Yilane Systems YS-101 Single-Digit Clock (Monsanto MAN-1)

The YS-101 is a single-digit clock constructed with a 16F84A PIC microcontroller. The example shown here is equipped with a Monsanto MAN-1 LED display, generally considered to be the world's first production seven-segment LED display.

Each segment of the MAN-1 is made up of two silicon wafers, which each contain four diode elements. With the inclusion of a decimal point, the entire display contains 57 separate diode dies, which is quite a lot compared to modern displays which typically only use a single diode for each segment. The MAN-1's first-generation diode technology results in a very dim display, but the LED's inherent ruggedness was a drastic improvement over the Nixie tubes, Minitrons and Panaplex displays it was designed to compete with.

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Category:

Science & Technology

Tags:

• monsanto
• man1
• led
• display
• clock
• pic
• microcontroller
• 16f84
• 16f84a

[hp2114b]

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[zaprodk]

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Track and title ?