that Texas Instruments used in Italy a simple sticker instead the molded TI-logo and TEXAS INSTRUMENTS nameplate found with the US-built TI-57 Programmable.
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