PEN APPARATUS SYSTEM AND METHOD OF ASSEMBLY

摘要

Pen apparatus, system and method of assembly wherein a pick-up rod assembly performs in conjunction with a normally closed switch to define a p en- up tip switch condition. Coordinate signal information is provided from the pic k- up rod assembly to an amplification network carried by an elongate printed circuit board. A biased signal forming a component of the a.c. amplification network is additionally used in conjunction with a comparator and the noted normally closed switch t o provide pen-up and pen-down orientation data to a host system.