Non Linear Systems Edge Lit Display

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Non-Linear Systems manufactured and sold the first digital voltmeter. This is a video of one of their edge lit digital displays in operation. These early NLS digital meters used a resistor dividing network and relays to select the display digits. If you see one of these in operation you will hear a lot of mechanical relay noise as the range and digits are selected. NLS used this type of edge lit display until the mid 1960s. I did a tear down of the display. Photos of the display may be seen here: • http://www.stevenjohnson.com/nls/481-...

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