Abstract: A rotatable drawing device intended for children. The top and sides of said device are attached and are formed to accept drawing mediums such as chalk, water or dry erase marker used to color, write and draw upon this device. The top of the drawing device has a recessed portion to hold the drawing medium when not in use. The drawing device rests upon and is attached to a base platform on which it rotates. The drawing unit is spaced above the base platform so that the drawing cylinder may rotate about its center axis. Feet adhered to the bottom of the base hold the invention off the floor.

Abstract: A clock multiplexer selects between two asynchronous clock signal inputs to produce a clock signal output such that the clock signal input corresponding to the clock signal output may be denoted as the current clock signal and the remaining clock signal input may be denoted as the selected clock signal. After detecting an edge of a specified type in the current clock signal, the clock multiplexer holds the clock signal output either high or low according to the specified type of clock edge being detected. After detecting an edge of the specified type in the selected clock signal, the clock signal output is released and the selected clock signal allowed to pass.