TI-2500 "Datamath", 2nd. version.

TI-2500 "Datamath", 2nd. version.

The second version has a key marked CE only. It uses only 4 AA rechargeable cells.

Texas Instruments TI-2500 "Datamath", 2nd. version.

Display is 8 digits, red LED.

4-functions.

Main integrated circuit - TI TMS0119 (here date coded 7343, i.e. week 43 of 1973).

4.8v (4x AA re-chargeable cells).

74 x 138 x 42 mm (3" x 5.5" x 1.7").

This example was made in U.S.A.

The rear of the 2nd. version TI-2500 "Datamath" showing that there is no battery cover for removal by the user.

The 2nd. version TI-2500 "Datamath" with the case opened.The electronics of this version is similar, but not identical, to the 1st version and is

mounted on a full sized circuit board behind the keyboard.The 4 AA rechargeable cells are attached to the base.