SU1251049A1 - Device for determining route - Google Patents

Abstract

The invention relates to the field of computer technology and can be used in solving the problems of determining route graphs between thoughts of given vertices. The invention makes it possible to identify the vertices included in a given route. The device contains a group of keys, a group of triggers matrk-. Zu of NifN tree branch models, each tree branch model being designed as a trigger, group. elements OR, group of counters, group of elements AND, comparison unit, register, trigger, pulse distributor, pulse generator, I Il. ate

Description

The invention relates to computing and can be used in solving problems of determining on route graphs between two given vertices of a tree.

The purpose of the invention is to expand the functionality by identifying the vertices included in a given route.

The drawing shows a functional diagram of the device for determining the route.

The device contains rjpynny keys 1, a group of triggers 2, matrix

3 from NisN branch models (tree), each branch model being designed as a trigger 4, a group of elements OR 5, a group of counters 6, a group of elements AND 7, a comparison block 8, a register 9, a trigger 10, a distributor 1 pulses, a generator 12 pulses ,

The device works as follows.

To bring it back to its original state, two counters 6 with numbers corresponding to them are included, with two vertices between which you need to find a route. In addition, register 9, counters 6, triggers 2 and 10, and distributor AND, in matrix 3 include those triggers 4, ria whose corresponding positions of the matrix of the adjacency graph are one hundred (i.e. there are matching edges), with the exception of the main diagonal triggers, which are not included in the work. Zero potentials from the outputs of the flip-flops 2 open keys 1.

With the signal applied to the input of the device, the generator 12 starts pulsing the input of the distributor 11, which in turn generates pulses to the first, second and Tod. exits. The first impulse of the distributor 11 pos TjTiaeT to the single inputs of the triggers

The first 4 columns of the matrix 3 single signals from the outputs of the triggers through the elements OR 5 arrive at the counting inputs of the corresponding counters 6, which increase their readings.

Similar processes occur when the distributor 11 pulses through the second, ..., N-y outputs. Each counter 6 has a capacity of 2 and, when two pulses are counted, gives a unit overflow potential to

the arrival of a signal at its installation input (regardless of the number of pulses arriving at its counting input after the arrival of the first two pulses). After the passage of N pulses at the output of the first discharge of counters in the rows of matrix 3 of the same name, only one trigger 4 is included in the work, and there is a single potential, the remaining counters have a zero potential at the output of the first discharge, and a single one at the output of the second discharge potential (overflow),

Let at the output of the first bit i-ro of the counter 6 there is a single potential arriving at the second input of the element And 7, Then the (N + 1) -th pulse of the distributor 11

passes through the element And 7; on the single input of trigger 2, which is a unit potential, closes key 1 ;, the (N + 2) -th distributor pulse does not pass through the closed keys 1 to the zero inputs of the triggers 4 and the installation inputs of the counters 6, as a result of which the triggers 4 corresponding columns of the matrix 3, the corresponding counters 6 and the triggers 2 remain until the end of the operation of the device in the state in which they passed after the passage of the first N pulses of the distributor 1 I.

For those counters 6 that have overflowed after the passage of the first N pulses of the distributor 11, a single potential is present at the output of the second bit and is fed to the corresponding inputs of register 9,

which writes 1 to the memory cells after the (N + 1) -th pulse of the distributor 1I flips trigger 1 to one state, and it outputs a signal to the register entry 9 Because there is zero potential at the first discharge output of these counters, the corresponding elements And 7 are closed to cool the pulse from the (N + 1) -th output of the distributor, therefore the corresponding triggers 2 remain in the zero position and do not close the keys of the same name 1.

The impulse from the (N + 2) -th output of the distributor 11 passes through the keys I, which remain open, to the zero inputs of the flip-flops 4 corresponding columns of the matrix 2 and transfers them to the initial (

left) position. This pulse also passes to the installation inputs of the corresponding counters 6, which reset their readings to O. This completes the first cycle of operation of the device.

In the second cycle of operation of the device, the distributor 11 also alternately pulses to the first, second, etc. exits. These pulses transfer those triggers 4, which were returned to the zero position by the (N + 2) th pulse of the distributor 11, to a single state. Counters 6, which were set to the zero state by a pulse from the (N + 2) -th output of the distributor 1 1 in the first cycle, count the pulses arriving at their inputs. In this case, the input of counter 6, in which the j-th row of matrix 3 after the first cycle was not returned to the initial state g of triggers 4, will receive a smaller (per g) number of pulses. Therefore, in the general case, some of the counters 6 after the passage of N pulses of the distributor 11 in the second cycle have not reached the state - | No overflow and only one pulse is counted. Thus, the triggers of the 4 corresponding columns of the matrix i3 will not be returned to the initial zero state at the end of the second cycle, and these counters will not be set to O. The impulse 11 flips the trigger 10 from the (N + 1) -th output of the distributor 11, a single signal from the inverse output of which is fed to the control input of block 8. The last one makes a one-by-one comparison of the signals arriving at its first and second groups of information inputs, and outputs the signal only under the condition that both groups of information These inputs receive the same signals.

The operation of the device continues until such time as, at the end of a cycle, block 8 has the same signals on both groups of information inputs. Then block 8 outputs the output signal to the input of the generator I2 and stopping its operation. The numbers of the vertices through which the route passes between the two selected vertices of the tree are determined by the numbers of the counters

five

about j about 5 5 0 5

0 5

0

0494

6, at the outputs of the second bits of which there is an overflow potential.

Claims (1)

Invention Formula A device for determining the route, containing a matrix of NxN branch models (where N is the number of tree vertices), each branch model is completed as a trigger, a group of elements OR by the number of rows of the branch model matrix, a group of keys by the number of columns of the branch model matrix, a group counters according to the number of rows of the branch model matrix and the comparison unit, each information input of the first group of which is connected to the output of the second discharge of the corresponding group counter, which means that, in order to extend the functionality and by identifying verschin, vo schedshih in zadanny route it entered the group of elements And group. flip-flops, register, trigger, pulse distributor, and their generator. pulses, the start input of which is set to the Start Start input of the device, and the stop input of the pulse generator is connected to the output of the comparison unit, the output of the pulse generator is connected to the input of the pulse distributor, whose N outputs are connected respectively to the installation inputs of 1 triggers of the branch matrix matrix , (N + 1) -th output of the pulse distributor is connected to the first inputs of elements AND of the group and the trigger input, (N -1-2) -th output of the pulse distributor is connected to the information inputs of the keys of the control e inputs of which are connected to the outputs of the group triggers of the same name, the output of each group key is connected to the installation inputs of all triggers of the column of the branch model matrix of the same name and to the installation input of the group's same name counter, the first bit of which is connected to the second input of the same element of the group I, the output of each element of the group is connected to the input of the group trigger of the same name, the output of the second bit of each of the group counters is connected to the information input of the register of the same name, the bit 0 ny. the outputs of which are connected to the corresponding information inputs of the second group of the comparison unit, the register write enable input is connected to the forward trigger output, the inverse output of which is connected to the synchronization input of the block comparison, the input of each element of the group NW is connected to the counting input of the same name group counter, the output of each .i-th trigger of the models of the matrix futons is connected to the j-th input of the i -th element of the IPI group (where i, j I, 2, ... 5 N). Editor E. Kopcha Compiled by T, Sapunova Tehred E.Chilsmar Order 4410/44 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5 Production and printing company, Uzhgorod, Proektna str., 4 Proofreader L.Pklipenko