SU249089A1 - DEVICE FOR COUPLING ELECTRONIC COMPUTING MACHINE WITH A TELEGRAPHY COMMUNICATION LINE - Google Patents

Description

This invention relates to the field of digital computing.

Interface devices of a computer with a telegraph line are known, comprising a buffer register, a code converter, a punch register, a telegraph register and a control device.

The proposed device is characterized in that it contains a register of service combinations, differentiating chains and a trigger for reading priority of service or information combinations, with the outputs of the register of service combinations connected to the inputs of differentiating chains, the outputs of which are connected to the input of the trigger for reading priority of service or information combinations, and the outputs of the latter connected to potential inputs of reading gates of service and information combinations.

This eliminates redundancy in transmitting alphanumeric information to a telegraph link.

The drawing shows a block diagram of the described device.

connected to the inputs of the pulse-potential decoder 2 code converter 3. The outputs of the decoder 2 corresponding to the letters of the alphabet EDI1 converted into a telegraph code are connected to the inputs of the tuner 4, five pulse outputs of which correspond to the information part of the telegraph code are connected to the inputs of the digit code register. 5, and five

other pulse outputs corresponding to the service part of the telegraph code are connected to the inputs of the register 6 service combinations. The potential outputs of the bits of the cumulative register 5 are connected to the corresponding information reading valves 7, the second potential inputs of these valves are connected to the single output of the trigger 8; the outputs of the valves 7 are connected to five bits of register 9 perforator, and through

diode assembly 10 - to a one-bit register // telegraph unit.

The outputs of the bits of the register 6 are connected to the corresponding potential inputs of the gates 12 to read the service combinations, as well as to the inputs of the differentiating chains / 5, the outputs of which through the diode assembly 14 are connected to the zero input of the trigger 8. The second potential inputs of the gates 12 are connected to the zero output of the trigger output. I will give register 9 of the perforator and through diode assemblies 14 - to the register // of the telegraph apparatus.

The pulse inputs of the valves 7 and 12 are connected to the outputs of the control device 15. Other outputs of the control device are connected: to the pulse input of the decoder 2 (polling the decoder), to the single inputs of the trigger S and the trigger for puncturing the register of the hammer drill 9, to the reset bus at zero 9 of the register, to the single and bullet inputs of the register 11 of the telegraph apparatus, to the clock one bus buffer register 1.

The outputs of the perforator register 9 are connected to punch electromagnets and an electromagnet through a punched tape; the output of the register // telegraph apparatus is connected to the electromagnet of the telegraph apparatus.

One of the outputs of the control device 15 is connected to a computer control device.

The interface device implements two modes of output to the telegraph line: through a telegraph device using a generator in a device tuned to the frequency of cabling, and through a special perforator using the received pre-tape for transmission to the communication line, for example, using a transmitter.

The interface device is reset to the initial state by signals from the control device 15. At start-up, the control unit generates the initial settings for the registers f, 5, 9, 11, trigger 8, as well as a request signal in the computer.

At the request signal, the machine word in the parallel binary code is transferred from the computer to the register /. The issuance of a computer word from a computer to the interface device is accompanied by a confirmation by a signal, under the action of which signals corresponding to the established mode of operation are formed in control device 15.

The contents of register 1 are transferred to decoder 2 by letter by polling the latter with a pulse from control device 15 and shifting the contents of the register towards the higher bits. The shift is performed by a series of K pulses generated by the control device 15.

The number of series of pulses corresponds to the number of letters in the machine word.

Each output of the decoder 2 corresponds to the letter of the alphabet of the three-register international telegraph code No. 2. Signals from the output of the decoder arrive at the inputs of the encoder 4, which forms of them information and information combinations.

Information combinations are stored in cumulative register 5, and service records are stored in register 6 service combinations. Each of these registers consists of five static triggers that are not interconnected. The reading of information from register 5 is carried out with the help of gates 7. The service combinations from register 6 are read with the help of gates 12. The sequence of reading service and information combinations is determined by the trigger 8.

When the service combination enters the register 6, the latter changes its state, what causes the reaction of the differentiating chains 13. The differentiating chains form the pulses that through the assembly

arrive at the zero input of the trigger 8 and set it to the zero state. The potential of the zero arm of the trigger 8 is applied to the inputs of the valves 12, permitting the reading of the service combinations from the register 6 of the service

combinations.

Pulse interrogation of the valves 12 is carried out by signals from the control device 15 either in parallel (when outputting to the perforator) or sequentially discharge after discharge (when outputting to the telegraph unit).

Signals (service combinations) from the valves 12 are received, respectively, either to the register 9 of the perforator, which controls the electromagnets of punching the perforator, or through the assemblies 10 and 14, to the register 11 of the telegraph apparatus, which controls the electromagnet of the telegraph.

After withdrawal. the final combination of the trigger 5 signal from the control device 15

is set to one and allows the reading of information from register 5. The information is read by means of gates 7, the polling of which is similar to the polling of gates 12.

The signals from the valves 7 also come either to the register 9 of the perforator or to the register 11 of the telegraph apparatus.

If a letter corresponding to the same register as the previous one enters from the register / code converter 3, then the register 6 of service combinations does not change, the differentiating chains of 13 pulses are not formed, the trigger 8 remains in the same (single) state therefore, the readout of the service combination will not occur, since the gates 12 are prohibited by one of the inputs to which the zero (inhibitory) potential from the trigger 8 is applied. Thus, if the letters are

belong to the same register, then the service combination is output to punched tape or telegraph tape, the device only before the first letter, due to which redundancy of the telegraph code outputted

to the communication line.

When outputting to the perforator, the polling pulses of the valves 12 to 7 are formed in the control device 15 by the action of signals "readiness of mechanics coming from sensors

perforator.

The formation of starting and stop parcels for the telegraph apparatus is carried out by the register 11 of the telegraph apparatus under the influence of signals from the control device.

After the last letter of the machine word has been output in the controller 15, a request signal is generated in the computer and the cycle of operation is repeated again.

Subject invention

An interface of an electronic computer with a telegraph-line, a buffer register, a code converter, a punch register, a telegraph register, and a control device, characterized in that, in order to eliminate redundancy in transmitting alphanumeric information to the telegraph line, it contains register of service combinations, differentiating chains and trigger queue reading service or information combinations, with the outputs of the register of service combinations connected with inputs differentiating chains

the outputs of which are connected to the trigger input of the order of reading service or information combinations, and the outputs of the latter are connected to the potential inputs of the reading valves of service and information combinations.