SU590804A1 - Examination appliance - Google Patents

Description

A set of questions, the first output of which is connected to the input of the answer-input unit, and the counter of correct answers, connected to the display unit 3J.

This device has several answers for each question, one of which is correct. It is characteristic that the correct answers are assigned to the same contacts of the answer block, regardless of the fact that the series of questions vary. Therefore, one of the residues of the known device is that the student has the ability to determine the pattern of keystrokes to enter the correct answers to the questions without knowing the material.

Since, in the known device, the question asking unit is designed as a ring counter, after entering all the answers, the question asking unit is reset, and the device is ready to receive answers again. The absence of locks permits multiple repetitions of the input of one correct answer to bring the device’s correct answers counter to a state corresponding to a "five" rating.

The presence in this device of two question counters and a ring counter of a block of questions asking questions, which always work when a correct or incorrect answer is entered into the device, as well as a recorder that consists of a large number of cold cathode lamps and electromagnetic relays, . All of the above indicates the low efficiency of the process of coptrol knowledge and training of students, the complexity of the design and the low availability of the device.

The purpose of the present invention is to simplify and increase the reliability of the device.

This goal is achieved by the fact that in the device the first output of the response input unit is connected to the input of the question asking unit, the second output of the response input unit is connected to the first input of the correct answer counter, to the second input of which, and to the input of the display unit, the second output of the question asking unit, which contains a question number indicator, an answer coder, a question counter and a decoder, whose input is connected with the question counter output, the first exit is with the inputs of the question number indicator and the answer coder, in Ora output - to the input of the counter and the output unit issues.

The drawing shows a block diagram of the device. It contains a block of asking questions 1, the first output of which is connected to the input of the block of input of answers 2, the counter of correct answers 3 connected to the display unit 4, the first output of the block of input of answers 2 is connected to the input of the block of questions 1, the second output of the block of input of answers 2 is connected the first input of the counter of correct answers 3, the second output of the block is connected to the second input of which and to the input of the display unit

asking questions 1, which consists of a question number indicator 5, answer encoder b, question counter 7 and decoder 8, whose input is connected to the question counter output, the first output - with the inputs of the question number indicator 5 and the answer encoder 6, the second output with inputs question counter 5 and the output of the question box 1.

The device for knowledge control works as follows.

Before entering the answers, the status of the counter of the correct answers 3 and the counter of questions 7 correspond to zero. At the first output of the decoder 8, a signal is generated defining the question number of the control ticket. The question number 5 indicator highlights this number. The same signal also enters through the response encoder 6 to the response input unit 2. At the second output of the decoder 8, a signal is generated allowing the passage of signals from the response input unit 2 to the first inputs of the counters of correct answers 3 and questions 7, but prohibiting the operation of the display unit 4.

When the correct answer is entered, both outputs of the answer input block 2 produce single rectangular voltage pulses. The counter of equal responses 3 registers with the answer, changing its state by one. Question counter 7 also changes its state and unit and thereby sets the next ticket ticket. At the same time, the indicator of the number of questions 5 highlights the next question number. The answer encoder 6 encodes the initial state of the question counter 7, taken from the first output of the decipher 8, and thereby commits the corresponding button of the correct answer.

When a correct response is entered, the signal in the form of a single rectangular voltage pulse appears only at the first output of the response input unit 2. At the same time, question counter 7 changes its state by one and thereby asks the next question of the ticket. At the second output of the input block of answers 2, a single rectangular voltage pulse is missing and the counter of correct answers 3 changes its state.

After entering the answers to all questions of the ticket, the second output of the decoder 8 generates a signal that, upon further input of answers, changes in the states of the counter of correct answers 3 and question counter 7, but allowing the operation of the display unit 4. The display unit 4 gives an estimate corresponding to the state the counter of correct answers is 3, and the indicator of questions number 5 indicates that all the answers have already been entered.

The answer encoder 6 used in the question asking block 1 allows arbitrarily assigning the numbers of the correct answer buttons at the stage of preparing the questionnaire. In this case, the sequence of pressing the buttons to enter the correct answers for different tickets will be different.

The proposed technical solution allows, due to the simplicity of the device, to increase its reliability and reduce the cost.

Form} la invention

Claims (3)

1. A device for controlling knowledge, containing a question asking unit, the first output of which is connected to the input of the response input unit, and a correct answer counter, connected to the display unit, characterized in that, in order to simplify and increase the reliability of the device, therein the first output of the unit input answers connected to the input of the question asking unit, the second output of the answer input unit is connected to the first input of the counter of correct answers, to the second input of which and to the input of the display unit the second output of the question setting unit is connected s. 2. The device according to claim 1, characterized in that in yen the question asking block contains a question number indicator, an answer coder, a question counter and a decoder, the input of which is connected to the output of the question counter, the first exit with the inputs of the question number indicator and the answer coder, the second exit - with the input of the question counter and the output of the block. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 452030, cl. G 09B 7/02, 1973. 2. Authors certificate of the USSR 365727, cl. G 09B 7/00, 1973. 3. USSR author's certificate №423161, cl. G 09B 7/02, 1974.