TI TMS0105BNC, installed in a Crown CL-80K. The TMS0105 is a an eight-digit four-function chip from 1972, originally designed for the Canon L800, and is among the earliest single-chip calculator IC's.
TI TMS0106NC, installed in a TI-3500. The TMS0106 is another 1972 variant which supports 10 digits and Panaplex compatibility.
TI TMS0119NC, installed in a first production batch TI-2500 Datamath Version 1. The TMS0119 is another early four-function variant.
TI TMS0120NC, installed in a TI SR-10 Version 2. The TMS0120 is the first single-chip scientific calculator IC, and was only used TI's own SR-10 'Electornic Slide Rule', their first scientific calculator.
TI TMS0127NC, installed in a Bowmar MX-80. The TMS0127 is a basic 10-digit calculator IC from 1973.
TI TMC0952NL, installed in a TI-1200. Released in 1975, the TMS0952 is the first true single-chip calculator IC, and requires no support IC's. Note the 'TMC' prefix pictured here, which may be an unusual variation.
TI TMS0972NL, installed in a TI-1250. The TMS0972, released in 1976, integrates all of the passive components required to drive a TMS0952.
