The invention provides an input device which includes a gripping part, a pointing
part, and at least one depressible part furnished in such a manner that while holding
the gripping part by hand, a user may manipulate the pointing and depressible parts
with fingertips to perform the same kinds of operations as those of a mouse. The
input device may include a rotating and/or a pivoting part and at least one operating
element which provide a still wider variety of functions when operated.
