SU955173A1 - Device for checking pupils' knowledge - Google Patents

Description

The invention relates to automation and computing, in particular to devices for the automated acceptance of examinations, examinations and the consolidation of knowledge. The students are trained in new material, and can be used in various establishments. It is known to the device) that contains a coding block, dividing diodes, a block of correct answers, a block of incorrect answers, a switch of question numbers, Reset buttons, Answer buttons, a relay, power switches Cl3. A disadvantage of this device is its complexity and the low efficiency of the exam acceptance process. Of the known devices for automated control of students' knowledge, the closest to the present invention is a device comprising a series-connected response readiness switch, an answer input switch, a question coding element, a ticket changer switch, and correct and incorrect response recorders made on a relay, a reset reset switch, power buses, correct and incorrect response indicators, and a time delay element. However, the presence of a ticket changer considerably complicates the work of the student with the device, and this device also has low reliability and high power consumption, since all the relays of the device are constantly powered by a voltage that ensures their reliable switching on. The purpose of the invention is to simplify the device, allowing it to simplify the work of the student with the device, increase its reliability and reduce energy consumption.

3955

The goal is achieved by the fact that a known device comprising a response readiness signal switch, an answer input unit and a question coding unit, a response reset signal switch and a recorder, a delay element whose input is connected to the first output of the readiness signal selector switch, are connected in series, and a group of registrars, a switch is introduced, the output of which is connected to the second output of the recorder and the inputs of the recorders of the group, the first input to. the output of the delay element, and the block node, the input and output of which is connected respectively to the second output and the first input of the ready response switch, the second input of which is connected to the output of the response reset switch, the output of the recorder is connected to one of the series-connected recorders of the group.

The blocking node contains accumulation and separation elements, the outputs of which are the output of the node, the input of the accumulation element is the first input of the node, and the input of the separation element is the second input of the node.

The drawing shows the scheme of the proposed device for monitoring students' knowledge.

It contains a response input block 1, a question coding block 2, a switch a switch 3 response ready signals, a response recording block k, a delay element 5, a switch 6 for resetting answers, a diode 7, a capacitor 8, a first 9 and a second 10 power bus, input terminals 11 and 12 meals.

Block 4 of the registration of answers includes registrars 13 (individual answers) and dinistors 1. The number of registrars 13 is equal to the number of questions in the ticket. The registrar 13 contains elements 15 of the correct answers memory with contact groups 16-18, elements 19 of the memory of incorrect answers with contact groups 20-22, indicators 23 of the correct answers, indicators of incorrect answers. The diode 7 and the capacitor 8 are the blocking node 23, and the dynistors It are combined into a switch 26.

The device for monitoring students' knowledge works as follows.

Pressing the switch 6 examines the device to its original position. At the same time, none of the indicators 23 and 2 is on. In the process of controlling knowledge, the student offers a series of questions with several answers to them. Students must take turns starting from the first to answer all questions.

At the same time, when answering a question, the student puts the switch to input the answers of unit 1 to the position that, in the examiner's opinion, corresponds to the correct answer. Press the switch 3. If the answer is done correctly, then power is supplied directly to the dynistor T connected to the element 15 and to the delay element 7. At the same time, due to the time delay, the dynistor 14 opens and the element 15 of the first question recorder 13 is triggered, the first question indicator 23 is turned on and the correct answer is eliminated and the possibility of correcting the answer is eliminated by breaking the power supply circuit of the element 19 storing the wrong answer in the first answer recorder 13 . If the answer is incorrect, the power is supplied only to the dinistors lA connected to the elements 13 of the memory of the wrong answers. When one of the elements 15 or 19 of the recorder 13 is triggered, one of the normally open contacts 18 or 22 closes and the power will be supplied to the recorder 13 answers to the second question.

In answering subsequent questions, elements 15 and 19 of the memory for correct and incorrect answers work in a similar way.

Claims (2)

In the device, terminals 11 and 12 are supplied with a voltage lower than the switching voltage of the relay elements 15 and 19. A capacitor 8, a diode 7 and one group of contacts of the switch 3 are used for increasing and the voltage sufficient to turn on the relay. In the initial position of the switch 3 the capacitor 8 is connected via diode 7 to the power supply buses 9 and 10. When the switch 3 is pressed, the capacitor 8 is connected in series with the power source and the voltage on the capacitor 8 becomes sufficiently 595 to switch on the corresponding dynistor T and the relay, element 15 or 19. If you press the switch 3 again, dynistor k connected to. the switched on element 15 or 19 does not work, because the voltage of switching on the dynistor and the more the voltage of the power supply. In block 2, the tires with the position input driver of the position block 1 are connected to the tires coming from the dynistors I connected to the elements 15 in such a way that if the answer to the question is incorrect, the indication of this question number is included with the wrong answer, and if the answer is correct The question includes an indication of the question number with the correct answer. The use of the proposed device circuit in comparison with the known one allows to simplify the work of the student with the device, since it eliminates unnecessary control, increases the reliability of the device and reduces power consumption, since the relay is powered by a lower voltage (voltage, lower voltage than the relay operates) 1 Claims 1. A device for controlling students' knowledge, containing sequentially switched on a switch, readiness of response, a response input block and a question coding block. 6 are connected in series with a response reset signal switch and a recorder, a delay element whose input is connected to the first output of a response ready switch, and a group of recorders, characterized in that, in order to simplify the device, it contains a switch whose output is connected to the second recorder input and the inputs of the recorders of the coding block of questions, the second input to the output of the delay element, and the blocking node, the input and output of which are connected respectively to the second output and the first input Atel ready response signals, the second input of which is connected to the output of the switch response reset signals output recorder connected to one of a group of serially connected registers. 2. The device according to claim 1, wherein it contains the accumulation and separation elements, the outputs of which are the output of the node, the input of the accumulation element is the first input of the node, and the input of the separation element - the second input node. Sources of information taken into account in the examination 1. Collector In the aid of amateur radio, vol.55. M., 1976, p. 1-6. 2. USSR author's certificate number 7b39 7, cl. G 09 B 7/02, 1979 (prototype).