SU911497A2 - Information input device - Google Patents

Description

(5) DEVICE FOR INPUT OF INFORMATION

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The invention relates to automated KB and computing, in particular, to devices for entering information.

According to the main author. St. If 666536 a device for entering information is known, which contains a keyboard, a generator, pulses, two blocks of AND elements, two OR elements, a counter, a trigger, an AND element, two decoders are connected to a keyboard, and inputs are with the corresponding inputs of the second block of AND elements and lower bits of the counter, the outputs of the oldest bits of the counter are connected to the corresponding inputs of the block of elements AND and the inputs of the second decoder, the outputs of which are connected to the corresponding inputs of the first block of elements AND, the second inputs of which are connected to keyboard, and the outputs of the first block of elements And connected to the second inputs of the second block of elements And, the outputs of which are connected to the second output of the device and connected to the inputs of the first element OR, the output of which is connected to the first input, the second input of the trigger is connected to the output of the second element OR, inputs which is connected to the keyboard, and the trigger output is connected to the second input of the element I, the first input of which is connected to the pulse generator, the output of the element AND is connected to the input of the counter and the first output of the device tH.

The disadvantage of the device is the limited scope.

The purpose of the invention is to expand the field of application of the device, which allows simultaneously with the representation of a number, a symbol in the form of a parallel code, a number-pulse code, to represent any alphanumeric information in a serial, international telegraph code MTK-2.

The goal is achieved by inserting the shift register, the third and fourth elements into the device.

Claims (2)

OR, the driver of clock pulses, the clock driver output is connected to the synchronization input of the shift register, the control ID of which is connected to the output of the first block of I elements, and the information inputs are connected to the outputs of tert of its element OR, the second input of which is connected to the output of the third element hectare OR and the input of the sync pulse generator. Hrf drawing is represented by a function; The scheme of the proposed device for entering information. The device contains a keyboard 1 with buttons 2, the first 3 and second C decoder, the generator 5 pulses, the element And 6, the counter 7, the first 8 and the second 9 elements OR, the first 10 and the second It blocks the elements And, the trigger t2, the shift register 13, the third C and the fourth 15 elements OR, shaper 16 clock pulses. The device works as follows. In the initial state, the estimator 7, the shift register 13 are set to the O position. At the output of the OR element, AND we have a low potential that enters the control input of the shaper 1b of the clock pulses and blocks it, and at the inverse input of the element OR 15 forms the output high potential. Using buttons 2, the selected rows of rows and columns of keyboard 1 are connected. When one of the three buttons is pressed through the OR 9 element, the trigger 12 is set to allow the impulses of the generator 5 to pass through the AND 6 element to the counter 7. On the counter 7 and the output of the device passes the number of pulses corresponding to the number of the pressed button. This triggers one of the elements of the block elements And 10, and through the block elements And 11 on the device, as well as the inputs of the element OR 8 and shift register 13 receives a parallel code corresponding to the number of the pressed button. This code is recorded in the shift register 13 and through the OR element 8 sets the trigger 12 to the state prohibiting the passage of generator 5 pulses to the counter 7 Simultaneously with the arrival of the code to the information inputs of the shift register 13, its control input from the output of the first block of elements And 10 enters gating pulse. A gating pulse arriving at the control input records the full part of the stop packet, i.e., 1, and the lower order bit, via the inverse Start input, i.e. О In the case of writing to the shift register 13 at least one unit (for example, Stop) at the output of the element OR 1, the potential is high, which enters the input of the clock pulse 16 and starts it. The clock pulses from the sync pulse generator 16 to the synchronization input of the shift register 13, with its falling edge, shift the character code sequentially written to the register 13, which through the OR 15 element will arrive at the device output. On discharged bits, O is written by connecting a serial input to a potential O (ground). At the moment when O (the shift register is set to p) is written to all bits of the shift register (13), the output potential of the OR 3 element is low again, which blocks the driver of 16 clock pulses, and the high (stop) potential is blocked at the output. So, at the output of the element 15, a start-stop code combination of the transmitted signal in the MTK2 code is formed. Thus, the use of the proposed device expands the field of application of the device for inputting information, as it allows simultaneously with the representation of a number, a symbol in the form of a parallel number-impulse code, to represent any alphanumeric information in the MTK-code 2. The invention The device for entering information on the author. St. No. 666536, characterized in that, in order to expand its field of application by presenting information in the international telegraph code, the shift register, the third and fourth elements OR, the sync driver, are entered into it pulses, the output of the sync pulse generator is connected to the synchronization input of the shift register, the control input of which is connected to the output of the first block of AND elements, and the information inputs are connected to the corresponding outputs of the second block of AND elements, the outputs of the shift register are connected to the inputs of the third OR element, one of the inputs whom connected to the first input of the fourth OR element, the second input of which is connected to the output of the third OR element and the internal clock of the sync pulse generator. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 666536, cl. G 06 F 3/02, 1977 10 (prototype).