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A computer-controlled stimulator is described that can provide electrically isolated impulses to be used for transurethral electrical stimulation ot the bladder. The device was designed to provide stimulation in the frequency range of 10–100 Hz at pulse widths of between 100 microseconds and 20 milliseconds. Stimulation currents were a maximum of 25 milliamps, with the electrical leakage of the output stage less than 10 microamps to ground. The stimulator used a Motorola 68705R3 microprocessor. Its intended use is to attempt to enhance or restore bladder function in paralyzed individuals with incontinence.