SU243288A1 - REVERSIBLE RESETTLE DECADA - Google Patents

Description

The invention can be used in electronic computers.

Reversible counting decades are known, using as a working binary code, for example, the code "8421" implemented on static triggers, the outputs and inputs of which are connected in order of increasing the weights of the binary bits of the working code, with automatic deletion of code redundancies combinations.

It is also known that electronic computing machines find application, along with binary, non-binary codes.

Implementation of decimal accounts in electronic computers operating in the decimal number system and not used as a working binary decimal code is possible or in a binary decimal code by converting the original numbers into a binary decimal code and inversely converting the count results , or directly in the non-vertebral-decimal code.

The implementation of the decimal counting in the first method requires capacious code converter equipment and a significant consumption of computer time.

binary and non-binary code. This is achieved by implementing a reverse decade counting using a one-bit register, a key information distributor in three directions, controlled by mutually exclusive signals "Increase," Reduce, "Do not change, coming into the decade from the outside; the decoder of the working code into the code "one of the ten and the encoder

code "one of the ten in the tenth operational code.

Before the start of the count, the register receives the initial number, and in the counting process, the current or final result in the working decimal

code. The output of the register is connected to the input of the information distributor, the outputs of which are connected to the input of the decipher. The connection of the outputs of the information distributor with the input of the descrambler is made so that when

the presence of a control signal "Do not change the code of the number is fed to the input of the decoder without bias and is decrypted in the usual way, i.e., without changing its value; in the presence of a control signal

My signal. The output of the decoder is connected to the input of the encoder, and the output of the encoder is connected to the input of a one-bit register.

Each signal to be counted causes the code of a number in the register to circulate, i.e., exit from the register, sequentially pass through the information distributor, decoder, encoder, from the output of which the code of the number enters the register again. In this case, either an increase or a decrease in the value of the number code occurs, or the value of the number code does not change depending on what the control signal was. The control signal uniquely identifies the counting direction. Control signals come in a decade from the outside, each along its own bus.

A reverse decade is counted, due to the presence in it of the decoder of a decimal code in the code “one of ten, ensures the output of the counting results on a ten indicator.

The drawing shows the proposed decade.

It contains a one-bit register 1, a distributor of information 2 into three directions, a decoder 3 of a working decimal code into a code “one of ten, and an encoder 4 of a code” one of ten into a working decimal code.

The output of the register / connected by a group of code buses 5 with the input of the distributor of information 2; the output of the distributor 2 is connected by three groups of code buses & 7 and 5 with the input of the decoder 3, the output of which is connected by a group of code buses 9 to the input of the encoder 4. The output of the encoder 4 is connected by a group of code buses 10 to the input of the register /.

The information distributor consists of three keys, each of which controls a separate control signal that enters the distributor on one of three buses 11, 12, or 13.

The bus // into the distributor 2 receives the control signal "Zoom, which" allows the output of information from the distributor 2 to the group of tires 6.

Via bus 12, the distributor 2 receives the control signal “Reduce, which“ allows the output of information from the distributor 2 to the group of tires 7.

Via bus 13, the "Do not change," signal that "allows the output of information from the distributor 2 to the bus group 8" is sent to the distributor 2.

For a group of tires 8, a code of a number from register 1 enters a decoder 3, where one of ten is decoded into a code without changing its value.

For a group of 6 or 7, the code of the number from register 1 enters the decoder 3, where it is decrypted into the code of "one of the ten with increasing or decreasing its value by one in accordance with the presence of the control signal" Increase or "Reduce." The register / enters the bus 14 signal "Set to zero, as well as a group of tires / 5 - the code of the original number (if the account must

start with no zero).

Reversible recalculated decade works as follows.

Before the start of the counting, the signal “Setting to zero, which“ clears the register, enters the register / bus 14 ”. Then, if the counting should start not from zero, the initial number code is sent to register 1 via buses 15, then a control signal is sent to one of buses 11, 12 or 13 via distributor 2

"Increase," Reduce or "Do not change accordingly, under the influence of which the number code from register 1 enters along tire group 5 into distributor 2 and from the distributor along one of tire groups 6, 7 or 8 enters decoder 3, which decrypts the worker The ten code in the code is one of ten. Moreover, the code value increases or decreases by one or does not change according to what the control signal was. From the output of the decoder 3, one of the ten buses 9 receives the decoded number to the input of the encoder 4, which converts the code “one of the ten into a working decimal code. From the output of the encoder 4 code

the numbers come in - on the group of tires 10 at the input of the register /. This is where the decade cycle ends.

The further counting process proceeds similarly. The dim indicator 16 can

be connected to a group of tires 9.

Based on the proposed reversal recalculation decade, multi-bit reversible counters can be implemented. For this purpose, in addition to the control signals "Zoom and Decrease and code bus groups," the Do not change signal, which enters the information distributor, and the code bus group, which circulate codes without changing their values, serves.

Subject invention

A reverse decade, characterized in that, in order to expand the logical possibilities and universalize its structure, it contains a one-bit register, the output of which is connected by code buses to the information distributor associated with the decoder input, the output of the latter is connected to the input of the encoder and indicator, and the output of the encoder is associated with the input of a one-bit register.

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