Texas Instruments SR‑40


Brand: Texas Instruments
Model: SR-40
Type: Scientific calculator
Picture: TI SR-40
Batteries: Battery pack
Lifetime: Introduced: 1976
Terminated: unknown
Notes: The SR-40 is a scientific calculator with the usual bunch of scientific functions and also memory.

It is almost identical to the TI-30 which was introduced simultaneously with this one. The main difference is that the SR-40 came with a battery pack, but the TI-30 used a 9V battery. And the SR-40 looks a little bit more professional.

It is functionally identical to the TI 45 which has a fluorescent display.


A power adapter.