| 摘要 |
1,068,105. Radix conversion. MONROE INTERNATIONAL CORPORATION. Oct. 29, 1965 [Nov. 25, 1964], No. 45938/65. Heading G4A. Apparatus for converting a binary number into a binary coded number of another radix (including 10) comprises a serial binary shifting register 10, Fig. 1, for initially storing the number and a second shifting register 12 in which fractional binary digits are stored as the contents of register 10 are repeatedly divided by the new radix until the contents of register 10 are reduced to zero. The contents of register 12 are then repeatedly multiplied by the new radix at multiplier 30, whereby at the end of each multiplication stage the high order digits exceeding the digit capacity of the register 10 are retained in delay flip-flops, Fig. 3 (not shown), of the multiplier unit 30 and are read off in binary coded form and cleared before the next multiplication stage. In examples applied to converting binary to binary coded decimal two multiply by 10 circuits, Figs 3, 3A (not shown), are described in which delay flip-flops (31-35) are arranged in conjunction with full adder (39) to indicate decimal digits in 5211 or 4221 binary code in conjunction with a delay flip-flop 37 indicating a carry in the adding operation. Provision for adding an initial fraction in the register 12 to correct for rounding off errors during the division process is indicated. |
