SU526895A1 - A device for obtaining tests of irrevocable combinational circuits - Google Patents

Description

of the diagnostic test obtained from the “collection of the complete Pro-in test”. In practice, it is expedient to first test the operability of the combination scheme as the basis of a full irrigation test, which is included in the total diapathy test. In the absence of a malfunction (the need for further checks of the outbreak (et. If a fact is found to be defective), it is necessary to remove its appearance and aiecT.a it is necessary to implement the remaining “test abortions that make it up — in L1p01 | most important, but in total with dialysis test. As a result, the consumption of the NREDRED scheme and the time of the monitoring are reduced.

The aim of the invention is to increase the efficiency of working devices for obtaining tests of uncomplicated combinations of circuits.

The goal is achieved by the fact that the device contains a power unit connected by a control input to the second output of the control unit and an input to the second output of the switch of variable elementary conjunctions, the I element and the test indicator of the checking test, the input of which through the I element is connected to the output of the memory block.

This makes it possible to isolate the complete testing tests from the resulting tests.

The device diagram is shown “in the drawing.

The device contains 6vTOK control 1, a switch of variables of logical functions 2, a switch of alternative electronic conjunctions 3, an indicator of test iHai6opoiB 4, a block of memory 5, element I 6, and an indicator of sets of checking test 7.

The control unit 1 by the first output of the SWITCH to the input K01 of the switch of variables of the logic function 2 and the control input of the switch of variables of elementary conjunctions 3, the input of which is connected to the output of the switch of the switch of variables of the logical function 2. The second output of the control block 1 is connected to the control input of the block Memory 5, iKOToporo 1 input is connected to the second output 1 of the switch of variable elementary conjunctions 3. First | Fourth output of a co1M1 switch: Torus 3 is connected to the input of the indicator | a of test sets 4. The input of the indicator 7 is connected via an And 6 to I element 5 move the memory block.

The control unit 1 serves to supply the voltage of the memory source to the switches 2 and 3, to remove the voltage from the memory unit 5, and is a switching device for performing the functions.

The convoluted logic function switch 2 is intended for input of variables of the logic function 1CO "T1 of the current K01 hybrid scheme and is a Hai6op switching elements, for example switches, in the switched state of which the corresponding outputs are connected to the input.

The switchboard of variable elementary conjunctions 3 serves to introduce variable elementary: logic functions and is a set of switching elements, for example, switches with three fixed stable states. In the neutral position, their first outputs of the switch are connected to its input,

in ONE of the switched-on positions, the second ones are: the outputs are connected to its control input, and in the other B1KEY6NN position IK to the control input, both outputs are connected to the switch a 3.

I1NDI1kator test sets 4 1П1 represents a 1 set of indicative: elements, displaying information about test sets in binary code.

The block | MI 5 serves to store information about the presence of 1 variables in elementary conjunctions and contains elements whose number is determined by the possibility of the device.

Element 6 is designed to perform

the logical | test of And, and the indicator of the test test sets 7 signals about the receipt of the minimum number of sets of the diagnostic test, which together comprise a full test test. Indicator 7 is, for example, an indicator element.

The device works as follows. In the initial position of the device, all the switching elements are in the switched off or neutron H1M position.

To determine the sets of explosives, with the help of the switch of variables of logical function 2, the variables of the inverse logical function are set, and with the help of switchboard of alternate elements, 3 are variables of one of the elementary conjunctions of logical function. With the supply of voltage from the control unit 1 to the switches 2 and 3, the test test sets 4 will display

information about so1stoi.i. variables in this test .abor. To obtain other discontinuities, using the commutator of variable elementary conjunctions 3, variables of other conjunctions are introduced at different positions (commuting elements of the switch (variable of the logical function 2. When all conjunctions are entered in turn, all sets of the full diagnostic test are received).

When variables are displayed using (switch 3., block 5 of them remembers them. When all the variables of the logic function are entered, the indicator of sets of tests will turn on (see test 7). This indicates TOIM that all sets of discontinuity a received before and at the moment of turning on the indicator are included in the (verification test).

Before receiving sets of shchu.tirovani with the help of the control unit | Controls 1, the And the And:: power supply source is removed from the memory unit

5, as a result of which its memory elements return to their original state and de-energize the battery on the test sets. For 01P | definition of shashtiyabori with

by means of (switchboard.a pdremevnyh LOGICHRLK-OY

Fuctions 2 ".abIre ne, identical to logical functions, and with the help of a coM mutator of variable elementary variables, 3-variables are one of the elements of co-ordinations of a disjunctive normal form of inverse choptic futures. With the supply of “A1H1p” from the control unit 1 “and the switches 2 and 3, the indicator of test signals for 4 shows a message about the state of variables in this test: set. To obtain other Ha6oipOiB Shunting using a Commator 3, enter variables — other onions with the constant position of 1 AT coad mutating elements: M1 switch. When alternately entering all the condi- tions, all sets of shunting a complete diagnostic test are alternated.

When inputting variables from P10, the Mutator M mutator 3 memory block 5 stores them. When you enter all nqpeMeHHbix and iveronic logic functions, the indicator of the test tester probes 7 turns on. This indicates that all shunting kits obtained before and in the MOiMeHT turn on the indicator are included in the test.

Combining all of the n: abortions that have been obtained and obtained, a complete diagnostic test is obtained for this combination scheme. All interleaved rupture and shunting kits, obtained before and at the moment of including the indicator 7, receive a complete testing test, which is included in the received and d and a nest.

In some particular cases, the 1P | rover test may be diagnostic.

But always the testing test will be completely

enter -in H. YAGNOSTICH6SK1 Y.

Form m u l a p 3 o b e e e

A device for receiving tests of non-repetitive combinational circuits containing a control unit, a 1COMMutator of variables of a logical function connected to an input with a first output of a control unit, and a switchboard of variable elementary conjunctions whose input is connected to an output of a switch of variables of a logic function that controls

input to the first output of the control unit; the first output is connected to the input of the test set indicator, characterized in that, in order to increase the efficiency of the device, it contains a memory unit connected by a control input to the second output of the control unit and an input to the second output of the switch variables of the elementary conjunctions, the element And and the indicator of the sets of the checking test., whose input

through the AND element is connected to the output of the memory block.

Sources of information taken into account in the examination: 1. US Patent N ° 3614608, 32473R, 19.10.72.

2. Description of the invention according to the application LJ 1914008 / 18-24 dated 03.05.73, according to which the decision to issue the author's certificate was made.