Smaller processes lead to fpga leakage crisis

A thermal printer for electronic calculators or other computing devices comprises a multi-layer print head with a metallized layer on one outer surface formed as a series of master characters each comprised of a plurality of segments which are electrical resistance elements that extend between end contacts. These contacts are connected to an intermediate or buried metallized layer within the ceramic body which in turn provides for interconnections with another metallization layer including input ground and driver lead contact pads formed on the other outer surface of the ceramic body. A logic control sub-system for the printer receives signals from a driver output such as a calculator computing circuit and thereby controls the electrical energy furnished to the various character segments on the print head to heat them and produce the appropriate printout when the print head is in contact with heat sensitive paper. This sub-system stores the information received from the driver output and then utilizes the stored information in a multiplexing or time sharing arrangement to energize sequentially groups of preselected segment portions of all the master characters during a series of separate consecutive time periods of the print cycle.