Abstract: The invention comprises a finger actuated one handed keyboard having a palm rest portion for the palm of the operator's hand to rest upon, and at least three finger actuated sleeve receptacle assemblies. Each assembly has an outer lateral extending sleeve pivotally connected to a longitudinally extending inner half sleeve aligned for receiving the outer and inner portions, respectively of a finger; and a plurality of finger actuated key members with at least two key members aligned in front and behind the lateral outer sleeve and confronting the pivotal path of longitudinal movement of the lateral outer sleeve in either direction and adapted, upon longitudinal movement in either direction by the outer finger portion about the middle joint in either direction, to actuate either confronting key.

Abstract: A tape cartridge for use with typewriters, printers, and the like having reusable or non-reusable tape or ribbon. The cartridge has a housing and a take up reel drive member, take up reel post, and supply reel post within the housing. The cartridge has a detachable sub cartridge detachable within the housing. The sub cartridge has a take up reel and supply reel each on hubs, a panel connecting the hubs together, and a reel of tape wound on the supply reel. The sub cartridge's hubs are detachably mounted to the posts of the cartridge housing to detachably mount the sub cartridge to the housing of the cartridge. The cartridge housing has spaced ribbon guides to guide the tape or ribbon of the sub cartridge from the supply reel to the take up reel of the sub cartridge.