SU911725A1

SU911725A1 - Converter of position code to libau-kraio code

Info

Publication number: SU911725A1
Application number: SU782682743A
Authority: SU
Inventors: Олег Дмитриевич Мураховский; Виктор Александрович Бындыч; Иван Никодимович Евстрат; Надежда Ивановна Мураховская; Александр Борисович Скрипник
Original assignee: Предприятие П/Я А-3903
Priority date: 1978-11-10
Filing date: 1978-11-10
Publication date: 1982-03-07

Description

Изобретение относитс к кодированию информации и может быть использовано .в ЦВМ и приборах автоматики, в частности, в блоках ввода информации .The invention relates to the coding of information and can be used in digital computers and automation devices, in particular, in information input blocks.

Известен преобразователь позиционного хода в код Либау-Крейга, содержащий п ть счетных триггеров, включенных по схеме счетчика Джонсона 1.The known converter of the positional motion into the Liebau-Craig code, containing five counting triggers, included according to the scheme of Johnson's counter 1.

Данное устройство, имеет большое количество оборудовани и обладает ни экимбыстродействием.;This device has a large amount of equipment and has no immediate effect .;

Наиболее близким к предлагаемому по технической сущности и достигаемому результату вл етс преобразователь позиционного кода в код ЛибауКрейга , содержащий счетчик и элементы И-НЕ 2. The closest to the proposed technical essence and the achieved result is the converter of the positional code into the Liebau Craig code containing the counter and the elements AND-NOT 2.

Это устройство тйкже имеет большое количество оборудовани и невысокое быстродействие из-за длительного процесса последовательного преобразовани несмежных величин позиционного кода в код Ли 5ау-Крейга .This device also has a large amount of equipment and low speed due to the lengthy process of successively converting non-adjacent values of the position code to the Lee 5-Craig code.

Цель изобретени - упрощение преобразовател и повьнаение его быстро действи .The purpose of the invention is to simplify the converter and bring it up quickly.

Указанна цель достигаетс тем, что в преобразователь, содержащий элементы И-НЕ,введен инвертор, выход которого соединен с, первым входом первого элемента И-НЕ цепочки последовательно соедийенных дес ти элементов И-НЕ, выход последнего из которых соединен с входом инвертора, выходы п ти младших разр дов преоб10 разовател подключены соответственно ко вторым входам нечетных элементов И-НЕ, а выходы п ти старших разр дов подключены соответственно ко вторым входам четных элементов This goal is achieved by introducing an inverter into the converter containing the AND-NES elements, the output of which is connected to the first input of the first AND-NO chain of the sequentially connected ten AND-NOT elements, the output of the last of which is connected to the input of the inverter, the outputs five low-order bits of the converter 10 are connected respectively to the second inputs of odd elements NAND, and the outputs of the five higher bits are connected respectively to the second inputs of even elements

15 И-НЕ, выходы которых соединены с выходами преобразовател .15 AND-NOT, the outputs of which are connected to the outputs of the converter.

На фиг, 1 приведена функциональна схема преобразовател позиционного дес тичного кода в код Либау20 Крейга; на фиг. 2 - таблица соответстви преобразуемых кодов,Fig. 1 shows a functional diagram of a converter of a positional decimal code into a Craig's Liebau20 code; in fig. 2 - table of convertible codes,

Преобразователь содержит цепочку последовательно соединенных между собой двухвходовых элементов И-НЕ 125 10 и инвертор 11. Входы 12 - 21 преобразовател соединены со вторыми входами элементов И-НЕ 1 - 10, причем входы 12, 14, 16, 18 и 20, вл ющиес соответственно входами The converter contains a chain of two-input AND-HE 125 10 elements sequentially interconnected and an inverter 11. Inputs 12- 21 of the converter are connected to the second inputs of the AND-NE elements 1-10, with inputs 12, 14, 16, 18 and 20 being respectively entrances

Claims

30 О -г .4 least significant bits of the input position decimal code, are connected. -with the second inputs of the elements AND-NOT 1,3, 5, 7, and 9, and the inputs 13, 15, 17, 19, and 21, which are respectively the inputs 5-9 of the higher bits to the input code, are connected to the second inputs of the elements AND- NOT 2, 4, 6, 8 and 10. The outputs of the elements AND-NOT 2,4,6, 8 and 10 are connected to the outputs of the converter. The Converter operates as follows. Some value of the positional decimal code on. The input of the converter is characterized by the presence in the corresponding discharge of a low voltage level and high voltage levels on the other inputs of it. For example, the decimal positional code zero is characterized by the presence of a low voltage level at the input of its zero discharge (input 12) and high voltage levels at its remaining inputs, and the decimal position code of the unit is characterized by the presence of a low voltage level at the input its first discharge (input 14) and high voltage levels at its other inputs, etc. The appearing low voltage level at one of the converter inputs sets the corresponding logic level at the output of the converter located on the right (in Fig. 1) from dannog about the entrance. Moreover, due to the connection of the output of the INE 10 element with the input of the element NE -1 through the inverter 11, the logic levels at the outputs of the converter / located to the left (in FIG. 1) of this input are opposite to the logic levels located to the right of this input. At the same time, when low voltage is applied to one of the inputs 12, 14, 16, 18, and 20 (respectively, the inputs are 0.1, 2, 3, and 4 times the sequence of the positional decimal code at the device outputs (outputs of code bits Libau-Craig), located to the right of this input, forms a low voltage level (logic level O) and to the left is a high voltage level (logic level 1) i When a low voltage level (logic level O) is applied to one of the inputs 13, 15, 17/19 or 21 (respectively, the inputs are 5/6, 7, 8, and 9 times the sequence of the positional decimal code at the outputs The generator (outputs of the Liebau-Craig code) located to the right of this input produces a high voltage level (logic level 1), and a low voltage level (logic level O) on the left. Thus, the presence of a low level at one of the The inputs of the positional decimal code of the converter breaks up the set of outputs of the bits of the Liebau-Craig code into two groups, in each of which the logic levels are identical, and due to the inverting connection, the logic levels of these groups are mutually opposite. A characteristic feature of the proposed converter is the possibility of alternating input numbers in any sequence, i.e., a fast, direct non-consecutive conversion of the position code of the Liebau Craig is provided. The converter has a simple structure, a small number of internal connections and a small amount of equipment. The invention of the Position Code Converter to the Liebau-Craig Code, contains NOT-N elements, characterized in that, in order to simplify and improve speed, an inverter is inserted into it, the output of which is connected to the first input of the first AND-N chain of ten connected in series AND-NOT elements, the output of the latter of which is connected to the input of the inverter, the outputs of the five low-order bits of the converter are connected respectively to the second inputs of the odd AND-NOT elements, and the outputs of the five higher-order bits, respectively, to t To the input inputs of even NAND elements, the outputs of which are connected to B1 of the converter. Sources of information taken into account in the examination 1.Gutkin B.C. Integrated electronics in measuring devices. L., Energie, 1974, p. 65.

2. Design of microelectronic digital devices. Ed. S.A.Mayorova, M., Sov. Radio, 1977, p. 183 (prototype).

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