Early wearable computer: Qing Dynasty abacus ring. http://ift.tt/1AWg9VS
— Eli Dourado (@elidourado) March 9, 2015
via Twitter http://ift.tt/1iA842H
Early wearable computer: Qing Dynasty abacus ring. http://ift.tt/1AWg9VS
— Eli Dourado (@elidourado) March 9, 2015
via Twitter http://ift.tt/1iA842H