SU1689941A1 - The multichannel data input device - Google Patents

Abstract

The invention relates to computing and electronics and can be used to reset statistical information. The aim of the invention is to increase the speed and simplify the device. The device contains switches 1 and 4, channel selection block 12, group 3 counters, trigger 5, counters 6 and 11, control block 7, pulse generator 8, first and second elements 7 and 10. Each device channel can operate in accumulation mode information or in the mode of information transfer, when the active level signal from the output of block 2 of channel selection, 5 Il.

Description

The invention relates to computing and electronics, can be used to collect statistical information.

The purpose of the invention is to increase the speed and simplify the device.

Figure 1 shows the functional diagram of the device; on Fig - diagram of the input switch; FIG. 3 is a diagram of a channel selection block; Fig. 4 - are diagrams for explaining the operation and interaction of the memory elements; Fig. 5 shows timing diagrams explaining the operation of the device as a whole.

The multi-channel information input device comprises switch 1, channel selection block 2, group 3 counters, second switch 4, trigger 5,

first counter 6, control unit 7, pulse generator 8, first 9 and second 10 elements And, second counter 11, bus 12 issuing a code

Switch 1 may consist of AND 13 and OR 14 elements (Fig2). It can also be implemented on the basis of two-input multiplexers (according to the number of channels) controlled by the channel selection unit. Some of the multiplexer inputs are connected to the outputs of the input driver, respectively, while others are connected to the output of the And 9 element, the control inputs are connected to the outputs of the channel selector 2.

Channel selection unit 2 can be performed according to the scheme shown in FIG. In this case, it includes a counter 15, a decoder 16 and a key, with the outputs of the counter being connected

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They are connected to the inputs of the decoder 16, the key is connected to the power supply by one and the other, and the middle output to the counting input of the counter, the outputs of the decoder 16 are the outputs of the channel selection unit. Using this block, select the channel from which information is read in the information retrieval mode. You can use any multi-position switch (for example, a wafer switch) as a channel selection block.

Switch 4 may consist of AND elements and an OR element. In this case, some inputs of the And elements are connected to the outputs of the counters 3 and are the inputs of the switch, and others to the outputs of the channel selection block 2 (the last link is not shown in Fig. 1). If the signals at the outputs of the counters 3, when they are completely filled, appear briefly, and the conversion factor (division) is large enough (i.e., the memory is large), the switch 4 can be made as an OR element, and the inputs of the latter are the inputs the switch and the output of the OR element is the switch output. If there is a binary code at the output of the channel selection block 2, the switch 4 can be made as a multiplexer.

The control unit 7 may consist of a trigger and a button. In this case, one button and the other terminals are connected to the positive pole of the power source and the common point of the device, respectively, the middle button output is connected to the trigger setup input in the unit state, the trigger setup input in the zero state is input to the control unit 7, the output unit of the control unit 7 is a direct trigger output.

Each channel of the device can operate in the mode of accumulating information or in the mode of transmitting information, and at the same time in the mode of transmitting information there can be only one channel, at the input of the channel selection of which an active level signal is present.

The sequence of operation of the device is considered for one of the channels.

Fig. 4 shows in rectangular shape 17 and 18, respectively, the memory size of the counter 3 of one of the channels.

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and counter 6, part of the volume

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moreover, the filled memory is shaded. The device in the mode of accumulation of information works as follows. Input signals in the form of several sequences of rectangular pulses, one of which is shown in Fig. 5 (pos. 19, 20), are fed to the inputs of switch 1. As the channel operates in the information accumulation mode, the exact same signal appears on corresponding to the output of switch 1 and is fed to the input of the corresponding counter of group 3. The output signal of counter 3 is represented by pos. 21 in FIG. Let, before changing the channel's mode of operation, counter 3 counted m pulses, which came to its input, up to time point C, the mode of operation change is determined by the appearance of the active level signal at the corresponding output of the channel selection block 2 (position 22), and after pressing the button and the appearance of the active level at the output of control block 7 (pos.23) at the output of the first element And 9 appears a signal (pos.24), which repeats the signal of the pulse generator 8 (pos.20), which is fed through switch 1 to the input of the counter group 3 and continues to fill the count 1 a. At the same time, the same signal arrives at one input of the element AND 10 and at the input of the counter 6 "The filling of the latter begins. After filling the entire memory volume of the group 3 counter, a time (t) appears at the output of switch 4, (25), which triggers trigger 5 (active 26), and the active level of the signal at the output of the latter allows element output AND 10 signals arriving at one input of the latter. The output signal of the element 10 is shown in figure 5. The time t corresponds to the filling of the counters shown in FIG. when the counter 6 is completely filled (figv) and a signal appears at its output (pos 28), which switches the control unit 7 and the trigger 5 to the initial states, thus filling the counter of group 3 and counter 6 at time points ti and t ", with

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completely identical, and the information is read from the outputs of the counter 11 to the buses 12 to issue the code. At the end of the read cycle, the buffer counter is cleared from the information, and the same information is entered into the read counter.

The installation of the counter 11 in the initial state at the beginning of each cycle of reading the information occurs automatically by applying a short signal from KHOi. . and a control unit or from the output of the block 7 to the input to the zero setting of the counter 11. To ensure the short duration of this signal between the output of the block 7 and the input to the zero setting of the counter 11, a time element limiting the signal duration is included. This link is not shown in FIG.

It is possible to set up all the counters and triggers to the initial state; it is necessary, for example, when the power is turned on, from a special button or automatically,

All switching elements that are switched by hand may be protected from chatter.

The device may contain a time relay (not shown in FIG. 1) connected at the same input of the element 10 and 10 or between the output of the latter and the input of the counter 11, which prevents a short pulse of interference to the counter 11 that may occur at the output of the element 10 due to possible non-simultaneous operation of the device elements.

The device will easily naraschig

memory volume both by the number of channels and the channel memory. Thus, as the number of channels increases, the number of counters 3, respectively, increases, and somewhat complicates

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Claims (1)

Baoki 1, 2, 4 (increase the number of mutated channels). The amount of memory of the channel is easily increased in 2 times by an increase in the number of triggers per a gate in the counters of group 3 and an increase in the number of bits in the counter 11 and on 12 of the code output. The remaining blocks and elements, as well as the number of physical connections between them do not change. A multi-channel information input device containing a group of counters, the first and second switches, characterized in that, for the purpose of speed and simplification, a channel selection block, a pulse generator, the first and second elements AND, the control block, the first and second counters are entered into it The trigger, the information inputs of the group of the first switch are the inputs of the device, the outputs of the first switch are connected to the inputs of the respective counters of the group, the outputs of which are connected to the inputs of the second switch, the output of which go is connected to the trigger setup input, the output of which is connected to the first input of the second element I, the second input of which, the input of the first counter and the information input of the first switch are connected to the output of the first element I, the first input of which is connected to the output of the pulse generator, the output of the first counter is connected to the trigger reset input and the control unit input, the output of which is connected to the second input of the first element I, the outputs of the channel selection block are connected to the address inputs of the first switch, the output of the second element I with one with the input of the second counter, the outputs of which are the outputs of the device. Fmz 17 1Q 17 16 17 id Uti FIG. five