The program is designed for quick calculation of simple electrical circuits: 1. Calculate voltage, current and circuit power for direct and alternating current. 2. Calculation of load resistance, current and power output for direct and alternating current. 3. Calculation of voltage and power losses for a given current, cross-section and length of the conductor. 4. Calculation of the conductor cross-section for a circuit with a given power consumption, voltage and conductor length. 5. Calculation of short circuit current. 6. Converter of conductor diameter to cross-section, calculation of conductor weight.