Abstract: A matrices elements memory is constituted by random access memories, and its addresses are divided into a high address and a low address. The high address specifies areas holding matrix elements, and the low addresses of the matrix elements are designated sequentially bit-by-bit, starting from the least significant bit, so as to enable serial reading. A calculation unit consists of pairs of serial multiplicators which are either used in a cascade connection or independently as independent multiplicators, in order to correspond to the data length of a multiplicand.

Abstract: An automatic coordinate determining device has a coordinate tablet comprised of a plurality of conductive lines, and a hand-held probe positionable relative to the tablet for inducing a signal in the conductive lines. A thin film of non-magnetic conductive material, such as aluminum or copper, is provided above the upper surface of the conductive lines for eliminating electrostatic induction caused by floating capacitance attributable to the hand which holds the probe.