The Jargon File (version 4.4.7, 29 Dec 2003):

chiclet keyboard
 n.

    A keyboard with a small, flat rectangular or lozenge-shaped rubber or
    plastic keys that look like pieces of chewing gum. (Chiclets is the brand
    name of a variety of chewing gum that does in fact resemble the keys of
    chiclet keyboards.) Used esp. to describe the original IBM PCjr keyboard.
    Vendors unanimously liked these because they were cheap, and a lot of early
    portable and laptop products got launched using them. Customers rejected
    the idea with almost equal unanimity, and chiclets are not often seen on
    anything larger than a digital watch any more.


The Free On-line Dictionary of Computing (30 December 2018):

chiclet keyboard

    A keyboard with a small, flat rectangular
   or lozenge-shaped rubber or plastic keys that look like pieces
   of Chiclets chewing gum.  Used especially to describe the
   original IBM PCjr keyboard.  Vendors unanimously liked these
   because they were cheap, and a lot of early portable and
   laptop computers were launched with them.  Customers
   rejected the idea with almost equal unanimity, and chiclets
   are not often seen on anything larger than a digital watch any
   more.

   [Jargon File]

   (1997-05-16)