Арифметичний пристрій

Abstract

Arithmetic device has register, adder, generator of multiplier, unit for sign forming, counter, program control block, adder of analysis of position of dot, unit for analysis of digits of multiplier, at that input of second operand of the device is connected to information input of register, output of sign place of register is connected to the first input of the unit of sign formation, outputs of program control block from first to third ones are connected to inputs of register, adder and counter zeroing, respectively, fourth and fifth outputs of program control block are connected to inputs of control of record of register and adder, output of the higher information place of adder it connected to information input of lower information place of register, sixth output of program control block is connected to input of control of counter record, output of sign of equality to zero of that one is connected to input of sign of the end of computing of program control block, seventh, eighth, and ninth outputs of that one are connected to input of control of register shift, input of count of counter, input of control of adder shift. Respectively, output of start of program control block is connected to input of start of the device, information input of counter is input of capacity of second operand of the device, tenth and eleventh outputs of program control block are connected to inputs of control of entering sign and zeroing higher k-th place of register. There is included adder-subtractor, at that input of the first operand is connected to information input of adder output of which is connected to input of generator of multiples of multiplier, eighteenth, nineteenth and tenth outputs of program control block are connected to input of zeroing, input of control of entering and input of control of reading of adder-substractor, output of register is connected to information input of adder-subtractor that is connected to output of adder as well, output adder-subtractor is connected to information input of adder, outputs of places of adder-subtractor are connected to outputs of places of result of operation of adding or subtraction, information output of generator of multiples of multiplier is connected to input of adder-subtractor, output of sign place of adder is connected to second input of the unit of sign formation output of which is connected to sign place of adder0subtractor and register, outputs of codes of operations of adding, subtraction and multiplication are connected to respective inputs of program control block.