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curtamr mus i calLCD WatchLED WatchAnalogic Two Hands

zayre concept IIITI 0045 ktsi speechTI Educational

 

sr 40

SR-40 The entry line uses a 9-digit LED-stick giving either 8 digits display in normal mode or 5+2 digits in scientific mode. 

The upper line uses a 12-digit LED-stick giving either 8 or 10 digits in normal mode and 8+2 digits in scientific mode. The calculators use an ON/OFF slider. 

 

 

 

inside the calculator, display and keyboard