Abstract: A palm pad system including an electronic notepad coupled to a conventional personal digital device (“PDD”) via a data bus is set forth that enables a user to transpose handwritten data into electronic files or pages. The notepad and PDD are mounted onto a common base. The base includes a retaining structure for retaining the notepad on the base and another retaining structure for retaining the PDD on the base. The base further includes a flexible portion that permits the base to be folded into a compact form for protecting the notepad and PDD during transport. A pen containing a transmitter is employed by the palm pad system to transmit a signal to receptive electronics while a user writes data on the notepad with a writing tip contained in the pen. The signal received by the electronics is processed to generate an electronic file representative of the user's handwritten data. The electronic file can be electronically stored and retrieved.

Abstract: A cap containing a retractable tip for interfacing with a touch sensitive display. The cap can be configured to connect to a non-writing end and or a writing end of a pen. The pen can be configured on either or both ends to actuate the retractable tip such that the retractable tip is extended outwardly through an aperture in the cap. The cap can also be configured to connect with other writing or non-writing instruments.