Science, Technology & Medicine
Not-quite-all-electronic telephone switching system
Western Electric 1ESS (digital CPU, but still used reed switches and relays)
First installed in Succasunna, NJ, in May 1965
Not-quite-all-electronic telephone switching system
Western Electric 1ESS (digital CPU, but still used reed switches and relays)
First installed in Succasunna, NJ, in May 1965
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