SU1682995A1 - Device for information input - Google Patents

Abstract

The invention relates to automation and computer technology, in particular, information input devices, and can be used in microprocessor and display technology. The aim of the invention is to expand the field of application of the device by identifying the source of information by fixing the presented symbols by inserting information into the device for inputting information, containing a comparison unit 4, a unit for setting standards and a number generator 3, an AND 13 element block, an information input and output are, respectively, the input 14 and the information output 15 of the device, the first trigger 10 and the first element 11 of the latching switch 1, the second element 2, the indicator 8, the second trigger 7, the element 12, tr tego AND gate 6 and the AND-NO element 5 with schematics compounds described in the claims. 1 il. lit. I

Description

The invention relates to automation and computing, in particular to devices for entering information, and can be used in microprocessor and display technology.

The purpose of the invention is to expand the field of application of the device by identifying the source of information by fixing the presented symbols.

The drawing shows a block diagram of the proposed device.

The device contains sequentially switched on code fixing switch 1, element 2, generator of 3 numbers, block 4 of comparison, element I-HE 5, element 6, trigger 7, as well as indicator 8, block 9 specifying standards, trigger 10, element 11 , element NOT 12. block of elements And 13, input 14 and outputs 15-17 of the device.

The device works as follows.

Pressing the button of the switch 1 starts the generator 3 with an increased frequency of enumeration of the characters displayed by the HS indicator 8. With an 8-bit, for example, the generator 3, the four most significant bits are switched by the signal of the element 11 to the indicator 8 with a state change frequency sufficient for perceived by the operator. As soon as the indication of indicator 8 reaches the zone located in front of the desired cycle, it is necessary to release the button of the switch 1. The trigger 10 is switched to one state, prohibiting the signal from element 11 and allowing element 2 to transfer the generator 3 to a lower frequency sufficient for human perception. by the operator of the low bits of the counter in the generator 3, defining the symbols displayed by the indicator 8. After waiting for the start of the cycle of recalculation of the lower bits of the counter in the generator 3 and, further, the corresponding combination in this cycle e, the operator should press the button briefly switch 1. In case of equality code in block 4 sinhrovyhode 16 is a signal ET, indicating the positive identification of the entered information. Otherwise, by element 6, the trigger 7 records an error signal prohibiting the output of a signal to output 16 by any other pressing of the button switch 1 when trying to re-identify any other symbol displayed on the indicator 8.

By first pressing the switch 1 button, the trigger 10 does not record the units until the button is released, and the trigger 7 unit also cannot be recorded, because a reset signal is applied to its R input. This eliminates the false triggering of the trigger 7 when searching for the location of the desired character identifying the entered information.

Accelerated search for the desired character for

the expense of the accelerated operation of the generator 3 provides ease of use of the device. At the same time, to avoid accidental finding the correct character, the transition to the next character fixation process is extended by resetting trigger 7 with an error fixed in it and is possible only when the counter in generator 3 overflows, which ensures

reliability of the device.

In this way, information can be entered from a subscriber (source of information) to a consumer (for example, a computer) only by identifying his character

Encrypted password in block 9.

Claims (1)

Equation Formula An information input device comprising a comparison unit, first and second The inputs of which are connected to the outputs of the unit for setting standards and the number generator, the block of elements AND, the information input and the output of which are respectively the input and information output of the device, the first trigger and the first element AND, the first input of which is connected to the zero output of the first, different trigger In order to expand the scope of devices by identifying the source of information by fixing the characters, the code-fixing switch is entered into it, the first output of which is connected to the S input of the first trigger, the second And element, one input of which is connected to the single output of the first trigger, another input to the second output of the code latch switch, and the output to the start input of the number generator, the overflow output of which is connected to the R input of the first trigger, and input of the frequency change to the output The first element And, the indicator, the inputs of which are connected to the corresponding outputs of the number generator, the second trigger, The R-input of which is connected to the zero output of the first trigger, and the zero output is the device enabling output, the NAND element, the output of which is the synchronous input of the device, the first input connected to the unit output of the first trigger, the second input with zero output of the second trigger, and the third input is with the output of the comparison block, the element is NOT, the input of which is connected to the output of the element NAND, and the output is connected to the control input of the unit 516829956 cops And, and the third element And, the first input of the trigger, and the third input - from the first output of which is connected to the output of the element I-house of the latching switch code, the power supply, the second input - with a single output to the second input of the first element And the first trigger, the output is from the S-input to the second and fourth input of the NAND element.