| 摘要 |
873,151. Digital data storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Jan. 15, 1958 [Jan. 15, 1957], No. 1449/58. Class 106 (1). An electric transferring device comprises a data storage unit having a plurality of storage positions each adapted to store an item of data, read-out means associated with each storage position and adapted when energized to cause the associated position to deliver an output representative of the item of data stored therein, scanning means adapted successively to energize separate selected groups of said readout means, said groups including a selectable predetermined number of storage positions, and data receiving means adapted to receive data delivered from each group, including a further storage unit having a number of storage positions equal to the maximum of the selectable predetermined number. An arrangement is described for reading-out a three-dimensional core matrix comprising seven planes each similar to that shown in Fig. 17. The complete matrix (120 characters) is read in 14 print cycles 9 characters being read in each of the first 8 cycles and 8 in each of the remaining 6 cycles. Within each cycle data is read-out serially by character and parallel by bit to a thyratron register 10 and then to a printer having 9 type bars so arranged that a complete line of 120 characters is printed in 14 interlaced printings. That is during the first printing cycle characters 0, 14, 28, 42 ... 112 are printed, during the second cycle characters 1, 15, 29, 43 ... 113, are printed and so on for the other cycles. The cores of the plane shown, Fig. 17, are numbered consecutively from 0 to 119 starting at the top left (intersection of row L0 and column C0) and progressing down each column in turn. Readout of the matrix is achieved by control pulses from a ring timing device (Fig. 7, not shown) which are routed via either an arrangement of relay contacts (Figs. 11, 12, 13, not shown) or an arrangement of triode gates (Fig. 19, not shown) which ensure that the cores are read in the required order. Specification 847,480 is referred to. |
