SU1711336A1 - Device for successive checking of code - Google Patents

Abstract

The invention relates to computing and data transmission, can be used for sequential control of a two-character code. The purpose of the invention is to expand the scope of application due to the ability to control a two-symbol shoe. This goal is achieved by introducing into the device containing the counter 1, prohibition elements 2 and 3 and the OR element 4 of new communications. The device can be used in arithmetic logic devices, memory devices and communication channels. 1 -il.

Description

sh

IB

with

GO Oh

The invention relates to computing and data transmission, can be used for sequential control of two-symbol waveform.

The purpose of the invention is to expand the scope of use due to the ability to control a two-character code.

The drawing shows a diagram of the device for sequential control code.

The device contains a counter 1, the first and second elements 2 and 3 of the prohibition, the element OR 4, the information input 5 of the device, the output 6 errors of the type of transition to a unit of the device, the output 7 errors of the type of transition to a device zero, the clock input 8 of the device, the input 9 of the device .

In a two-character code, the unit is represented as 10, and zero, respectively, as 01. This encoding method makes the quantity 1 and O in the code equal.

The code given in this way is controlled in pairs 10 and 01.

by formulas

-o --- m

M

X.VX,

M

x, x,

ABOUT)

Counter 1 is for totalizing counting 1 and subtracting.

ABOUT.

Mcll

counting the U. The initial state of the counter 1 - 3. Prohibition element 2 - to issue an error signal at output 6 (transition type 0-1), when counter 1 is in state 5 transition type 1-0)., then counter 1 is in state 11.

When an error is issued by these elements, the counter 1 is also reset to the initial state via the OR 4 element, in addition, the counter 1 can be reset to the initial state using the input 9 of the setup.

The device works as follows.

Let input code 5 be input. Since counter 1

has an initial state

and 1 to

3, and

the character code for 1 always follows O and vice versa, then counter 1 will be in x 2, 3, and 4. If there is a distortion in the pair

five

0

five

0

five

0

five

0

five

1-0 transitions get 00, subtracting two units from the state of counter 1, these two zeros will set counter 1 to state 1 (after passing each bunk 10 and 01, counter 1 remains in its original state 3). When the state of the counter 1 - 1, the prohibition element 3 issues a signal at output 7, the error type is 1-0 and sets the counter 1 to the initial state 3 through the element OR 4. 1 state 5, in this case, prohibition element 2 generates an error signal at output 6, error type 0-1, and using element OR 4 sets the counter to the initial state 3. Thus, formulas (1) are realized. If necessary, counter 1 can be reset to the initial state 3 by means of input 9 of the installation.

Claims (1)

Invention Formula A device for sequential control of a code containing a counter, the first and second prohibition elements and the OR element, the device’s information input connected to the forward totalizing input of the counter, the clock input of which is connected to the device’s clock input, the output of the second discharge of the counter the prohibition element, the output of which is the output of the fmia transition error in 1 device, the output of the third p vd counter is connected to the first information input of the first prohibition element, the output of the second element And the prohibition is 1- output error type transition in O device, characterized in that, in order to expand the scope by providing the ability to control a two-character code, the output of the first digit of the counter is connected to the second information input of the first prohibition element and to the information input of the second element the bar, the outputs of the second and third bits of the counter are connected respectively to the first and second control inputs of the second bar element, the output of the first bar element, the device installation input and Exit second barring member connected respectively to the inputs of OR member, the output of which e 17113366 connected to the installation input of the counter is connected to the informational chick, the inverse subtracting input by the code of the device.