SU762000A1 - Information transmitting device - Google Patents

Description

The invention relates to automation and computing and is intended to transmit information while monitoring the content of the transmitted information.

A device for transmitting information [1] is known, which contains an input block, a memory block, a read block and an indication block. A disadvantage of the known device is the probability of occurrence of the Osh ^; side when typing.

The closest to the invention is a device for transmitting information [2], containing an input unit, the output of which is connected to the first input of the memory unit, the second input of which is connected to the first output of the reading unit, and the output to the input of the first display unit and the first input output unit, the output of which is the output of the device.

A disadvantage of the known device is the high degree of probability of occurrence of errors with group and separate input.

This is due to the fact that visual control of the accuracy of entering information by groups from a token, punch card or other media presents a certain difficulty, since the message on the media is presented as coded information.

matsii difficult to read by the operator. In addition, when entering information from the keyboard, the operator uses the primary carrier, for example, a paper form, from which he reads information. At the time of reading and writing, errors often occur, since during the exposure of a digital text that has identical signs, some of them subconsciously are not noticed by the operator, the so-called Renshburg phenomenon (see Lomov B.F., Man and Technology, M., “Soviet radio ”, 1966), as a result of which deliberately false information is transmitted to the communication line.

The aim of the invention is to increase the reliability of the information.

This goal is achieved by the fact that the device contains an adder, the input of which is connected to the output of the memory block, a blocking trigger, a single input of which is connected to the first output of the adder, a zero input - to the output of the input block, and a single output - to the second input 25 of the issuer, the register, whose input is connected to the second output of the readout unit, the comparison unit, the first input of which is connected to the third input of the memory block and the second output of the adder, and the second 30 input - to the register output and the second block

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display, the input of which is connected to the output of the comparison unit.

The block diagram of the device is shown in the drawing, which shows the input block 1, the read block 2, the memory block 3, the register 4, the first display block 5, the adder 6, the comparison block 7, the output block 8, the second display block 9, the locking trigger 10 .

The device works as follows.

All information entered into the device can be divided into a variable part, which changes with each new message and a constant part, which is constant for most messages.

The writing of the constant part of the message in the memory block 3 is carried out from the read block 2. The carrier of such information may be, for example, a punched card, on which, along with the signs of the permanent information, the value of the checksum of the same characters is punched in certain columns. The checksum code from the punch card enters the register 4, from which it is output at a certain point in time to the input of the comparison block 7. The second input of the comparison block 7 receives the result of summing the constant information from the block of the adder 6. In case of equal checksums, the second display unit 9 does not light up, which indicates the correct input of the characters of permanent information from the readout unit 2 into the memory unit 3. In the event of a check sum mismatch, the second display unit 9 signals a failure when reading information from the punch card. In addition, regardless of the outcome of the comparison process, the value of the checksum of the constant information from the adder 6 enters the memory block 3 for output to the first display unit 5. At the same time, the operator can control by the value of the control! the sum of the constant part of the message on the indicator board is not only the accuracy of the information entered from the punch card, but also the device’s operability when entering test punch cards with a previously known checksum. The variable part of the message that is entered into the memory block 3 from the input block 1 is summed up in the adder 6, and the result of the summing goes to the corresponding notebooks of the memory block 3, from where it is output to the first display unit 5 along with information for display on the indicator board.

When this happens, the lock trigger 10 is set to the state allowing

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transmission of information to the communication line. By pressing any information key in the input block 1, the lock 10 trigger is set to prohibit the transfer of information to the communication line until the formation of a new checksum for the variable part of the message. Usually, the variable part of the message is significantly smaller in volume than the constant part of the message, and the operator can easily calculate its non-digits or use the checksum already calculated and written on the primary media (paper form) and compare it with the checksum displayed in the first display unit 5 .

Thus, the introduction of register 4, comparing unit 7, second display unit 9, blocking trigger 10 and adder 6 allows controlling both the fixed part of the message, the largest and the variable part of messages while simultaneously blocking the transmission of information to the communication line. As a result, the device eliminates the appearance of errors in the case of both group and separate information input from input block 1 and read block 2.

Claims (1)

Claim A device for transmitting information containing an input unit, the output of which is connected to the first input of the memory unit, the second input of which is connected to the first output of the reading unit, and the output to the input of the first display unit and the first input of the output unit whose output is connected to the output of the device, different in order to increase the reliability of information transfer, it contains an adder, the input of which is connected to the output of the memory block, a blocking trigger, a single input of which is connected to the first output of the adder, a zero input - with the output of the input unit, and the single output - with the second input of the output unit, the register, the input of which is connected to the second output of the reading unit, the comparison unit, the first input of which is connected to the third input of the memory unit and the second output of the adder, and the second input - with the output of the register, and the second display unit, the input of which is connected to the output of the comparison unit.