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PID controllers (Qtbeip)

Computer viruses ()
Vehicles and equipment (Q)
    Equipment (Qt)
         Use For: Apparatus; Devices
         Related Term (Associative): Control devices (Dcj); Communication devices (Dsg); Testing equipment (Gu); Structural parts (Pbp); Building materials (Rbm)
        Types of equipment (Qtb)
            Electronic equipment (Qtbe)
                 Related Term (Associative): Electronic control (Dcge); Control devices (Dcj); Vehicle electronics (Qpv); Computers (Qtpxm)
                Electronic controllers (Qtbei)
                     Use For: Controllers (Electronic equipment)
                     Related Term (Associative): Traffic signal controllers (Dcmthrrc)
                    PID controllers (Qtbeip)
                         Use For: Proportional integral differential controllers; Three term controllers