Texas Instruments Scientific Calculators

More details to come, in the meantime here are some photos of the internal Printed Circuit Boards for some of TI's Scientific models. Please note that to minimize glare, many of these photos were taken at a slight angle, thus the images may be slightly skewed.

Inside the SR-10 and SR-11, TI's first "slide rules"

• SR-10 main PCB photograph
• SR-11 main PCB photograph

Inside the full scientific SR-series calculators

• SR-50 main PCB photograph
• SR-50 keyboard PCB photograph
• SR-51A main PCB photograph
• SR-51A keyboard PCB photograph
• SR-56 main PCB photograph
• SR-56 keyboard PCB photograph

Inside the later TI-series scientific calculators

• TI-59 Programmable main PCB photograph
• TI-59 Programmable keyboard PCB photograph
• TI-55 main PCB photograph