SU384122A1 - MACHINE FOR GROUP CONTROL "ASSISTANT" - Google Patents

Description

one

The machine for group control is intended for the simultaneous control of the knowledge of a group of students during programmed instruction and traditional forms of study.

Among the technical means of programmed training, group control machines are known. Since the training is conducted in bowls, in general, according to the group method, the prevailing role of machines of this type is natural. Often, automated knowledge control classes are equipped with masks designed for individual use. At the same time, each of these machines has a complete set of equipment for independent information processing.

The overwhelming majority of group control machines (if they are not built on the basis of a digital computer) have at least one of the following disadvantages.

The selective method of entering an answer, while for technical subjects no less important should be considered a numerical method.

The need for a large preliminary preparation for the production of films, punch cards, code chips or other means of fixing the coded information.

Mala efficiency in retraining machines from one subject (theme) to another. As a result, a lot of time is lost or a large number of attendants are required.

2

A rigid rating system and the absence of a two-point rating system, often necessary due to the small informative capacity of input devices and for methodological considerations.

Absence or extremely limited means of automatic prompting, performing to a certain extent the training function} (self-control).

The impossibility of analyzing the answers of students and monitoring the progress of work.

The complexity of the apparatus, its high cost and the need for highly qualified service personnel, which is one of the reasons that prevent the widespread use of these in the public education system.

The purpose of the invention is to provide parallel input of several numbers with different numbers of bits and alternately prompts, erroneous bits in their answers, indicating the position of each error within each syllable of the complete answer word.

This is achieved by the fact that the group control machine contains a partition circuit, one input of which is connected to the output of the comparison circuit, another input to the outputs of the section input units and the scoreboard, and its output is connected to the rating scheme. A machine is a device that operates in a parallel discrete potential code on the basis of comparing the answers of students with one of several variants of reference answers during a sequential survey of workplaces. Evaluation indications are carried out using MTX-90 cold cathode thyratrons located on the scoreboard. At the same time, it is possible to observe the dynamics of students' work. Using one set of warning lights, you can alternately signal erroneous bits of responses. In addition, the scores are printed on a paper tape, designed to be glued to a cool journal. The ten-number system accepted in input devices allows to enter integers, fractional ones, including negative numbers, he also excludes various types of selective method for entering answers. By using the bit pattern in the pattern, the complete word entered into it can simultaneously contain several answers with a different number of bits in each of them. At the same time, the rating according to the tonal system is automatically set depending on the number of incorrect answers at different weights of errors. The entire word of the answer can be estimated in a two-point rating system. Pa figs. 1 shows a block diagram of a group control machine (CIM); in fig. 2 - A simplified schematic of the decoder. The diagrams allow you to consider the method of grading and the implementation of a hint about the mistakes made. As can be seen from FIG. 1, the main parts of the CIM are the students' remotes / answers, the main console 2 (teacher’s panel), the display board 3, and the unit 4 of the rating printing. On the main console 2, there are located a block of input of reference responses, a comparison circuit 6, a circuit of 7 sections, a rating circuit 8, a workplace switching unit 9 and a variant switching unit 10. Schemes 6, 7 and 8 constitute a decoder. . The machine has 30 response consoles (SW), each console has ten switches for entering answers to eleven positions each. The machine is designed for four options tasks. A voltage divider consisting of ten resistors is mounted in each response console. Eleven pins of the divider are connected in parallel to the fixed contacts of ten response input switches. Each switch has eleven positions, and all switches constitute a ten-bit response input register. A discrete potential code of the entire word is removed from the moving contacts of the switches, containing several answers entered into the response console. Through decoupling diodes, the moving contacts of the switches are connected to ten lines of cable, called reference lines. Similarly, the pins of the switches of all other response consoles, in parallel and corresponding to the bit numbers, are connected to the same lines of comparison. All ten lines of comparison are brought to the main console 2 (the pas of Fig. 1 shows only one line). Each of the four registers of the block 5 of input of standard answers (two registers are shown in Fig. 1) contains a register 11 of entering correct answers, a block 12 of entering sections and an error weight switch 13. The block 9 of the workplace mutation is connected separately to each zero / response of students for their alternate threading. From these lines, branches are made on the board 3 to turn on the bulbs of the numbers of the respondent response control panels. The other output of the workplace switching unit 9 is connected to the option switching unit 10, through which, according to a predetermined program, feeds the register 11, the unit 12 and the switch 13 of one of the registers of the input of the reference responses. The outputs from the zero responses are connected to one input of the voltage comparison circuit 6 for supplying a ten-digit potential code of the response word set in the interrogated polling console. The other input of the comparison circuit is supplied from the register // of entering the correct answers a reference code. The voltage comparison circuit is connected to the partition diagram and from the board 3 for transmitting signals about erroneous bits of the response word. In the scoreboard, these signals are used to suggest errors. The section scheme converts errors by digits into errors by numbers (syllable answers). If there are several erroneous digits in any one syllable of the full word of an answer, then the partition scheme should produce only one error, since only one answer (syllable) containing several digits of a multi-digit number is incorrect. The decrease in the assessment should not depend on the number of digits in one syllable of the answer. Consequently, due to the application of the partition scheme, the answers of the full word can contain numbers with different numbers of numbers (bits). The outputs of all section input units are connected to the corresponding sections circuit layout and to the section signaling lights installed on board 3. The output of the section circuit is connected to the rating scheme 8 for transmitting to it an error, the number of which is equal to the number of invalid syllables (numbers) in the full word answer. The weight switches are connected to the rating scheme. In the machine, we take two error weights - 1 point for one error “and - I point for two errors. The grading scheme produces one of the scores of the tiball system, depending on the number of syllable errors in the answer word and the received error weight. The output of the rating scheme is connected to the non-delivery unit and to the workplace switching unit, which is connected to the display 3, for alternately distributing the ratings to the memory and signaling cells. Each of the thirty indication cells of the honeydew contains four MHT-90 thyratrons, each located next to a light bulb of the corresponding software work station number. In the printing block, the estimates are in the form of numbers 5; four; 3 or 2 are fixed on a paper tape designed for directly sticking it into a cool magazine. When the machine is operating in a two-point system, in which the estimate is correctly recorded only when there is no error in the entire answer word, the effect of the decoder does not change. However, from the rating scheme, only the "5" rating line is derived, which corresponds to the "Right in a two-point system." In addition, the thyratrons in this mode fix not one of the four estimates of the t-point system, but one of the four options for which the correct answer was given. Before considering the operation of the machine, we will stop at the device deigiratos. FIG. 2 shows the bulbs 14 and / 5 of the error signaling and sections, which are switched on by the tumblers from the control panel, as well as the toggle switches of the section input unit, belonging to one of the registers of the reference response input unit. As an element of comparison 16, a three-position polarized relay RP-5 is used. The comparison line from the class, i.e., from all the response consoles, is connected to one of the windings of each relay (for example, to the left), and the comparison lines from the registers of the unit 5 for input of the standard responses to the second windings. To all non-moving. the relay contacts are connected to the voltage from the rectifier. The bit lines of the error signals GO from the relay korea through the isolating diodes to the warning lights 14 on the display board 5 and to the relay contacts of the 17 sections of the corresponding; their bits. The windings of these relays are connected to the toggle switch of the input section, which closes to turn on the section. Normally open output contacts of each section relay are connected to the input resistors 18 of the error adder. The total error is removed from resistor 19. As can be seen from FIG. 2, the light bulbs of the sections are connected in parallel to the windings of the relay sections of the corresponding bits. If the first answer is expressed, for example, by a three-digit integer positive number, then the first (in Fig. 2, counting from above) two toggle switches of the partition input unit must be turned off, and the third after the switch of the register of the input response block should be turned on. When the power supply of this register is turned on, the third panel of the alarm indicator of the partitions lights up and the board triggers the partition circuit and error errors from the three three bits to the error accumulator for only one of its third inputs. Consequently, the use of sections discredits work on the principle of the logical scheme “OR. Three polarized on-off relays, RI-4 are intended for grading. One of them, relay 20, sets a rating of 2, the other relay 21, an open mode 5. A third relay 22, a rating of 4. Rezstor 19 connects one of the windings of each relay, called a signal one. The second winding receives a reference voltage from one nS of RELATED potentiometers 23. Each relay 20 and 21 can receive its own reference voltage (t / on ,,,) from one of the two potentiometers, depending on the state of the relay 24 error weight. When the total voltage is absent on the reznetor 19, all of the power windings are de-energized and, under the action of the reference measles, all the relays are turned to the right. In this case, the voltage supplied to the relay is fed into the output circuit line 25 of the onenka 5. The reference voltages are adjusted so that the condition is always met, -. ,,,: f.p- ,. In addition, each of the reference stresses of a large weight of errors is less than the corresponding voltage of a small weight. As a result, with a large weight of errors from one error, relay 22 is triggered and an estimate is given on the line 4 of the network: With two errors, relay 22 is 21 - rating 3; with three or more errors, all three relays are triggered and an op 2 is generated. With a small error weight, a rating of 4 is given for one or two errors; a rating of 3 is for trp four errors, and 2 is for five errors and more. Grade issuing lines are set up in the KONniX block of workplaces and, in addition, have an output for the grades printing block. Work on the machine and its action in a five-point rating system proceeds as follows. Depending on the number of prepared variants of tasks, the whole group is divided into four subgroups (A, B. C, and D) or into two subgroups (odd numbers A and B, even C and D) of NLP all give the same task. To determine the membership of a group, there is a letter on each answer console, except for the number. After the students' information about the content of the assignments and the sections, set the reference answers and sections, set the correct error weights and set the order of switching options.

The workplace switching unit switches to " Automatic, performs a one-time round of all response consoles, and then stops at the initial knowledge.

When installing the step finder brushes on the next line in the machine, the following operations are performed. Power is supplied to the next response console, and its response code is sent to the decoder, the corresponding register of the reference response input block is registered. In this case, a reference code is fed to the decoder, the corresponding section relays are triggered, and a specified error weight is set on the relay 24. The comparison relay reveals the error bits of the entire response word. The partition scheme converts errors by numbers into errors by numbers. The adder generates a total error signal according to the number of incorrect answers, and relays 20, 21 and 22 give an estimate.

The rating is passed unchanged from the decoder to one of the four brushes of the switching unit of workstations and is not damaged to the grid of the thyratron, which fixes it. At the same time, the evaluation is printed on the paper tape.

When the machine is operating in a two-point rating system, the unit for entering sections sets up only one section at the end of the answer, i.e. only one of the toggle switches is turned on. At the same time, from line 25 of the grading, only line 5, which corresponds to the “True. In addition, the relay circuit associated with the option switching unit 10 provides the switching of the “True to one of four ti-tronron” evaluation memory cell on the scoreboard 3 depending on which of the four assignments is answered.

Control unit 5 input reference responses is carried out according to the installed program from the switching unit jobs through the switching unit options or from

remotes / response in remote control. In the latter case, it is possible to transmit several ten-word words from each response console in one cycle. Error prediction, enabled by toggle switches 26 and 27, can also be applied in a two-point grading system.

Subject invention

A ground control machine containing workplace switching unit, the outputs of which are connected to the scoreboard, the input of the option switching unit, the outputs of which are connected to the inputs of the section input units, the correct answer input registers and through the error weight switches to the rating scheme connected to the printing unit and to the input of the switching unit of workplaces, the other outputs of which are connected to the zeros of the learners, whose outputs are connected in parallel

with one of the inputs of the comparison circuit, the other

the input of which is connected to the outputs of registers

entering the correct answers, and its output is connected

To the scoreboard, characterized in that, in order to simultaneously enter several numbers with different numbers of bits and alternately prompt the erroneous bits in their answers, indicating the position of each error within each syllable of the complete answer word, it contains a section diagram, one input of which connected to the output of the comparison circuit, another input to the outputs of the input sections and board units, and its output is connected to the rating scheme.