An electronic scale integrally formed within the housing of computer keyboard. The scale includes an item holder which may be removably attached to a weighing unit mounted in a clearance region located at a rear portion of the keyboard housing. In operation, the weighing unit outputs weight measurement signals along signal lines to one of a variety of processing and/or display devices so that, for example, postage for the item being weighed may be calculated. The electronic scale may also be incorporated within a housing having an attachment device for removably or permanently attaching the housing to any surface desired.