A semiconductor device is produced by forming a gate electrode on a semiconductor substrate, and by then forming sourcedrain regions by an ion implantation using the gate electrode as a mask. In this apparatus, two planar images are produced, which are subjected to registration. According to one embodiment of the present invention, a progressive non-numeric display is provided for displaying the pressurization of the inflation syringe along with numeric indicators of the pressurization. The bi-stable circuit of a first one-shot circuit in the chain has a set input coupled to the basic control signal input, the bi-stable circuits of a remaining or each remaining one-shot circuit in the chain have a set input output of its predecessor in the chain.