SU1111192A1 - Device for checking knowledge levels of trainees - Google Patents

Abstract

A DEVICE FOR CONTROLLING KNOWLEDGE OF STUDENTS, containing sequentially included response input block and the first comparison unit, the second input of which is connected to the first output of the question code generator, and the series-connected odnotots counter, the first register, the second comparison unit and the registration block, the second input of which is connected to the second the output of the rating counter, the third of which is connected to the second input of the second comparison unit, the second output of which is connected to the input of the question codes generator, connected in series the generator, the second register and the first element I, the second input of which is connected to the output of the first comparison unit, and the output to the first input of the rating counter, the second input of the second register connected to the second output of the question codes generator, the generator input is connected to the second output of the response input unit, characterized in that, in order to improve the accuracy of the device, an inverter and a serially connected code converter, a third register and a second element & are entered into it, and the output of which is connected to the second C input of the counter, In the first comparison unit, the inverter is connected to the second input of the second element I, the input of the encoder is connected to the second output of the question codes, the second, third and fourth outputs of the generator are connected respectively to the second input of the third register, the second input of the first register and the third input of the second block comparison.

Description

The present invention relates to automation and computer engineering, in particular to technical means of training, and can be used in the organization of the educational process with elements of software training in various educational institutions.

A device is known that permits a computer-controlled objective control of the knowledge of students successively in any courses available in the question formation unit of these devices. The calculator of this device solves the problem of objectivity as a classical problem of mathematical statistics, namely, the volume of a set of values of a random variable x (x is the evaluation value for the answer to a question) is cleared out of the total population N (N is the number of questions of the course being monitored) so that The arithmetic mean value of x in an arbitrary sample with a probability of at least PQ differed from the mathematical expectation of the estimate x (x is the value of the estimate adequate to the actual level of expectation) by no more than L D3

The disadvantage of this device is that to implement the process of objective control by this device, a specialized calculator and memory device is required to store the current values of the estimates and intermediate counting results.

It is also known a device comprising a response input unit connected to an answer analysis unit connected to a question generation unit and a rating counter connected to a calculator and a comparison unit connected to a question generation unit and a registrar of estimates, and a question counter connected to the formation unit question and unit of comparison.

This device provides an objective control of students' knowledge with a given accuracy of the control results by calculating the number of questions (directly in the control process) that the student must ask to test his knowledge. The calculator of this device is controlled by the device.

results of computational operations 2.

A disadvantage of this device is that to calculate the required number of questions posed, a calculator is required, which has a complex structure and a significant memory object for storing an array of intermediate values.

It is also known a device that uses an organi zation of the process of objective control of knowledge of a method, which, for the case under consideration, can be formulated as follows: with an increase in the number of test questions presented by KOH to a specific student, the arithmetic mean of X will tend to the value of the estimate corresponding to the actual level of , at a controlled subject rate X 3Jj

The technical implementation of this method of knowledge control of trainees is carried out by a device containing a sequentially connected response input block, a first comparison block and a rating counter, a second comparison block connected directly to the registration block, and through a question generator to the first comparison block connected to a rating counter and a second comparison unit connected to a rating counter connected to the registration unit.

This device does not take into account the element of complexity and importance of issues. The assessment of the most complex and important issues is equal to the weight of secondary issues. In this connection, the device has a low accuracy of knowledge control.

The closest in technical essence to the proposed is a device that uses a method for organizing the process of objective control of knowledge, which for the case under consideration can be formed as follows: with an increase in the number of test questions presented to a particular student, control arithmetic mean value of x will tend to adequate the actual level of knowledge of the student in a particular subject course X and 3 The technical implementation of this method of knowledge control was carried out a device containing a serially connected response input unit and a first comparison unit, the second input of which is connected to the first output of the question codes generator, and the series-connected estimation counter, the first register, the second comparison unit and the registration unit, the second input of which is connected to the second output of the rating counter , the third output of which is connected to the second input of the second comparison unit, the second output of which is connected to the input of the question driver, a series-connected generator, a second register and the element, the second input of which is connected to the output of the first comparison unit, and the output to the first input of the rating counter, the second input of which is connected to the output of the second register, the second input of which is connected to the second output of the question codes generator, the input of the generator is connected to the second output of the unit input answers. This device does not differentiate (distinguish) the complexity and importance of questions according to the type of answer. Thus, knowledge of the basic fundamental concepts (the simplest questions) is assessed by the same weight of assessment as their lack of knowledge, similar to the thorough meaning of the subtleties of the subject (the most difficult questions) estimated by the same weight of assessment, as their ignorance, for example, in the field of mechanics, knowledge of the formulation of laws. Newton (the simplest questions) can not have a large weight of assessment, but their ignorance should have the other way around, the greater weight of assessment. Conversely, the solution of the most difficult task with the application of these laws should be evaluated by a high coefficient of assessment, the incorrect solution of this task, as the most difficult, should be evaluated by a low weighting coefficient of assessment. In this connection, the device has a low accuracy of knowledge control. The aim of the invention is to improve the accuracy of the device. The goal is achieved by the fact that a device for controlling the knowledge of the trainees, comprising a series-connected response input unit and a first comparison booster. 924, the second input of which is connected to the first output of the question code generator, and the serially included evaluation counter, the first register, the second comparison unit and the registration unit, the second input of which is connected to the second output of the evaluation counter, the third output of which is connected to the second input of the second comparison unit, the second The code of which is connected to the input of the generator of the question codes, the generator connected in series, the second register and the first element I, the second input of which is connected to the output of the first comparison block and the output with the first input of the rating counter,; The second input of the second register is connected to the second output of the question codes generator, the generator input is connected to the second output of the response input block, the inverter and the serially connected code converter are entered, the third register and the second And element whose output is connected to the second counter input, the output of the first comparison block through the inverter is connected to the second input of the second element I, the input of the code converter is connected to the second output (Former of the question codes, the second, third and fourth outputs of the generator are connected Respectively with the second input of the third register, with the second, the input of the first register and the third input: the house of the second comparison unit. Fig. 1 schematically shows a device for monitoring students' knowledge; Fig. 2 shows a pulse-frequency generator. 2 ratings, block 3, input of answers, driver 4 question codes, comparison block 5, registration block 6, register 7 (estimates rejection signals), element 8, register 9 (memory of the weight of the question with the correct answer) generator 10 (bursts of impulses), converter II codes, p Trunk 12 (memory issue weight with incorrect response), an inverter 13 and AND gate 14. The register 7 adapted to generate current deviations estimates and is designed as a form-in computing the difference register. The next code for the mean value of the estimate produced by counter 2 is fed to register 7, as a result of which the previous value of the average score is replaced by a new one, and at the output of register 7, the difference code of these values is obtained, which goes to one input of the comparison unit 5. To another input of block 5 from the output and counter 2, a code is received. A value of NII- equal to three percent of the current value of the estimate. The code for this value is obtained by physically excluding from the code the output value of the counter 2 lower bits (the so-called logical shift to the right by five bits). For To increase the accuracy of obtaining the code of this value, a code converter (not shown) can be installed at the output of counter 2. However, with real control of students' knowledge, there is no need to install a code converter. Block 5 performs a logical comparison of the codes J entering from register 7 and from counter 2, and when the latter is exceeded over the first one, a signal is generated by which block 6. prints the average value of estimate obtained from counter 2. Otherwise, at the output of block 5, a signal appears to continue the process. The generator 10 provides the synchronization of the entire device and contains a trigger 15, the generator 16 counter 17, the decoder 18, the delay element 19. The generator 10 operates as follows. When the signal from block 3 is applied, three ger 15 is set to one state and the generator 16 is put into operation. After lp impulses, M is greater than or equal to: the maximum number of bits of registers 9, 12, (M + t) pulse from the output of the decoder 18 enters the resolution register bus 7 and the next code of the mean estimate value, which is readable by the counter 2, goes to register 7. (m-2) the generator 16 pulse from the output of the decoder 18 is fed to the resolution 5 bus of the block 5, which implemented em code comparison. After this, the signal from the depotfrator 18 triggers the 15 state to the zero state and the generator 18 turns off. Element 19 serves to eliminate spurious signals when switching the triggers of the counter 26 17 and is connected to the resolution bus of the decoder 18. The device for controlling the knowledge of the students works in a consistent manner. When the device starts, the driver 4 causes the student to learn one of the controlled course questions (when power is turned on, all elements of the device are automatically set to zero (initial) state - the device automatically installs the device to control students' knowledge when the power is turned on (not shown). At the same time 9 of the former 4 records the weight of the complexity and importance of the question k 1,2 3 ... with the correct answer, and register 12 with the transducer of the gate 11 records the weight of the complexity and importance of the question K .1,2,3 ... with the right response (the converter 11 can be made according to computer-known circuits), the correct answer circuits are switched and a lock is made to prevent the same question from being repeated in the current control series. When the correct answer code is typed in block 3, the indication circuit is switched the correct answer and the chain of transmission of the correct answer to counter 2 through element 8. At the end of the dialing of the correct answer code, the signal from block 3 starts generator 10, thanks to the operation of which the output regis pa 9 is provided number of pulses, equal to the weight and complexity of the importance of this issue. In this case, the AND 8 element is opened as many times as pulses from the output of register 9 are fed to its input and the correct answer is recorded in counter 2 as many times as the weight of this question. If the question is incorrectly answered at the output of the inverter 13, a signal appears (there is no signal at the output of block 1), the transmission circuit of the wrong answer is switched to counter 2 via element 14, and due to the operation of generator 10 from the output of register 12, the number of pulses equal to the weight of complexity and the importance of this question in the malfunction / 1nbm answer. In this case, the AND 14 element is opened as many times as pulses are output from the output of register 12, and the counter 2 records the wrong answer as many times as the weight of this question with the wrong answer. As a result, the output of the counter 2 appears each time the code of the mean value of the estimate, which enters the register 7, and with the number of questions posed, the signal arriving at block 5 of the comparison appears less. As a result of this, when register 9 is zeroed out, shaper 4 presents one of the questions of the course being monitored. Then the cycle is repeated. When the number of questions presented is greater or equal, the average value of the estimate appears at the outputs of counter 2. The transformed value of which is fed to one of the inputs of block 5, and the net value of the generated value to register 7, resulting in the output of the last is the code for the difference of the mean value of the estimates, the value of which is fed to another input of block 5. When the value of the code from register 7 exceeds the transformable code from counter 2, block 5 generates a signal that generates l 4 places a uchaschemus one of the questions controlled rate. Then the cycle repeats. Otherwise, block 5 generates a signal by which block 6 prints the average value of the estimate obtained from counter 2. In this case, the monitoring of this cycle ends. The proposed device for controlling students' knowledge, due to the differentiated consideration of the complexity and importance of each question by the type of answer to it, allows for an increase in objectivity and, consequently, accuracy in the control of knowledge.

VlokZ

15

К 5/1 о к

18

17

Kdlokai .12

Claims (1)

DEVICE FOR CONTROLLING KNOWLEDGE KNOWLEDGE, comprising sequentially included response input unit and a first comparison unit, the second input of which is connected to the first output of the question code generator, and the grading counter, the first register, the second comparison unit and the registration unit, the second input of which is connected to the second the output of the grading counter, the third output of which is connected to the second input of the second comparison unit, the second output of which is connected to the input of the question code generator, sequentially connected to a herator, a second register and a first element And, the second input of which is connected to the output of the first comparison unit, and the output is connected to the first input of the grading counter, the second input of the second register is connected to the second output of the question code generator, the input of the generator is connected to the second output of the response input unit, characterized in that, in order to increase the accuracy of the device, an inverter and sequentially connected code converter, a third register and a second AND element, the output of which is connected to the second input of the counter, are introduced into it, the output of the first block comparison through an inverter connected to the second input of the second AND gate, a code converter input coupled to the second output of the code issue, second, third and fourth generator outputs connected respectively to the second input of the third register, ie the second input of the first register and the third input of the second comparator unit.