4. The apparatus defined in claim 3, further including means for resetting said reversible counter after said certain count is registered in said latch.
4. The apparatus defined in claim 3, further including means for resetting said reversible counter after said certain count is registered in said latch. 5. The apparatus defined in claim 4, wherein said means for controlling said alphanumeric display includes a numerical driver to effect the quantitative display of said certain count.