公开(公告)号：US3626483A

公开(公告)日：1971-12-07

申请号：US3626483D

申请日：1969-07-16

Applicant: SCIENCE ACCESSORIES CORP

Inventor： WHETSTONE ALBERT ,  FINE SAMUEL ,  BANKS WILLIAM ,  PHILLIPS STANELY

IPC: G06F3/033 ,  G01V1/02

CPC classification number: G06F3/03545

Abstract: A writing stylus for use as a graphical-input terminal for digital computers. The stylus will produce a fast rise time shock energy sound wave generated by a spark detectable by coordinately placed microphones, at the instant the spark is produced can be determined and recorded in digital form.