Suppositum murinum
Suppositum murīnum est fundamentum muribus computatralibus adhibitum meliore adhibitione, sicut accuratio labansque.

Historia 
Dum exhibitio anno 1968 a Duglassio Engelbart publico primum agens in mure computatrali, 
Duglassius consolam gubernationis adhibebat a Iacobo Kelley societatis Herman Miller formatam, quae continebat claviaturam et inset portion ut area adiumenti pro mure adhibiti.
Iuxta Iacobum, 
et etiam ab Alexandro Pang dictum, Iacobus primum suppositum murinum formatum unus annus deinde, 1969.

Singula suppositi murini ab Armando M. Fernandez formata edenda curata sunt in commentariis Xerox Disclosure Journal anno 1979 cum descriptione Anglica:

CRT CURSER CONTROL MECHANISM PAD
To assist the operation of a cathode ray tube pointer 10 wherein a metal ball is rolled on a hard surface, the disclosed pad may be utilized. A resilient, rubber-like material 12 is bonded or otherwise attached to a hard base material 14 which keeps the rubber-like material flat. The base has four rubber-like pads 16 on the opposite side from the resilient material to refrain the pad from sliding on the surface of a table, for instance.
Xerox Disclosure Journal, Volume 4, Number 6, November/December 1979

Apud anno 1982, plurimi usores a Xerox ball mouse "peculiares tabulas" adhibebant ad frictionem pilae deminuendam.

 Tabula frigeratoria

Notae

Nexus externi 

Computatra