RU2065251C1

RU2065251C1 - Converter from binary-decimal code to code of seven- segment indicator

Info

Publication number: RU2065251C1
Authority: RU
Inventors: Юрий Александрович Яранцев
Original assignee: Юрий Александрович Яранцев
Priority date: 1991-12-13
Filing date: 1991-12-13
Publication date: 1996-08-10

Abstract

FIELD: computer engineering. SUBSTANCE: logical unit and new connections between units of converter are introduced to accomplish the goal of invention. In particular, three feedback connections connects outputs of converter and its additional inputs, which are connected to inputs of corresponding units of converter. This results in possibility of conversion of not only 8-4-2-1 code but also 2-4-2-1 code while number of units multiplied by number of connection is decreased by factor of three. EFFECT: increased functional capabilities. 1 dwg, 1 tbl

Description

Изобретение относится к вычислительной технике и может быть использовано в бортовых и наземных информационно-измерительных системах. The invention relates to computer technology and can be used in airborne and ground-based information-measuring systems.

Известен преобразователь двоично-десятичного кода в код семисегментного индикатора /1/. Недостатком известного преобразователя /1/ являются ограниченные функциональные возможности, не позволяющие производить также преобразование двоично-десятичного кода 2-4-2-1 в код семисегментного индикатора при преобразовании единого информационного потока в бортовых и наземных информационно-измерительных системах, использующих оба указанных вида кода, единой простой и надежной схемой, без коммутации входных и выходных сигналов, при существенном сокращении аппаратурных затрат по сравнению со схемой, включающей раздельные преобразователи указанных кодов. A known converter of binary-decimal code to seven-segment indicator code / 1 /. A disadvantage of the known converter / 1 / is the limited functionality that also does not allow the conversion of the binary decimal code 2-4-2-1 to the seven-segment indicator code when converting a single information stream in airborne and ground-based information-measuring systems using both of these types of code , a single simple and reliable circuit, without switching input and output signals, with a significant reduction in hardware costs compared to a circuit that includes separate converters The specified codes.

На чертеже представлена схема преобразователя. The drawing shows a diagram of the Converter.

Преобразователь двоично-десятичного кода в код семисегментного индикатора содержит входы 1-5, элементы ИЛИ 6,17-19, 21, 22, элементы И 7-9, 11, 14, 16, 20, элементы ИЛИ-НЕ 10, 12, 15, элемент И-НЕ 13, индикатор 23, входы индикаторы 24-30. The binary-decimal code to seven-segment indicator code converter contains inputs 1-5, OR elements 6.17-19, 21, 22, AND elements 7-9, 11, 14, 16, 20, OR elements NOT-10, 12, 15 , AND-NOT element 13, indicator 23, inputs indicators 24-30.

Преобразователь работает следующим образом /см. также таблицу 1, в случае двух цифр в клетке таблицы 1 первая из них соответствует коду 2-4-2-1, вторая коду 8-4-2-1/. The converter operates as follows / cm. also table 1, in the case of two digits in the cell of table 1, the first one corresponds to code 2-4-2-1, the second code 8-4-2-1 /.

На входы 1-5 преобразователя поступают сигналы входного кода 2-4-2-1 либо 8-4-2-1, соответствующие цифрам "0-9", причем на входы 1-4 поступают в инверсной форме сигналы кода, начиная со старшего /четвертого/ разряда, а на вход 5 поступает в прямой форме сигнал младшего /первого/ разряда кода. При подаче указанных сигналов на входы преобразователя /или с их участием/ формируются сигналы на выходах элементов 6-11, 13-19. Сигнал с выхода элемента 16 поступает на вход 24 индикатора для гашения его первого сегмента и одновременно по цепи обратной связи на входы элементов 21 и 22, на другие входы которых поступают соответственно сигнал с выхода элемента 15 и сигнал младшего разряда 5. Сигнал с выхода элемента 17 поступает на вход 25 индикатора для гашения его второго сегмента и одновременно по цепи обратной связи на вход элемента 20, на другой вход которого поступает инверсный сигнал младшего разряда 4, сигнал с выхода элемента 20 поступает на вход 28 индикатора для гашения его пятого сегмента. Сигнал с выхода элемента 21 поступает на вход 29 индикатора для гашения его шестого сегмента и одновременно по цепи обратной связи на вход элемента 12, на другие входы которого поступает сигнал 2 и выходной сигнал элемента 10. Inputs 1-5 of the converter receive input code signals 2-4-2-1 or 8-4-2-1, corresponding to the digits "0-9", and inputs 1-4 receive code signals in inverse form, starting with the highest / fourth / bit, and input 5 receives a direct signal of the low / first / bit code. When these signals are supplied to the inputs of the converter / or with their participation / signals are generated at the outputs of elements 6-11, 13-19. The signal from the output of the element 16 is fed to the input 24 of the indicator to extinguish its first segment and at the same time through the feedback circuit to the inputs of the elements 21 and 22, the other inputs of which respectively receive the signal from the output of the element 15 and the signal of the lower order 5. The signal from the output of the element 17 enters the input 25 of the indicator to extinguish its second segment and at the same time through the feedback circuit to the input of the element 20, the other input of which receives the inverse signal of the least significant bit 4, the signal from the output of the element 20 goes to the input 28 of the indicator for the extinguishing I had the fifth segment. The signal from the output of element 21 enters the indicator input 29 to extinguish its sixth segment and at the same time through the feedback circuit to the input of element 12, to the other inputs of which signal 2 and the output signal of element 10 are supplied.

Сигнал с выхода элемента 12 управляет элементом 19, сигнал с выхода которого поступает на вход 27 индикатора для гашения его четвертого сегмента. The output signal of the element 12 controls the element 19, the output signal of which is fed to the input 27 of the indicator to extinguish its fourth segment.

Сигналы с выходов элемента 18 и 22 поступают соответственно на входы 26 и 30 индикатора для гашения его третьего и м седьмого элементов. The signals from the outputs of the element 18 and 22 are respectively supplied to the inputs 26 and 30 of the indicator to extinguish its third and seventh elements.

В преобразователе предполагается использование полупроводникового семисегментного индикатора с общим анодом. The converter is supposed to use a seven-segment semiconductor indicator with a common anode.

Claims

A binary-decimal code to seven-segment indicator code converter containing an AND-NOT element and an indicator, characterized in that six OR elements, seven AND elements and three OR-NOT elements are entered into it, the first input of the first of which is combined with the first input of the first element OR is the first input of the converter, the second input of which is the first inputs of the first and second elements AND and the second element OR NOT, the second input of which is combined with the second input of the first element And is the third input of the converter, and the output is connected to the first inputs of the third elements OR-NOT and AND, and the second input of the first element OR-NOT, the third input of which is combined with the first input of the indicator and connected to the output of the second OR element, the first input of which is combined with the first input of the third OR element, the second the indicator is connected to the output of the fourth AND element, the first input of which is combined with the second input of the third OR-NOT element and is connected to the output of the first OR element, the second input of which is combined with the first inputs of the NAND element, the fifth AND element is the fourth input of the converter, the fifth input of which is the second input of the third OR element, the output of which is connected to the third input of the indicator, the fourth input of which is connected to the output of the fifth AND element, the second input of which is combined with the fifth input of the indicator and connected to the output of the fourth OR element, the first the input of which is combined with the first input of the fifth OR element, the second input of the second OR element and is connected to the output of the third OR-NOT element, the third input of which is combined with the first input of the sixth AND element, w The input of the fourth element And is connected to the output of the first element And, while the second inputs of the second, third and sixth elements And are combined and are the first input of the converter, and the output of the third element And is connected to the first input of the sixth OR element, the output of which is connected to the sixth input indicator, and the second input is connected to the output of the first element OR NOT, the output of the second element AND is connected to the first input of the seventh element And, the second input of which is combined with the third input of the fourth element And and connected to the output of the element AND NOT, the second input of which is combined with the second input of the fifth OR element and connected to the output of the sixth AND element, and the output of the seventh AND element is connected to the second input of the fourth OR element, the output of the fifth OR element is connected to the seventh indicator input.