This invention provides an intelligent synthesized electronic gauge. It integrates the storage oscillograph, digital frequency meter, signal generator, RLC detecting device, two-circuits stabilized voltage supply which are commonly used for electric experiment with the technology of microprocessor, EDA and flat display. It also adopts the colorful liquid crystal display (LCD) and the grade menu operation of touch screen to realize intelligent detecting. It has the merits of integrated function, an integrated unit of storage oscillograph, digital frequency meter, signal generator, RLC detecting device, two-circuits stabilized voltage supply which are commonly used for electric experiment, on-line update of the device via programmable logic device which is convenient for the production update. It also supports TFT high- resolution LCD with the technology of flush-bonding MPU providing touching screen control to make the device screen of high-definition and simple operation.