SU402001A1 - DEVICE FOR ISOLATING EXTREME VALUE OF FUNCTION - Google Patents

Description

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The invention relates to computing and can be used to build digital integrating machines of both parallel and serial type.

A device is known for extracting an extremal (minor or smallest) function value when setting the initial information in increments.

A disadvantage of the known device is its complexity: it consists of two tracking and two digital integrators.

The aim of the invention is to simplify the device for allocating an extreme value of a function.

SUMMARY OF THE INVENTION The essence of the invention is that an extreme value function register and a switch are entered into the device, the output of which is connected to the second input of the comparison circuit and the input value register of the extreme value function. The output of the latter is connected to the first input of the switch, the second input of which is connected to the output of the register of the current function value. The second input of the device is connected to the third input of the comparison circuit, the output of which is connected to the third input of the switch.

The drawing shows a device diagram containing a function increment input 1, an adder 2 for obtaining the current function value, a register 3 for the current function value, a register 4 for the extremal function value, a comparison circuit 5, a switch 6, an input 7 for controlling the comparison circuit. Before starting work, registers 3 and 4 underestimate the initial value of the function, the extreme value of which must be distinguished. When allocating the largest (smallest) value at the control input 7

comparison circuit 5 is set to such a potential, in which the latter permits the transfer through register 6 of the contents of register 3, after the number at the output of adder 2 is greater (smaller)

than at the other input of the equilibrium circuit 5.

The increments of the function arrive at input 1. In the first iteration, the current value of the function, which is formed at the output of the adder 2, and its initial value are compared.

If the first is less (more) than the second, then in the second iteration, the initial value will be rewritten via switch 6 to register 4.

If the opposite is true, then in the second

the iteration into register 4 will be written to the current value obtained in the nerve iteration. It is simultaneously compared with the current value generated in the second iteration. As a result of such uninterrupted

process in register 4 is recorded and saved the largest (smallest) value of the function.

Subject invention

A device for extracting an extreme value of a function containing an adder, the first input of which is connected to the nerve input of the device, the second input of the adder is connected to the output of the register of the current value of the function, the input of which is connected to the output of the adder and to the first input of the comparison circuit, simplify the device, a register of the extreme value of the function and a switch are entered into it, the output of which is connected to the second input of the comparison circuit and the input of the register of the extreme value of the function whose output to It is connected to the first input of the switch, the second input of which is connected to the register output of the current value of the function, the second input of the device is connected to the third input of the comparison circuit, the output of which is connected to the third input of the switch.