Texas Instruments TI-1450

The TI-1450 differed slightly from the TI-1250 introduced roughly one year earlier. The brown housing together with the valuable keyplate desing made this calculator desirable for the manager desk. its interface had 8 digits and 6 functions. it runs on a 9v battery or a plug its numbers are illuminated by red LED's (light emitting diode). and is based on U.S. patent 3819921.