| 摘要 |
Circuitry and method for adding, subtracting, multiplying and/or dividing a plurality of multi-bit, arbitrarily signed, changeable, coded digital input signals representing numerical values to convert said signals into a single analog output signal of predetermined amplitude having a fixed period but a duty cycle that is proportional to the algebraic sum or product or quotient of said input signals. This is accomplished using indirect digital-to-analog conversion.
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