| 摘要 |
<p>926,355. Superconductor circuits. GENERAL ELECTRIC CO. Dec. 28, 1959 [Dec. 31, 1958], No. 44029/59. Class 40 (9). [Also in Group XIX] A parallel-mode digital computer (see Group XIX) is constructed from a number of different modules each of which is similar to the adder stage shown in Fig. 2, the actual interconnections between the cryotron gating elements and their connection to the output terminals depending on the function to be performed by the module. A number of modules are interconnected to form multi-stage adding, subtracting, multiplying, dividing and comparison circuits. An adder stage has control coil pairs 27, 28; 21, 22; 16, 17 to which two digits A, B to be added and a carry digit C from a preceding stage, are applied. The control windings surround superconducting gate elements 11, 12, 18, 19, 23-26, which are connected at one end to a current source and at the other end to one of terminals 14, 15 signifying binary 0 and 1. The arrangement is such that for every combination of digits A, B, C, a superconducting path exists between the current source and the appropriate output terminal 14, 15. The adder stage is provided with a carry unit, the gating elements of which are interconnected so that a carry output digit 1 is obtained whenever two or all of digits A, B, C are 1.</p> |
