Polysilicon is crushed with a minimum of manual and machine crushing steps by utilizing a large diameter roll crusher, the circumferential crushing surface of which is formed of a plurality of reversibly mounted, close fitting hard metal plates. The processing logic is adapted to determine an average of least significant bits associated with a maximum of two of the plurality of pixels, add the average to bits associated with a target pixel, and disassociate from the target pixel least significant bits of the target pixel. A guide wire opening in the distal end is in communication with a tunnel contained in the distal end. The apparatus for regulating output voltages can regulate a plurality of output voltages to provide stable DC power sources required by electronic devices. At least one of the electric motors is controlled by voltage regulation and the other electric motor isare controlled by speed regulation. The memory cell may be formed to be unusually compact and has a reduced power supply requirements compared to conventional SRAM memory cells.