Texas Instruments PS-2100

The PS-2100 Databank stores 125 names and numbers in a credit card sized housing.The display of the PS-2100 consists of one line for alphanumeric characters and one line supporting only numbers. The PS-2400 packaged the same specifications in a conventional housing with a "qwerty" standard keyboard layout. The later PS-3010 combined the size of a credit card with a full keyboard.