1. PIN — 2023-09-23 15:56:10

   …o be placed outside the bank that would allow customers to get cash when it was shut. The task was taken up by Kelvin Hughes, a subsidiary of Smiths Industries Ltd. Goodfellow designed a software system that could accept a machine-readable enc…

2. Microphone — 2021-11-07 21:26:04

   … class="right" title="Hughes carbon microphone" width="" }} He demonstrated his apparatus to the Royal Society by magnifying the sound of insects sc…
   …ratching through a sound box and there were many other witnesses to his microphone's efficiency. Hughes decided not to patent his innovation; instead giving it as a gift to the world, a view that was contrary to Edison's. …

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