A matrix as shown in FIG. 3 and suitable for use in an injection molding process or a compressing molding process for the manufacture of optically readable information carriers comprising an optically readable information track, in which the matrix comprises a metal supporting plate 11 which on one side comprises a layer of a radiation-cured synthetic resin composition 8 comprising the negative of the information track.

A circuit for the multiplication of the elements of a multiplicand matrix represented by first digital signals by the elements of a multiplier matrix represented by second digital signals. A multiplicand line is provided for every row of the multiplicand matrix and the individual sections (L11. . . L14) o f these multiplicand lines are connected to bit-associated circuits (bit planes) (BP1. . . BP4). Every bit plane contains the partial product stages (1, 2, 3) which are allocated to the bits of...

A novel electrical interconnection system is described. The system includes a novel multiple-bussed matrix board and associated hardward and assembly tools for use therewith. The matrix board includes a plurality of plated-through holes arranged in a coordinate system of rows spaced 0.100 inches on center, measured from aperture-to-aperture. Selected apertures are electrically connected to selected bus bars on one or the other side of the board.

A non-blocking switching network which has considerably fewer crosspoint switches than would otherwise be expected. The network is comprised of a primary stage having n inputs and m outputs, a plurality of secondary stages each having m inputs and p.sub.1, p.sub.2, . . . p.sub.p outputs, output m.sub.x being connected via switching crosspoints to all of the outputs p.sub.x, p.sub.(x+1) and p.sub.(x+3), where x is an integral number of the m.sup.th output from 1 to m/2, output m.sub.y being dedic...

For use in combination with a die plate having through bores, matrix means for mounting to the die plate including die means for cooperation with tools of a die assembly to function therewith to work material fed therebetween, one end of said matrix means being constituted by a matrix segment the external dimension of which is greater than that of the through bores in the die plate, the matrix means also including a mounting segment dimensioned for a press fit within a through bore of the die pl...

An electrostatic matrix printer has a movable print head (1) in which a row of selectively energizable needles (2) is fixed for printing dots on a surface to be printed by selective energization of the needles in response to binary coded electrical signals having a number of bits, equal or less than the number of needles in the row. The binary signals, as well as determining the state of a group of consecutive needles in the row, to print different character columns, also include at least one fu...

A finger-pressure actuated matrix switch assembly includes a map overlay and generates a binary coded signal corresponding to the coordinates of the point of application of pressure to the map. The assembly comprises a housing with a slot for positioning a replaceable map card in operative position and a storage chamber for a plurality of such map cards. Each of the map cards is edge-notched with a unique code identifying that card, and switches supported on the housing are actuated by these not...

A tape printer which prints characters in the form of dots disposed in a 7 .times. 7 or 7 .times. 5 matrix has seven print elements which are arranged to be operated selectively to print one line across the tape at a time by pressing carbon paper against the tape. Each print element is provided by a projection from a pivotted member which is controlled by an associated electromagnet. These members and the electromagnets are arranged in such a way that false operation of a print element (when an ...

In the manufacture of a modular building panel having a three-dimensional welded wire matrix, the matrix is comprised of a plurality of essentially identical truss-like matrix subunits which are assembled in a machine which includes means for periodically adjusting for the adverse effects of tolerance accumulation so that the matrix subunits may be fabricated in an essentially continuous array in which each subunit has a length within predetermined tolerance limits. A plurality of strips of pref...

A switching matrix for realizing at least one or more transcoding function having a constant switching time-delay between different binary variables comprises an array of identical switching circuits disposed in the form of a matrix table having n lines and m columns. Each circuit comprises an input terminal C, an input terminal E of said applied binary variable, an output terminal L and an auxiliary output terminal S which supplies the complemented value of the value which appears at the output...