| 摘要 |
1,090,239. Selective signalling. ING. C. OLIVETTI & CO. S.p.A. March 11, 1965 [March 12, 1964], No. 10372/65. Heading G4H. Voltages proportional to the sine and cosine of an input number represented in pure binary code are produced by appropriately selected series-connected secondary windings of a sequence of transformer stages. |
