Electronic system for verifying the proper functioning of industrial screwdrivers, said electronic system including a test bench, said test bench comprising • a plurality of hydraulic brakes (F1-Fn) for testing a plurality of screwdrivers, one of the plurality of brake is selected for testing a screwdriver (A), said plurality of hydraulic brakes is suitably controlled by a hydraulic circuit comprising at least one pump (P), which withdraws the fluid from a reservoir (T) and provides it to a pressure regulating valve (VP), which in turn provides it to the brakes, • each brake being provided with measuring transducers (TR), connected to an electronic driver board (SP), which also controls such regulating valve (VP), • a hydraulic distributor (D) is present between such brakes (F1-Fn) and the regulating valve (VP), such hydraulic distributor comprising solenoid valves (E1-En) able to select, operate and control the hydraulic pressure of each brake to which it is selectively connected, • a computer (U) which communicates with such board and comprises a suitable driving program stored thereon capable of adjusting the braking capacity of the brakes according to a preset braking torque/brake rotation angle curve, characterised in that said electronic system comprises • a first negative feedback loop (P-A) and a pressure regulator (P-PID) for each of such solenoid valves (E1-En) of proportional integral type which ensure that an actual pressure curve (P-out) exerted on the brakes corresponds to a desired and set pressure curve (P-ref), • a second negative feedback loop (T-A) and a second regulator (T-PID) to ensure that an actual torque/angle curve (T-out) measured by the transducers (TR) present on the brakes corresponds to a curve that one wishes to set (T-ref), such second regulator determining a pressure reference value. • a plurality of hydraulic brakes (F1-Fn) for testing a plurality of screwdrivers, one of the plurality of brake is selected for testing a screwdriver (A), said plurality of hydraulic brakes is suitably controlled by a hydraulic circuit comprising at least one pump (P), which withdraws the fluid from a reservoir (T) and provides it to a pressure regulating valve (VP), which in turn provides it to the brakes, • each brake being provided with measuring transducers (TR), connected to an electronic driver board (SP), which also controls such regulating valve (VP), • a hydraulic distributor (D) is present between such brakes (F1-Fn) and the regulating valve (VP), such hydraulic distributor comprising solenoid valves (E1-En) able to select, operate and control the hydraulic pressure of each brake to which it is selectively connected, • a computer (U) which communicates with such board and comprises a suitable driving program stored thereon capable of adjusting the braking capacity of the brakes according to a preset braking torque/brake rotation angle curve, • a first negative feedback loop (P-A) and a pressure regulator (P-PID) for each of such solenoid valves (E1-En) of proportional integral type which ensure that an actual pressure curve (P-out) exerted on the brakes corresponds to a desired and set pressure curve (P-ref), • a second negative feedback loop (T-A) and a second regulator (T-PID) to ensure that an actual torque/angle curve (T-out) measured by the transducers (TR) present on the brakes corresponds to a curve that one wishes to set (T-ref), such second regulator determining a pressure reference value. <EOS>