SU1363173A1 - Information input device - Google Patents

Abstract

The invention relates to automation and computing and can be used in information channel management systems. The purpose of the invention is to expand the field of application by switching the order of data input from the information channels. The device for entering information contains the first groups of elements AND, OR, a pulse generator, a trigger, a register, groups of elements BAN, a switch, the first element OR, the second group of elements AND, the second and third groups of elements OR, the second element OR, the element AND NOT , a group of majority elements. Device Provides direct, inverse, and variable order of priority polling of information channels according to a given program, which allows operative control of the sequence of information input without changing the electrical connection Q of SRI. 3 il. co 05 co

Description

eleven

The invention relates to automation and computing technicians and can be used in information channel management systems.

The aim of the invention is to expand the field of application of the device for inputting information by switching on the order of data input from information channels,

FIG. 1 shows a block diagram of the proposed device; in fig. 2- switch diagram; in fig. 3 is a time diagram of the operation of the device in the variable information input order mode.

The device contains a group of triggers, trigger 2, the second group of elements AND 3, -Zy, the second group of elements OR, the first group of elements AND 5, -5, the first group of elements OR 6, -b „, the third group of elements OR 7 , -7 „, BAN elements 8, -8„, element OR 9, generator 10 pulses, element И-ЕЕ 11, majority elements 2, -12, element OR 13, switch 14. Switch 14 (fig. 2) contains a group of elements And 15, -15 ,,.

The device works as follows.

A program for inputting information from channel sensors is recorded in triggers, each of which corresponds to a specific channel. Information from the channels is fed to the corresponding information inputs of the switch 14. After entering the program, the corresponding trigger (1, -) is set to one state. Here, depending on the state of the trigger 2, the input mode may change as follows. In the zero state of the trigger, 2 elements AND 5 are opened, which ensures a direct input order, in which each previous channel takes precedence over information input in relation to the next one. In the unit state of flip-flop 2, elements 3 are opened, which provides a reverse order of input, in which each successive channel takes precedence over the input of information relative to the previous one. The input mode is selected by applying pulse signals to the corresponding S-, R-inputs of trigger 2.

In the direct input order, trigger 2 is in the zero state.

R-,

,, five

P

five

0

five

0

73-2 elements and 5 are open. Signals from register bits 1, which are in a single state, arrive at the direct inputs of the corresponding BAN 8 elements and through the circuit of the AND 5, OR 6, OR 7 elements to the inverse inputs of all subsequent (their BANNER elements 8. For example, the signal from the output of the discharge I, if it is in the single state, enters the direct input of the BAN-8 element, and opens it, preparing for opening the majority element 12, and through the elements AND 5, OR the element 3AI1PET 8, through the elements OR 6 ,, AND 5, OR 7f,., - closes the elements of the Prohibition BH-I, through the elements OR 6, And 5п-1, OR 7h closes the BAN Sf, item. Thus, in the forward input mode, each previous bit of the trigger group with a single value disables the output circuits of all subsequent bits of the trigger group and disables polling them, while of the BAN 8 elements, only one of them is open, corresponding to the higher priority channel and the corresponding major element 13 is ready to open. In parallel after recording the input program to the trigger group at the output of the OR 6,., and 5 elements, a signal is generated that the cut element OR 9 is fed to the input of the pulse generator 10 and turns it on. The pulses from the generator 10 are fed to the second input element AND-NOT 11, which is closed in the absence of a control

signal at its first input, and at the entrance of majority elements 12. Since only one majority element 12 is prepared for opening, corresponding to the priority channel, the clock pulse from the generator 10 output opens this majority element. The open majority element 12 is blocked by a feedback circuit, which ensures that the clock pulse passes through it completely. The control pulse from the output of the majority element 12 is fed to the switch 14 and allows the input of information of this channel from the information input of the switch to its corresponding output. In addition, this control pulse is applied to the R input of the corresponding bit of the trigger group and zeroed it. In this case, this bit removes the signal eapresche31

nor with the corresponding elements OR 6 and 7, and there is a redistribution of priorities of the channels, i.e. permission to poll is obtained by the next unit bit of a group of triggers. At the same time, the indicated control pulse through the SHSh 13 closes for the time equal to its duration, all the elements of the BANNER 8, thereby eliminating the possibility of opening other major elements during the operation of this clock pulse during the redistribution of the priority

thetates in a group of triggers. After resetting C-input trigger 2, which for

In this group of triggers, the priority for polling is given the next 11th unit, which, similar to that described, keeps the chains of the next single bits 1 through the corresponding elements AND 5, OR 6, OR 7 in the disabled state and prepares the corresponding majority for opening - element 12. The next clock pulse of generator 10 opens it, and the described process repeats. After polling all the single bits of a group of triggers, the latter are zeroed out, channel information in a predetermined priority sequence is entered through the switch 14 into an external device, the signal from the outputs of the AND 5tT / 5 HJM 9 element is removed and the pulse generator 10 is turned off. The device is ready to receive in the group of triggers the following program for inputting information from the channels. In the reverse order of the input to the S input of trigger 2, a pulse is applied which sets it to one state. Trigger 2 closes And 5 elements and opens And 3 elements. In this case, the single signals of all subsequent bits of the Trig Device group for entering information containing the first group of elements

geors through the corresponding elements AND 3, OR 4, SHS 7 are fed to the inverse of 5 OR, the first group of elements AND, the gene inputs of all previous elements pulse generator, trigger, ban group 8. For example, the signal from the output of the trigger, S-inputs which is a single bit 1 "goes to the inputs of service requests for the input of the element BAN 8 and the device, the outputs of the group triggers connect it, preparing for opening 50 with direct inputs corresponding to the majority element 12, and through the prohibitive elements of the PROHIBITION, the exits by the group ents AND 3, OR 7 „., closes the triggers, except for the first one, connect the prohibition element 8ts,., through the elements, to the first inputs of the corresponding

OR 4,

And 3,

OR 1. - closes

., 9 2

the element BAN 8, through the elements OR 4g ,. AND 3i, OR 7, - closes the element BAN 8 ,. Thus, in the reverse order of input, each subsequent discharge of a group of triggers

with a single value, disables the output circuits of all previous bits of the trigger group and disables polling them. After recording the program of input into the group of triggers, the device works in the same way as described.

In the variable order mode, the input signal to the first input of the NAND 11 element is given, a potential signal, which prepares it for opening. The clock pulses from the output of the generator 10 are inverted by the element AND NOT P and are fed from its output to the clock.

0

five

0

The feedback count from the inverse output to the D input operates in the counting mode (Fig. 3). In each subsequent cycle, the state of trigger 2 changes, respectively, either elements AND 5 or I, 3 are opened, which provides a variable order of information input, similar to that described, from two groups of channels. In case, for example, if bits 1, 1 correspond to the first group of channels, and bits Iv.i, 1 to the second group of channels, then with a variable poll of the group of trigger points, the bits are polled, and therefore the channels are

order: 1 ,, 1,

g

1 „(fig. 3).

Thus, in the proposed device, a forward, reverse, variable order of priority polling of channels according to a predetermined program is provided, which allows operative control of the sequence of information input from the channels without changing the electrical connections.

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Claims (1)

Invention Formula Device for entering information containing the first group of elements OR, the first group of elements AND, the pulse generator, the trigger, a group of triggers, the S inputs of which are the inputs of requests for servicing the device, the outputs of the trigger groups of the group are connected to the direct inputs of the corresponding elements of the BANGE, the outputs of the group The triggers, except the first one, are connected to the first inputs of the corresponding OR elements of the first group, 55 switch, whose information inputs are the information inputs of the device, the switch outputs are the information outputs of the device, the control inputs of the switch 5J tori are combined with the corresponding H-inputs of the group triggers and the inputs of the first OR element, characterized in that, in order to expand the field of application by switching the transmission of data input from the information channels, the second group of elements AND, the second and third groups of elements OR, the second element OR, the element AND- NOT, the group of majority elements, the outputs of the group triggers, except the last, are connected to the first inputs of the corresponding elements OR of the second group, the input of the group triggers is connected to the first the course of the nth element of the second group, the first input of each element of the second group, starting from the first to the (n-1) -th element, is connected to the output of the next element OR the third group, the output of each subsequent element AND the second group connected to the first input of the corresponding OR element of the third group and the second input of the previous OR element of the second group, the second inputs of the AND elements of the second group are connected to the direct output of the trigger, the output of the first AND element of the second group is connected to the first input of the second element OR, the first output of the group flip-flops connected to the entrance of the first ele 0 31 with 0 five 0 73 And the first group, the first inputs of the second and subsequent elements of the AND group of the first group are connected to the outputs of the corresponding elements of the IL of the first group, the output of each element of the first group, except the last, is connected to the second inputs of the corresponding I. elements OR first and third groups, the second inputs of the elements And the first group is connected to the D-input and inverse output of the trigger, the output of the n-th element And the first group is connected to the second input of the second element OR, the output of which is connected to the input of the pulse generator, the output of which is connected to the second input of the element AND - Not the second inputs of the majoritarian elements, the first inputs of which are connected to the outputs of the corresponding. BENTER elements, the outputs of the majority elements are connected to their third inputs and the inputs of the first OR element, the output of which is connected to the first inverse inputs of the BAN elements, the second inverse inputs of which. ryh connected to the outputs corresponding to I. elements of the third group, the output of the NAND element is connected to the C-input of the trigger. The E-, whose inputs and the first input of the NAND element are inputs for setting the order of data entry. r-a rfni -VD Inf, Stitches SiiinuSbl