A MAN-3A LED display (left) shown with original Monsanto MAN-3.

Monsanto MAN3 LED displays, shown with packaging.

These rare pieces show MAN-3 displays under construction. Metal leadframes held the leads of each display in place until the epoxy had cured. Afterward, all but one pin would be cut from the frame, so the LED displays could be tested.

Monsanto MAN3 die, 20x magnification. Each segment contains 5 light emitting sectors.

The tiny size of the MAN3 forced clumsy workrounds when homebrew experimenters tried to incorporate the device into their builds. Here is a MAN3 that someone has shoehorned into a 10 pin TO5 adapter.

Commercially manufactured adapters were also available to make the MAN3 more palatable for electronics enthusiasts used to working with DIP packages.

Monsanto calculator display module with nine individual MAN-3A digits on a carrier PCB.