a switch that turns off equipment in an emergency.
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Digital convergence
who invented the first mechanical digital calculator
To write 10 past four in digital time, you would write it as 4:10. In digital time format, the hour is written first, followed by a colon, and then the minutes. So, 4:10 represents 10 minutes past the hour of 4 o'clock.
There an infinity of such numbers. One test for divisibility by 9 depends on the digital root. The digital root of any number is the sum of all its digits. If the digital root of a number (or the digital root of its digital root) is divisible by 9 then the original number is, and if the DR is not then the original number is not.
digital fourier analyzer analyses the signals in the form of fast fourier transform.