VARIABLE-MODULE ADDER Russian patent published in 2002 - IPC

FIELD: controlled pulse generators with selective reference phase. SUBSTANCE: device designed for adding binary digits to provide for electronic variation of addition module has pair of standard adders 1, 4 of which one functions to add addend and other, to correct addition result, if necessary; newly introduced in device are AND gate 9, controlled inverters unit 11, and comparator 7. Device also has module control bus 6 supplied with binary digit equal to given addition module. Comparator 7 is used to compare sum formed by main adder 1 with addition module and if this sum is equal to or greater than module, it generates signal in response to which correcting adder 4 subtracts module value from this sum and yields carry signal. EFFECT: enlarged functional capabilities due to electronic control of addition module. 1 dwg