SU541191A1 - Device for controlling the knowledge of students - Google Patents

Description

one

The invention relates to the field of automation and computer technology, in particular, to devices for teaching and controlling the knowledge of students.

One of the known student knowledge control devices comprises a question issuing unit, an answer input unit, memory and question and answer indication units, an evaluation unit. The pointing device has a complex structure. 1.

Another known device for the control of students' knowledge contains input fleas and response memories, a block of questions, a block of changing modes of operation. This device is also quite complex 2.

It is also known a device for controlling the knowledge of students, and the closest to the invention, containing questions thyratrons, the grids of which are connected through the first resistors to the first inputs of the device, response thyratrons, the grids of which are connected through the second resistors with the second inputs of the device, the anodes of the questions thyratrons connected to the cathodes of the response thyratrons and through the third resistors are connected to a power source connected to the cathodes of the questions thyratrons to the switch and through the fourth resistor to the anodes iratronov answers. This device is equipped with a capacitor reset circuit to the original co2

A stand that instantly, without delay, quenches the thyratrons of questions and answers when the latter are triggered. Because of the resettlement of students, they have time to seriously think about and evaluate the result of the answer. In addition, the device is quite difficult 3.

The purpose of the invention is to simplify the device and, therefore, ensure the possibility of a long burning of question and answer lamps.

with automatic contactless blanking after a specified time.

This is achieved by introducing two resetting thyratrons, resistors and capacitors into the device. The cathode of the first reset thyratron to the anode and the grid of the second reset thyratron, the cathode of which is connected to the switch, the grid of the first reset thyratron is connected in parallel through the first capacitor and the fifth resistor to the power source. Anode

The first reset thyratron is connected through the second capacitor to the anodes of the response thyratrons and through the capacitor resistor to the power supply. The proposed device is schematically depicted in the drawing e.

It contains questions tiratrons 1 and answers 2, the first 3, the second 4, the third 5, the fourth 6, the fifth 7 and the sixth 8 resistors, the first 9 and the second 10 reset thyratrons, the first 11 and

second 12 capacitors, switch 13,

the outputs of the power source 14, 15, 16, exhausted, iairimer, in the form of a diode rectifier 17 of a network of alternating current 18 with protective resistors 19 and a filter conditioner 20.

In this case, the grids of tiratroiov 1 questions through the resistors 3 and the switches to the first inputs of the device, the grids of the tiratrons of 2 answers through the resistors 4 to the second inputs of the device. The anodes of vonroso's tiratrons are connected to the cathodes of the response tiratroi and through resistors 5 are connected to an iitani source connected to the cathodes of the questions thyratrons, to the non-switch 13 and through the resistor 6 to the anodes of the answers thyratrons. The cathode of the thiratron 9 reset is connected to the aiode, and the grid of the reset thyratron 10, the cathode of which is connected to the switch 13. The grid of the thyratron 9 is connected in parallel through a capacitor 11 and a resistor 7 to the power source, the anode of this thyratron is connected through 2 responses and power supply resistor 8.

The device for controlling the knowledge of students works as follows.

By touching the input of the question of interest, the corresponding thyratron 1 is triggered. The voltage at its anode drops, and this increases the potential difference across the corresponding 2 response tiratron. Therefore, when touching the inputs of responses, only the indicated, corresponding to the correct answer, thyratron 2, can be triggered, since on the remaining response thyratrons the potential difference is insufficient to operate.

When the correct answer is touched and the response thyratron triggers, the voltage across the resistor 6 drops. This voltage jump is transmitted through the capacitor 12 to the aiod of the reset thyratron 9, which in the initial state burns along with the reset thyratron 10. The voltage jump dampens both discharge tiratrons. After that, the capacitors 11 and 12 begin to be charged up to the voltage of the power source through resistors 7 and 8. During the whole time the tirathrons of the questions and answers are hot. eleven.

When the voltage on the capacitor 11 reaches the grid ignition voltage of the reset thyratron 9, it triggers and simultaneously ignites the thyratron 10. On the grid and the anode of the thyratron 9, large negative signals appear. They are transmitted through the condensers 11 and 12 of the thread of question and answer thyratrons, as a result of which these thyratrons go out and the device returns to its original state.

For long-term memorization of responses for an arbitrary time, switch 13 is opened. When it is turned on, the thyratrons 9 and 10 are activated. Switch

quench questions tiratrony in case of a wrong choice of a question or at the absence of an answer.

Repeated use of a number of elements has simplified the device. One switch 13 performs the functions of two switches: turn off automatic reset and start a manual reset. When the switch is on, the questions and answers thyratrons are extinguished by reset thyratrons. When the switch is off, automatic reset is off. A manual reset is triggered when the 9 and 10 are ignited when the switch is turned on.

Capacitor 11 is simultaneously used both as a time setting and as a link capacitor to enrich question thyratrons with a negative signal arising on the grid of a reset thyratron 9 when it is ignited.

The inclusion of this thyratron provides the power of question and answer thyratrons through two power wires. On these two wires, the time delay was started and the two groups of tiratroi I and 2 were reset.

During operation, it is essential that the burning time of the working question and answer thyratrons is increased to any desired value. This allows for better thinking and learning results.

Claims (3)

1.Avt. St. No. 188762, cl. G 09B 7/00, 1966 2. Avt. St. No. 269643, cl. G 09B 19/00, 1970 3. Erkii AM, Ion devices in a physical experiment. M., Enlightenment, 1973, p. 80-86.