Systems, devices and methods are provided for expanding an interface to a computer. The exercise machine also has a predetermined number of sensors, for detecting at least one exercise machine operating parameter. In the shield cover, a tubular portion which forms a fitting portion for a plug, mounting terminals for a printed circuit board, first contact pieces for a shield member of the plug, and second contact pieces for a case of an apparatus are integrally disposed. The BISR assembly circuit generally comprises one or more memory blocks each comprising a counter configured to generate a clock cycle count value in response to a repair solution during the BIST and BISR operations.