Amplifier for photodiode 1 (CB6787E)

We found this circuit in Harris' 90s documentation. The circuit applies to modern operational amplifiers.

Head and Tails (CB4727E)
This is yet another simple LED driving game circuit that appears in several other versions on this site....
Photoelectric Sensor with Opposite Cells 741 (CB14645E)
We found this circuit in a manual of optoelectronics from Texas Instruments. In it photodiodes or...
Roman Numerals Display (CB16461E)
This interesting circuit is from a 1988 documentation. It is a matrix of diodes that converts...