SU702393A1

SU702393A1 - Display device

Info

Publication number: SU702393A1
Application number: SU782613533A
Authority: SU
Inventors: Равиль Хамитович Булгаков; Наиль Равилевич Сакаев
Original assignee: Предприятие П/Я М-5038
Priority date: 1978-05-10
Filing date: 1978-05-10
Publication date: 1979-12-05

Description

. (54) УСТРОЙСТВО ДЛЯ ИНДИКАЦИИ ..v«. (54) DEVICE FOR INDICATION ..v "

, ,

Изобретение относитс к автоматике а вычиспитепьнрй технике н может бь.1ть использовано дл вода информации на цифровые индикаторы.The invention relates to automation and computing technology can be used to enter information on digital displays.

Известно устройство дп цифровой индикации, содержащее двоичные декады, индикаторные пампы, одноименнью цифровые электроды, которых объединены и подключены к выходам дешифратора, блок с троса с генератором тактовых импупьсов и логические элементы 1.A device dp digital display, containing binary decades, indicator pamps, with the same name digital electrodes, which are combined and connected to the outputs of the decoder, a cable block with a clock impulse generator and logic elements 1, is known.

Надежность такого устройства определ етс в основном надежностью коммутирующих элементов, вход щих в состав блока опроса, так как они вл ютс электрически наиболее нагруженными. Отказ коммутирующих элементов может привести к повреждению индшсаторых элементов избыточным посто нным током превыщающик действующее значение импульсного тока, имеющего место при нормальной работе устройства.The reliability of such a device is determined mainly by the reliability of the switching elements included in the polling unit, since they are the most electrically loaded. Failure of the switching elements may cause damage to the individual elements by excessive direct current exceeding the effective value of the pulse current occurring during normal operation of the device.

Цепью изобретени вл етс повьшение надежности устройства путем защитыThe chain of the invention is to increase the reliability of the device by protecting

индикаторных элементов от повреждени в случае отказа коммутирующих элементов .indicator elements from damage in case of failure of the switching elements.

Claims

To achieve this goal, the device contains counting decades, the outputs of which are connected to one input of the AND elements, the other inputs of which are connected to the outputs of the interrogator, and the outputs from the input of the OR elements connected to the decoder, the outputs of which are connected to the same electrodes of the indicator elements control electrodes of which are connected to the outputs of the Poll block, the input of which is connected to the clock pulse generator, a trigger, an additional AND element and an OR element and an inverter are introduced. The inverter input is connected to the output of the clock pulse generator, and the output is connected to one input of the AND element, the other input of which is connected to the output of the OR element, whose inputs are connected to the outputs of the polling unit. The output element And is connected to the zero input of the trigger, a single output of which is connected to the input of the decoder. The drawing shows the block diagram of the device for display. The device contains a polling unit 1, a clock pulse generator 2, in-. indicator elements 3, the same electrodes of which are combined and connected to the outputs of the decoder 4, connected to the inputs through the elements AND LI with the outputs of the elements And 6, the first inputs of which are connected to the outputs of the counting decades 7, the element 10 and the inverter 11 The pia6oTaeT device is as follows. At the outputs of the biogas polling I, synchronously with the clock pulses of the generator 2, the polling pulses are formed, and at any time the polling pulse is present; Pko on one of the outputs of the polling unit. In this case, the information is transmitted alternately from each counting decade 7 through the elements AND 6 and OR 5 and the distance | 4 on the electrodes of the indicator elements 3. The information is displayed only by the element on the control electrode of which the corresponding polling is present. In the intervals between clock pulses, when the interrogation pulses are not present in any of the control electrodes of the indicator elements, logical OR is present at the output of the OR 8 element. When the switching element in the interrogation circuit is broken, the OR signal of the element arrives at the interrogation element the inverted clock pulse to the input of the trigger through the element 10. The trigger is pre-triggered; and from its output to the input of the prohibition of the display of the decoder 4, a signal is received, which makes it impossible to turn off the indicator elements; The invention is a display device containing counting decades, the outputs of which are connected to one input of the AND elements, the other inputs of which are connected to the outputs of the interrogator, and the outputs to the inputs of the OR elements connected to the decoder, the outputs of which are connected to the same electrodes of the indicator elements are These electrodes are connected to the outputs of the interrogation unit, the input of which is connected to a clock pulse generator, which is connected to the clock. That, in order to assess the reliability of the device, a trigger, an additional AND element and an OR element and an inverter, whose input is connected to the generator output, are introduced into it. clock pulses, and the output - with one. the input element And, the other input of which is connected to the output of the element OR, the inputs of which are connected to the outputs of the polling unit, the output of the element And is connected to the zero input of the trigger, the single output of which is connected to the input of the decoder. Sources of information taken into account in the examination I. USSR Author's Certificate; Nfe 390522, cl. G 06 F 3/14, 1970.