SU864578A1

SU864578A1 - T flip-flop

Info

Publication number: SU864578A1
Application number: SU792852333A
Authority: SU
Inventors: Виктор Дмитриевич Кутернега; Сергей Николаевич Косенко
Original assignee: Предприятие П/Я Г-4421
Priority date: 1979-12-13
Filing date: 1979-12-13
Publication date: 1981-09-15

Description

Изобретение относится к импульсной технике и может быть использовано в цифровых системах автоматического контроля й управления, а также в измери- 5 тельно-вычислительных комплексах, например преобразователя аналог-код.The invention relates to pulse technology and can be used in digital automatic control and control systems, as well as in measuring and computing complexes, for example, an analog-to-code converter.

Известно пересчетное устройство содержащее счетчик, блок элементов совпадения и регистр, входы которого соединены с выходами блока элементов совпадения, входы которого соединены с выходами счетчика, вход которого .соединен с выходом устройства [1].A recounting device is known comprising a counter, a block of matching elements and a register whose inputs are connected to the outputs of a block of matching elements whose inputs are connected to the outputs of a counter whose input is connected to the output of the device [1].

Недостатком этого устройства является относительно низкая достоверность5 считывания информации, зафиксированной в счетчике.The disadvantage of this device is the relatively low reliability5 of reading information recorded in the counter.

Наиболее близким решением к изобретению является пересчетное устройство содержащее счетчик, триггер, регистр и блок элементов совпадения, выходы которого соединены с выходами пересчетного устройства, первый вход которого соединен с выходом счетчика, выходы которого соединены с входами регистра, выходы которого соединены с входами блока элементов совпадения, а второй вход пересчетного устройства соединен с информационным входом триггера [2].Недостатком такого устройства является относительно низкая достовер- . ность считывания информации, зафиксированной в счетчике.The closest solution to the invention is a recounting device containing a counter, trigger, register and block of matching elements, the outputs of which are connected to the outputs of the recounting device, the first input of which is connected to the output of the counter, the outputs of which are connected to the inputs of the register, the outputs of which are connected to the inputs of the block of matching elements and the second input of the conversion device is connected to the information input of the trigger [2]. The disadvantage of such a device is the relatively low reliability. the ability to read information recorded in the counter.

Цель изобретения - повышение достоверности считывания информации зафиксированной счетчиком.The purpose of the invention is to increase the reliability of reading information recorded by the counter.

Поставленная цель достигается тем, что в пересчетное устройство, содержащее счетчик, триггер, регистр и блок элементов совпадения, выходы которого соединены с выходами перес-:. четного устройства, первый вход кото рого соединен с выходом счетчика, выходы которого соединены с входами регистра, выходы которого соединены с входами блока элементов совпадения, а второй вход пересчетного устройства соединен с информационным входом триггера, введен инвертор, управляющий вход блока элементов совпадения соединен с выходом триггера, тактовый вход_которого соединен с первым входом пересчетного устройства и входом инвертора, выход которого соединен с тактовым входом регистра.This goal is achieved by the fact that in the recounting device containing a counter, trigger, register and block matching elements, the outputs of which are connected to the outputs re- :. even device, the first input of which is connected to the output of the counter, the outputs of which are connected to the inputs of the register, the outputs of which are connected to the inputs of the block of matching elements, and the second input of the counting device is connected to the information input of the trigger, an inverter is introduced, the control input of the block of matching elements is connected to the output a trigger, the clock input of which is connected to the first input of the conversion device and the input of the inverter, the output of which is connected to the clock input of the register.

На чертеже показана структурная схема пересчетного устройства. ₍ The drawing shows a structural diagram of a conversion device. ₍

Схема пересчетного /устройства содержит счетчик 1, триггер 2, регистрThe counting / device circuit contains counter 1, trigger 2, register

3, инвертор 4 и блок 5 элементов совпадения, выходы которого соединены с выходами 6 пересчетного устройства, первый вход 7 которого соединен с выходом счетчика. 1, выходы которого соединены с выходами регистра 3, выходы которого соединены с выходами блока 5 элементов совпадения, а вто-< рой вход 8 пересчетного устройства соединен с информационным входом триггера 2, управляющий вход блока *5 элементов совпадения соединен с выходом триггера 2, тактовый вход которого соединен с первым входом 7 пересчетного устройства и входом инвертора 4, выход которого соединен с тактовым входом регистра 3.3, the inverter 4 and the coincidence element block 5, the outputs of which are connected to the outputs 6 of the conversion device, the first input 7 of which is connected to the output of the counter. 1, the outputs of which are connected to the outputs of register 3, the outputs of which are connected to the outputs of block 5 of matching elements, and the second input 8 of the counting device is connected to the information input of trigger 2, the control input of block * 5 of matching elements is connected to the output of trigger 2, clock the input of which is connected to the first input 7 of the conversion device and the input of the inverter 4, the output of which is connected to the clock input of the register 3.

Пересчетное устройство работает следующим образом.The conversion device operates as follows.

Срабатывание счетчика .1 и регистра 3 осуществляется по переднему фронту положительного перепада напряжения импульса .The operation of the counter .1 and register 3 is carried out on the leading edge of the positive differential voltage pulse.

На вход 7 поступают импульсы типа меандр, по переднему фронту которого осуществляется смена состояния счетчика 1. Инвертор 4 инвертирует эти импульсы, которые затем поступают на регистр 3.The input 7 receives pulses of the meander type, on the leading edge of which the state of the counter 1 is changed. Inverter 4 inverts these pulses, which then go to register 3.

По переднему фронту положительного перепада импульсов типа меандр, с выхода инвертора 4 осуществляется фиксация информации счетчика 1, которая должна установится в счетчике к этому времени, которое равно половине периода счетных импульсов на входе 7.On the leading edge of the positive pulse difference of the meander type, from the output of the inverter 4, the information of the counter 1 is fixed, which should be installed in the counter by this time, which is equal to half the period of the counting pulses at input 7.

На выходах регистра 3 зафиксирована' информация с выходов счетчика 1, ко10 торая сохраняется.At the outputs of register 3, recorded information from the outputs of counter 1, which is stored.

В момент воздействия через вход 8 на информационный вход триггера 2 импульса считывания положительной 40 полярности, длительность которого должна быть не менее периода входных импульсовсчетчика 1, но не более 1,5 периода их. На тактовый вход триггера 2 поступает счетный импульс. 45 На единичном выходе триггера 2 формируется импульс положительной полярности , который поступает на управляющий вход блока 5 элементов совпадения , на выходах которого формируется jq информация с выходов регистра 3, снятая на 0,5 периода счетных импульсов позже их воздействия на вход счетчип ка 1.At the moment of exposure through input 8 to the information input of trigger 2 of a read pulse of positive polarity 40, the duration of which should be not less than the period of input pulses of counter 1, but not more than 1.5 of their period. The clock input of trigger 2 receives a counting pulse. 45 At a single output of trigger 2, a pulse of positive polarity is generated, which is fed to the control input of block 5 matching elements, at the outputs of which jq information is generated from the outputs of register 3, taken 0.5 periods of counting pulses later than their effect on the input of counter 1.

Рассмотрим, например, случай, когда импульс считывания воздействует на вход 8 в момент воздействия второй половины периода счетного импульса.Consider, for example, the case when a read pulse acts on input 8 at the time of exposure to the second half of the period of the counted pulse.

При наступлении очередного момента смены; информации, информация из регистра 3 установленная в счетчике 1 ранее, считана посредством блока 5 элементов совпадения.When the next shift occurs; information, information from the register 3 set in the counter 1 earlier, was read by means of block 5 matching elements.

таким образом,, точность информации на выходе блока элементов совпадения всегда не хуже периода счетных импульсов. Пересчетное устройство ^позволяет повысить надежность в работе устройства при съеме информации в процессе считывания при воздействии счетных импульсов на входе счетчика, а также исключить случай неопределенности в момент совпадения импульса считывания и счетного импульса на входе счетчика .Thus, the accuracy of the information at the output of the block of coincidence elements is always no worse than the period of the counted pulses. The recounting device ^ allows to increase the reliability of the device during information reading during reading under the influence of the counting pulses at the counter input, as well as to eliminate the case of uncertainty at the moment of coincidence of the read pulse and the counting pulse at the counter input.

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Claims

The invention relates to a pulse technique and can be used in digital systems of automatic control and control, as well as in measuring and computing complexes, for example, analog-code converters. A counting device is known which contains a counter, a block of match elements and a register, the inputs of KOTOjEioro are connected to the outputs of a block of matching elements, the inputs of which are connected to the outputs of the counter whose input is connected to the output of device 1. The disadvantage of this device is the relatively low reliability of reading information fixed in the counter. The closest solution to the invention is a scaling device containing a counter, a trigger, a register and a block of coincidence elements, the outputs of which are connected to the outputs of the calculating device, the first input of which is connected to the output of the counter, the outputs of which are connected to the inputs of the register, the outputs of which are - nor, and the second input of the counting device is connected to the information input of the trigger 2. The disadvantage of such a device is the relatively low reliability of reading the information rmatsii, s fixed in the counter. The purpose of the invention is to increase the reliability of reading information recorded by the counter. The goal is achieved by TeMj that a scaling device containing a counter, a trigger, a register and a block of coincidence elements, the outputs of which are connected to the outputs nepect of an even device, the first input of which is connected to the output of the counter, the outputs of which are connected to the inputs unit of elements of coincidence, and the second input of the counting device. connected to the trigger information input, an inverter is inserted, the control input of the block of coincidence elements is connected to the trigger output, the clock input of which is connected to the first input of the counting device and the inverter input, the output of which is connected to the register clock input. The drawing shows a schematic diagram of the counting device. The j-counting device circuit contains a counter 1, a trigger 2, a register 3, an inverter 4 and an off-set block 5, the outputs of which are connected to the outputs 6 of the counting device, the first input 7 of which is connected to the output of the counter. 1, the outputs of which are connected to the outputs of the register 3, the outputs of which are connected to the outputs of the block 5 of the matching elements, and the second input 8 of the counting device is connected to the information input of the trigger 2, the control input of the block 5 of the matching elements is connected to the output of the trigger 2, the clock input It is connected to the first input 7 of the scaler and the input of the inverter 4, the output of which is connected to the commodity input of the register 3. The counting device operates as follows. The operation of the counter .1 and the register 3 is carried out on the leading edge of the positive differential voltage pulse. The input 7 receives pulses of the square type, on the leading edge of which the state of the counter 1 is changed, Inverter 4 inverts these pulses, which then go to register 3. On the leading edge of the positive difference of the square wave-type pulses, information from the inverter 4 is fixed counter 1, which is to be installed in the counter by this time, which is equal to half the period of counting pulses at input 7. At the outputs of register 3, recording information from the outputs of counter 1, which is stored. At the moment of influence through the input 8 on the information input of the trigger 2 of the read pulse of positive polarity, the duration of which should be not less than the period of the input pulses of the counter 1, but not more than 1.5 of their period. A counting impulse arrives at the trigger input of trigger 2 At a single output of trigger 2, a positive-polarity impulse is generated, which is fed to the control input of a block of 5 ± ± s matching elements, the outputs of which generate information from the outputs of register 3 removed by 0.5 period counting pulses after they affect the input of counter 1. Consider, for example, the case when a read pulse affects input 8 at the time of the second half of the counting pulse period. At the next moment of change; The information, the information from register 3 set in counter 1 earlier, is read by means of a block of 5 matching elements. Thus, the accuracy of the information at the output of the block of elements of coincidence is always not worse than the period of the counting pulses. The scaling device Allows to increase the reliability of the device when picking up information in the reading process when exposed to counting pulses at the counter input, and also to eliminate the case of uncertainty at the moment of the read pulse coinciding with the counting pulse at the counter input. Claim Inventory A device containing a counter, a trigger, a register, and a block of match elements, the outputs of which are connected to the outputs of the counting device, the first input of which is connected to the input of the counter, the outputs of which are connected to the inputs of the register, the outputs of which are connected to the inputs of the block of the elements of the match, and the second The input of the counting device is connected to the information input of the trigger, characterized in that, in order to increase the reliability of reading the information recorded by the counter, the inverter is entered into it a torus controlling the input of the block of elements coinciding with the tripra output, the clock input of which is connected to the first input of the counting device and the input of the inverter whose output is connected to the clock input of the register. Sources of information taken into account in the examination 1. Gutnikov B.C. Integrated electronics in measuring instruments. L., Energie, 1974, p. 101.

2. Rumpf K, Pulvers M. Handbook of transistor circuits. World, M,, U965, p. 215 (prototype).