Automation System
The electronic component that has been the key to recent developments in automation is the:

improved vacuum tube
integrated circuit
transistor
None of these
diode

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Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

do not allow unbonded service people to work on your equipment
None of these
do not leave training manuals unsecured
run regular simulated tests using TARP (testing of Applications Recovery Planes)
Verify the reputation of the people installing your system

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