SU877599A1 - Device for checking students knowledge - Google Patents

Description

The invention relates to the technical use of KIM teaching aids and can be used as a device for controlling knowledge of students in practical classes, laboratory work, colloquiums and tests. . A device for knowledge control is known, which contains input units for the standard response and responses of students with coding blocks, a decoder whose output is connected to a rating indication unit, push counters and summing blocks, the number of which corresponds to the number of outputs of the encoding blocks, each summing block including The adder itself is a Pb module two and a memory element whose output is connected to the input of the adder, the inputs of the counters are connected to the input block, and the outputs through the logical element I to the input of the decoder, and We OR and sootvetstvugatsie summiruyustsie units are connected to the other input of the decoder ch Such a device may be non-Odir blki cheree scheme. Used only for certain types of controls. In addition, / it does not control the response input sequence, which in many cases is mandatory. The closest technical resolution to the proposed one is a knowledge control device containing a questioning unit, the first output of which is connected to the input of the response input unit, and the second output is connected to the input of the display unit and the second input of the correct answer counter connected to the input the display unit, the response input unit, the second output of which is connected to the first input of the counter of correct answers / the first output of the input input unit is connected to the input of the question questioning unit containing the number indicator in polls, the answer coder, the question counter and the decoder, whose input is connected to the output of the question counter, the first exit to the inputs of the question number indicator and the coder of answers / the second exit to the input of the question counter and the output of the U2J block. In this device, as an element that determines the sequence of correct answers to the proposed questions, is the answer encoder. It allows you to arbitrarily assign button numbers of correct answers at the preparatory stage of the survey question. When moving from one ticket control to another one, the sequence of pressing the buttons to enter the correct answers will change randomly each time. Therefore, this knowledge control device allows, without changing the setting of the button numbers of the correct answers, to control only one ticket. Conducting the control of knowledge of several groups of students on one and the same ticket makes guessing possible, thereby reducing the accuracy and effectiveness of the control of knowledge. Replacing tickets requires the assignment of other numbers to the correct answer buttons, i.e. To have a device for working with new tickets.

The purpose of the invention is to improve the accuracy of the assessment of students' knowledge.

The goal is achieved in that the device containing the response input unit, the first and second outputs of which are connected to the first input of the evaluation unit and to the input of the comparison unit, the output of which is connected to the second input of the evaluation unit and the first input of the display unit, the second input of which connected to the output of the evaluation unit, the switch has a memory block and a response encoder, the first input of which is connected to the memory block, and the second input is connected to the output of the switch connected to the first input of the block a memory input and a second input switch block memory connected to the output of the input answers, and the switch outputs the block memory responses and encoder connected to the inputs of the comparison unit and display unit.

The block diagram of the device image 1 female in the drawing.

The device contains a block of input of answers, a block of 2 comparisons, a block of 3 assessment units, a block of 4 indications, a switch 5, a block of memory b, an encoder 7 of responses.

The wake-up input unit 1 has the following controls:. Answer-answer input buttons. I don’t know, resetting the device to its initial state. Reset, operation mode switch for 4, -6, 8 questions. Questions, button for indicating the correct answer to the next question. button indicating questions that were given the correct answers Control P / N.

The device for knowledge control works as follows.

The initial state is determined by the absence of information in the memory block 6. At the same time, the display unit 4 outputs option 0000. Switch 5 switches the first channel, which

associated with the first element of the memory storage unit, the evaluation generation unit 3 is in the zero state.

Before carrying out the control on the block 1, the input of answers is set to 4, b or 8 questions. A control card option is set up, which is a four-digit number from 0001 to 9999. At the same time, on the first exit

Q block 1 input responses are formed by two signals. The first, in the form of a single rectangular pulse, is fed to the input of the switch 5 and causes it to trigger. This happens when you press any of the input buttons options, answers. The first four channels of the switch 5 connect in series the four elements of the memory block 6, which fix the set option. Starting from channel p

0, the switch 5 disconnects the memory block from the response input block 1, controls the operation of the response encoder 7, determines the question number of the control card. Display unit 4 flashes

5 this number.

The second signal is determined by pressing the answer answer input button, corresponding to the digit of the option or answer number being set.

 This signal goes to the first input.

 the memory block when the option is installed and to the first input of the comparison block 2 when entering responses.

After installing the option encoder. 7 replies managed by the switch

5 5, using the information of the memory block, using a certain sampling system, generates a signal corresponding to the number of the correct answer to the next question. This signal comes to

0 the second input of the comparison unit 2 and the first input of the display unit 4. At the same time, the display unit 4, when the P. button is on, responds with the correct answer. Possible numbers of correct answers are from 0 to 7. A zero answer corresponds to the case, if among the given answers there is no correct one.

At the output of comparator unit 2, a single rectangular pulse appears each time the signals on

its two inputs coincide, i.e. when you enter the correct answer. The occurrence of this pulse at the second input of the evaluation unit 3 changes the state of the unit to 5. - The formation of the overall evaluation by the block is carried out depending on the signal received from the second input of block 1, the input of responses to the first input of block 3 of the form of the estimate. This signal determines the mode of operation of the evaluation unit 3, depending on the control of 4.6 or 8 questions.

When a pulse appears at the second input of the display unit 4

Claims (1)

Claim A device for monitoring student knowledge, containing an input block answers. the first and second outputs of which are connected to the first input of the formation, evaluation unit and to the input of the comparison unit, the output of which is connected to the second input of the evaluation unit and the first input of the display unit, the second input of which is connected to the output of the evaluation formation unit , characterized in that, in order to improve the accuracy of assessing students' knowledge, it contains a switch, a memory unit and an answer encoder # whose first input is connected to the memory unit, and the second input is connected to the output of the switch connected to the first input of the unit memory, the input of the switch and the second input of the memory unit is connected to the output of the response input unit, and the outputs of the switch, memory unit and response encoder are connected to the inputs of the comparison unit and the indication unit. - 10