SU1381470A1 - Multichannel data input device - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in devices for entering information into a computer. The purpose of the invention is to expand the scope of application by providing the ability to control the duration of the output pulses. The device contains two triggers in each channel, a counter, an OR element, and a comparison block. A code that determines the duration of the device output pulses at the direct and inverse outputs of the second flip-flops is set at the control inputs of the device. When the input signals arrive at the C inputs of the first triggers, the second triggers are set to the state corresponding to the input code. This removes the blocking of the counter, which begins to fill with the input clock. When the counter code coincides with the code set on the control inputs, the second triggers are reset, the device returns to its original state. The duration of the output signals of the second triggers does not depend on the duration of the pulses at the C-inputs of the first triggers. 1 il. with iS with

Description

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The invention relates to automation and calculus. The technique and can be used in devices for entering information into the EVLA.

The purpose of the invention is to expand the field of application of the device by providing control over the duration of the output pulses.

The drawing shows a block diagram of the proposed device.

The device contains the first 1 and second 2 t | ılters, information inputs 3 of the device, inverse 4 and direct 5 outputs of the device, input 6 of the device synchronization, counter 7. element OR 8, block 9 of comparison and inputs 10 of setting the output duration. 1s device.

Set | 1; iit1) abo1aet as follows.

When the thread is turned on, at the inputs of the device 3 there are low voltage levels, corresponding to no input (n, 1 signals, the outputs of the trigger 1 - low vpoiiiiH voltage, and the trigger 2 go; 1 tg / in the initial state, i.e. low levels of pan / kepi are set at their direct outputs, and high levels at inverse ones. High y) () Vip voltage from inverse outputs T) (measures 2 keep the counter 7 i E. OR 8 in zero state -,: AI in jK t ii / raie of which the low level (;) the output of the output of the comparison block 9 goes to the flip-flops 2, since the count of Odor, O is not flows from the codo- m of the output- I oro state of the counter 7. The code from the inputs 10 allows you to: select the required duration of the output pulses. By setting the necessary to (JD. you can choose the length of the ibHoc ib output (.1 signal required for operation, first; 1 devices; device n; 1 is in its initial state. With trigger signals, 1 and d 1, before the first front of the input voltage, high voltage (; , 1 trigger triggers I post ayug HaJ-inputs t Perov 2 Io to the trailing edge of clock pulses г с s; from the positive polarity of information 1 and from the J-inputs of the trigger 2 re- and 1 iyakps ia their outputs. At the direct outputs of rpin i ep)) 2, high y) and viral 1) mappings are set, and on inverse ones - low, Ek y) voltages are reset by thr,, and the result is low levels) g: p1 and triggered leiio 2, and ak as the K-inputs trigger-) o; . : j ((ir and 1k voltage levels with. 1 comparison, then triggers 2) cfjiiHx of the settings for the input frequency from the input 6 synchronous-la) of the device. At the same time, pizhie (. Voltage through the element OR 8; ici) t to the / P input of counter 7 and (nafioTv. (The 7 starts

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counting On the leading edge of the nth pulse frequency, the code at the output of counter 7 coincides with the code at inputs 10, as a result of which a high voltage level 5 from the output of the comparison block 9 goes to the K-inputs of the trigger 2. By the falling edge of the clock frequency pulse low voltage levels are recorded in triggers 2. On the direct outputs of triggers 2, low voltages are set, and inverse outputs are high. High voltage levels from the inverted outputs 4 are reset through the element OR 8 counter 7, as a result of which a low voltage level at its output prepares

5 through the comparison block 9 for further work on the K-inputs triggers 2. At the same time, high voltage levels are fed to the I-inputs of the triggers 1 and also prepare them for further work.

Upon receipt of the following input signals, the device begins to generate output pulses of the required duration.

Thus, when the input signals arrive, the device generates single pulses of positive and negative polarities at the outputs, the duration of which is proportional to the input control code and does not depend on the duration of the input signals.

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Claims (1)

Invention Formula A multichannel device for inputting information containing the element OR, the counter and in each channel the first and second triggers, the output of the element OR is connected to 5 / (-input counter, the C input of which is combined with the C inputs of the second flip-flops and is the device sync input, the C inputs of the first flip-flops are information inputs of the device, the forward outputs of the first flip-flops are connected second triggers, the forward outputs of which are the information outputs of the first group of devices, the inverse outputs of the second triggers are connected to the L inputs of the corresponding first with flip-flops, the corresponding inputs of the OR element and are information outputs of the second group of the device, characterized in that, in order to expand the field of application of the device by providing the ability to control the duration of the output pulses, the device contains a comparator, the output of which is connected to the K-input and second triggers, the outputs of the counter are connected to the inputs of the first group of the comparison unit, the inputs of the second group of which are inputs for setting the duration of the output pulses of the device.