SU1149302A1 - Device for checking knowledge levels of trainees - Google Patents

Abstract

A DEVICE FOR CONTROLLING KNOWLEDGE OF STUDENTS, containing sequentially included a trainee response input unit, a generator, the first element OR, the first element AND, the first pulse distributor, the elements I. the first group, the registration unit for incorrect answers and the registration unit for correct answers, the output of which is connected to the second the input of the block of registration of incorrect answers, the first delay element, the first pulse shaper and the series-connected second pulse shaper, the second delay element, in the second element OR, the second pulse distributor and the elements AND of the second group, the outputs of which are connected to the second input of the correct response registration unit, the second inputs - with the output of the second pulse generator, and the third inputs - with the second output of the first pulse distributor, the third output of which is through the first element the delay is connected to the second input of the first element And, and the second input directly to the output of the second element OR, the second input of which is connected to the output of the first pulse generator, the second inputs of the element The first group is connected to the output of the second delay element, characterized in that, in order to expand the didactic capabilities of the device, a block of AND elements and subsequently connected block of pulse formers, a third OR element, a third pulse distributor, a trigger, a third delay element, and the second element And, the second input of which is connected to the output of the first element OR, and the output to the second input of the second pulse distributor, the third input of which through the block of elements AND is connected to the second you odes pulse shaping unit and the third pulse distributor, a second input coupled to an output of the second OR element connected to the second input of the flip-flop, the input of the pulse odds tors, connected to the output CO of the input unit the learner responses. with

Description

The invention relates to automation and computing, in particular, to devices for the automated acceptance of examinations, examinations and the reinforcement of students' knowledge in studying new material, and can be used in various educational institutions, as well as in industrial enterprises in training departments.

A device for controlling the knowledge of trainees is known, comprising a series-connected readiness switch, an encoder, a ticket changer switch, correct and incorrect response recorders, an answer reset switch, power ratios, correct and incorrect response indicators, a time delay element 1.

The disadvantages of this device are as follows.

It is suggested to choose the correct answer from 3 - 5 alternatives. At the same time, a large number of incorrect answers are perceived and comprehended, and the possibility of “storing an incorrect answer in the memory, which may be perceived as correct, is not excluded. You can guess the correct answer, without understanding the meaning of the question, this guessing can occur both randomly and as a result of analyzing alternatives according to formal characteristics - along the length of the answer, according to its plausibility, according to its grammatical structure. It is possible to arrive at a correct answer as a result of incorrect reasoning, since the answer fixes the final result of the thought, and not the process of its flow.

The student becomes accustomed to working with ready-made formulations, which may make it difficult to independently construct an answer, and associates the student's own thinking.

However, some of the shortcomings can be eliminated by rational, methodically thought-out questions and alternative answers, but this requires high professional skills in accordance with selective answers, the need to compose programmed questions, which takes a lot of time for highly qualified specialists.

A device for controlling students' knowledge is known, comprising a student console connected in series, a delay element, a switch of questions and a registration unit, an OR element connected in series, a counter and a block of AND elements, the second input of which is connected to the first terminal of the student console, and the output to the second input of the switch questions, the second input of the counter is connected to the second output of the student console, the first and second inputs of the OR element are connected to

the first and third outputs of the student console, respectively 2.

This device allows the student to independently construct answers of unlimited length. However, in many situations, for correcting the learning process, it is not so much the fact that the trainee has received a final answer, but the method of finding the latter, its rationale. In this case, it is necessary

0 taking into account the ambiguity of the analyzed solutions and the formed response of the student. Control of the student's answers to questions that can be given multivalued answers, the known device is not

with produces.

One of the effective ways to solve this problem is to use some of the provisions of the recently developing theory of semantic scientific information chain (informatics).

0 In particular, an apparatus for solving information and logic problems can be involved in the analysis. The characteristic aspects of machine analysis of this class of tasks are the presence of a significant amount of information processed, the logical nature of its processing, and the need to use some abstract formalized language suitable for transferring information from the student to the machine.

Using Formal Language

0 is especially obvious when there are a large number of possible answers to a question asked to the student. In this regard, a formalized language is defined as a certain formal model of the natural language, freed from various kinds of synonymous and random layers and providing certain rules for recognizing the student's correct and incorrect answers, as well as their equivalent modifications. FW performs at the same time

0 as a simiotic (sign) system that adequately reflects the objective logic of the described subject area.

The closest in technical essence to the present invention is a device for monitoring students' knowledge, containing sequentially included correct response recorder and incorrect response recorder, the first delay element and the first pulse generator, the learner’s aggressor input unit, the pulse generator, the first element OR , element And, the first pulse distributor and elements And the first group, the second pulse generator connected in series, the second element And LI, the second pulse distributor and the AND elements of the second group, as well as the second delay element, the first output of which is connected to the input of the second OR element, the second output to the second inputs of the AND elements of the first group, and the input to the output of the first pulse shaper connected to the second to the inputs of elements AND of the second group, the outputs of which are connected to the corresponding inputs of the recorder of correct answers, and the third inputs - to the second output of the first pulse distributor, the third output of which is connected through the first delay element To the second input of the element AND, the first and second inputs of the second pulse distributor are connected respectively to the outputs of the first and second elements OR, the outputs of the element AND of the first group are connected to the corresponding inputs of the recorder of incorrect answers 3. The disadvantage of the known device is that it does not allow control of the student's answers to questions that can be given multivalued answers. The purpose of the invention is to expand the didactic capabilities of the device by ensuring that the learner’s responses are monitored on questions that can be answered with multiple answers. The goal is achieved by the fact that the device for controlling the students' knowledge, containing the trainee's response input unit, the generator, the first OR element, the first AND element, the first pulse distributor, the AND elements of the first group, the incorrect response registration block, and the correct response registration block , the output of which is connected to the second input of the registration block of incorrect answers, the first delay element, the first pulse shaper and the sequentially connected second shaper named after pulses, the second delay element, the second OR element, the second pulse distributor and the elements of the second group, the outputs of which are connected to the second input of the correct response registration unit, the second inputs to the output of the second pulse driver, and the third inputs to the second output of the first pulse distributor, the third output of which through the first delay element is connected to the second input of the first element ta AND, and the second input directly to the output of the second OR element, the second input of which is connected to the output of the first formate pulses, second inputs of elements AND of the first group are connected to the output of the second delay element, a block of elements AND and a series-connected block of pulse drivers are entered, a third OR element, a third pulse distributor, a trigger, a third delay element and a second And element, the second input of which is connected to the output the first element OR, and the output with the second input 114 2 of the second pulse distributor, the third input of which is connected to the second outputs of the pulse shaper unit and the third one pulse pulse, the second input of which is connected to the output of the second OR element connected to the second trigger input, the input of the pulse driver unit is connected to the output of the learner response response input block. FIG. 1 shows a functional diagram of the device; in fig. 2 - newly introduced blocks and their interrelation with other nodes of the device. The device for controlling the students' knowledge contains the trainee response input unit 1, consisting of buttons, the number of which is equal to the number of elements from which responses to the ticket can be generated, generator 2, element OR 3, distributor 4 pulses, distributor 5 pulses, element 6 delays, element 7, pulse generator 8, delay element 9, element OR 10, driver 11 pulses, group 12 And elements, group 13 And 13, block 14 of registration of correct answers, block 15 of registration of incorrect answers, block 16 pulse formers unit 17 elements AND, element OR 18, distributor 19 pulses, trigger 20, delay element 21, element AND 22. A separate symbol is assigned to each button of block 1. For example, if the answers are constructed only in digital form, then the number of buttons will be equal to ten, and each of them will be assigned one of the characters of the numerical range from O to 9. When you click on any of the buttons of block 1, generator 2, performed according to the scheme of the pulse distributor. The number of pulses emitted by generator 2 depends on the button symbol, which is pressed. Pressing the button with the symbol “1 from the output of the OR 3 element will remove one pulse, and pressing the button with the symbol“ 2 from the output of the OR 3 element will If you take two pulses, etc., if you press the button with the symbol “O from the output of the element OR 3, ten pulses will be removed. From the output of the element And 22 pulses are fed to the clock of the distributor 5, made according to the circuit of the ring distributor with the ability to record the initial information in any bit, and through the element And 7 - to the clock bus of the distributor 4. The minimum number of outputs of the distributors 4 and 5 is equal to the number of questions in the ticket plus one. For example, the maximum number of questions in a ticket is ten, which means that the number of outlets for distributors 4 and 5 must be at least eleven. On the clock bus of the distributor 4, pulses come from element AND 7 thanks to element 6, and the bus is connected to the output of distributor 4 only when you first press any button of block 1. The delay time carried out by element 6 must be no less than the full cycle time generator 2. The delay time of element 2 also selects no less than the time of the full cycle of operation of generator 2. Block 17 (flash 2) contains elements AND 23, the first inputs of which are connected to the first group of drivers 24, the second inputs with certain outlets The signals of the distributor 19. The output of each element 23 is connected to the corresponding information input of the distributor 5. Block 16 (Fig. 2) contains drivers 24 and m pulses, the input of each of which is connected to the corresponding output of block 1 input actions of the student. The outputs of the shapers of the second group of block 16 are connected to the inputs of the element OR 18. FIG. 2 to the first group refers to the formers 24, the inputs of which are connected to the buttons supplied with the indices “1,” 2, “3,“ 4, “5,“ 6, to the second group - the formers 24, the inputs of which are connected to the buttons equipped with the indices “ 7, "8," 9, "O. Certain outputs of the valves 4 and 5 are connected to the inputs of elements And 12, certain outputs of the valve 4 are connected to the inputs of elements And 13. The device works as follows. A student is offered a control ticket, for example, out of ten questions. Each question in the ticket is assigned a certain dead. For example, one of the questions is question number 271060. Let the correct answer to the question posed be numerically expressed as the number 168 or the number 739. The student must enter the numbers 2. 7, 1, O 6, 0. After pressing the button with the index "2, the valve 4 will be set to the position that corresponds to the arrival of two pulses at its input. The distributor 5 cannot change its status when the button with the index 2 is pressed, since there is no signal on any output of the distributor 19 connected with the AND 23 elements. Pressing a button with an index of "7c driver 24, associated with a button with an index of 7, is sent a signal through the element OR 18 to the clock bar of the distributor 19. The distributor 19 is set to the position corresponding to the arrival of a single pulse at its input (at the first output of the distributor 19, connected to block 17, a signal is sent). When pressing the button 2 ku with the index "1 pulse from the imaging unit 24 connected with the button with the index" 1, through the element AND 23 of the block 17, information is recorded in a certain distributor cell 5. When pressing the button with the index "O through the element OR 18 A pulse is applied to the clock bus of the distributor 19. The distributor 19 is set to the position corresponding to the arrival at its input of two pulses (a signal appears at the second output of the distributor, connected with block 17.). When you click on the button with the index "6 pulse from the imaging unit 24 connected with the button" 6, through the element 23 of the block 17 (in Fig. 2 this is the last element And 23 is the count from left to right) information is recorded into another cell of the distributor 5. When pressing the button with the index "O with the driver 24, associated with the button with the index" O, through the element OR 18 to the clock bus of the distributor 19, an impulse is given. The distributor 19 is set to the position corresponding to the arrival of three pulses at its input (a signal appears at the output of the distributor 19 connected to the trigger 20) and the trigger 20 is set to one state, opening after a time determined by the delay element 21 , element And 22 at the first entrance. With further manipulation of the buttons of the block 1 of the information of the distributor 19 is erased, since the distributor 19 is not annular. After entering the question number, the student makes an answer. The answer is also dialed with the buttons of block 1. If the students answer is done correctly, i.e. the buttons of block 1 were sequentially pressed either with indexes "1," 6, "8 or with indexes" 7, "3," 9, then distributor 5 will be set to the position that corresponds to the arrival at its input of either fifteen pulses (1 + + 6 +) or nine-ten pulses (7 + 3 +). The cell of the distributor 5, the output of which is connected to the input of the element 12, the other input of which is connected to the output of the distributor 4, corresponding to the arrival of two pulses at its input, will be in an excited state as it arrives at its input of fifteen and nineteen pulses . When pressed in block 1, the response readiness switch, which controls the operation of the imaging unit 8, from the output of the imaging unit 8, a signal is sent to the input of the And 12 element. From the output of the And 12 element, the signal goes to the correct response recorder of the block 14, which turns on the correct answer indicator . Blocks 14 and 15 are interrelated in their work in such a way that when the correct answer to a question is triggered, the registrar of correct answers to this question is triggered and prevents the registrar from triggering incorrect answers to the same question in the future, and vice versa. the registrar of incorrect answers to the same question and further excludes the triggering of the registrar of correct answers to the same question. If Uchash, Iis received as a result of the decision an incorrect answer, for example, the number 158, and entered it into the device, then the signal from the distributor 5 comes from an output that does not correspond to the arrival at its input or fifteen or nineteen pulses. When a signal is sent from the imaging unit 8, the signal in this case, through element 9 and element I 13, is fed to the registrar of incorrect answers of block 15, which, if activated, turns on the indicator of incorrect answer to this question. The delay element 9 serves to exclude the recorder from triggering block 15 with the correct answer to the question. Simultaneously from the output of the imaging unit 8, the signal is sent through element 9 and element OR 10 to the zero setting bus of distributors 4, 5, 19 and trigger 20 (in the zero state, information is recorded in one of the distributors 4 and 19, one of the information cells is not recorded - all of the cells of the distributor 5 are reset to zero). In the case when the student chose the wrong answer, he can correct it before pressing the response readiness switch by setting the valves 4, 5 and 19, as well as trigger 20 to its original position using the switch that controls the operation of the driver 11 (the switch is not shown ). After clicking on this switch, the student should redial the number of the question and the answer to this question, and then click on the readiness switch of the answer. In the proposed device for controlling students' knowledge, the most time-consuming operation — compiling programmed tickets — is replaced by the operation of encrypting the question number so that after dialing the question and one of the correct answers to it with the buttons of block 1, valve 5 is set to a predetermined position at which from elements 12, a signal will be sent both from distributor 4 and from distributor 5. The question number encryption operation is in fact mechanical, does not require high qualifications and can be held in minutes for the entire ticket. At the same time, the advantage of the device is that the encryption of the question number in it can be carried out not unambiguously, but with an infinite number of options. The device for controlling students 'knowledge provides an exceptional self-formulating of students' answers and entering an device of unlimited length into the device, - - any information volume. It is especially important that mechanical switches are excluded from the device circuit - the device can be performed completely in an integral design, besides has the ability to control knowledge on questions that have multiple answers.

Claims (1)

A DEVICE FOR CONTROLLING KNOWLEDGE KNOWLEDGE, containing a serially connected unit for inputting student responses, a generator, a first element OR, a first element AND, a first pulse distributor, elements I. of the first group, a unit for registering incorrect answers and a unit for registering correct answers, the output of which is connected to the second the input of the unit for recording incorrect answers, the first delay element, the first pulse shaper and the second pulse shaper, the second delay element, the second e an OR element, a second pulse distributor, and AND elements of the second group, the outputs of which are connected to the second input of the correct response recording unit, the second inputs - with the output of the second pulse shaper, and the third inputs - with the second output of the first pulse distributor, the third output of which is through the first the delay element is connected to the second input of the first AND element, and the second input is directly to the output of the second OR element, the second input of which is connected to the output of the first pulse shaper, the second inputs of the elements AND of the second group are connected to the output of the second delay element, characterized in that, in order to expand the didactic capabilities of the device, a block of AND elements and sequentially connected block of pulse shapers, a third OR element, a third pulse distributor, a trigger, a third delay element and a second element are introduced into it And, the second input of which is connected to the output of the first OR element, and the output - to the second input of the second pulse distributor, the third input of which is connected through the block of elements AND to the second outputs of the form block pulse drivers and a third pulse distributor, the second input of which is connected to the output of the second OR element connected to the second input of the trigger, the input of the pulse shaper block is connected to the output of the learner's response input unit.