Provided are a memory cell programming method and a semiconductor device which may be capable of simultaneously writing a bit of data and then another bit of the data to a plurality of memory blocks. The spindle, the rope and the drillstring together define a common centerline during attachment and detachment of the overshot to and from a drilling tool and during drilling. Raw network DNA components may be acquired from local or remote sources. In this system, it is possible to obtain the information on the printers efficiently without using a server computer. Portions of the first plurality of conductive segments and the second plurality of conductive segments are offset from each other along the axis of rotation. A reversible thermochromic composition having an improved light-fastness comprising an electron donating compound, an electron accepting compound ultraviolet absorbing capacity represented by the following general formula I: .