|MAN-2A (Unknown Mfr.)||
|Written by AnubisTTP on 2007-11-17
The MAN-2 is considered by most to be the first bitmapped 5x7 pixel LED display. A key product in Monsanto's line of ground-breaking LED numerical displays, the MAN-2's bitmapped display area could display letters and characters that were beyond the graphical capabilities of the seven-segment MAN-1. Unlike the TIL311 and other bitmapped smart displays that would follow, the MAN-2 contains no driver circuitry. External character generator logic is required to drive the display's many pixels.
The MAN-2A shown in the photo is of unknown manufacture, but we believe it is most likely made by General Instrument based on a microscopic examination of die construction. Authentic Monsanto MAN-2's can be easily identified by the large engraved 'M' logo in the epoxy above the digit.
MAN2A 5x7 LED display, normal operation. We are unsure who manufactured this example, but estimate it was most likely General Instrument based on a microscopic examination of die construction.
Monsanto MDA111 display drive module with Monsanto MAN2 display installed.
The brains of the MDA111, a Mostek MK 2302 6-bit character generator.
The MDA111 mounts a MAN-2, the first model of 5x7 bitmapped LED display, for character indication.
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