SU1282131A1 - Multichannel device for processing interrogations - Google Patents

Description

The invention relates to computing technology, in particular, to devices for managing the service sequence, and can be used in the construction of various automation devices and information measuring equipment.

The purpose of the invention is to reduce the search time for the priority request.

The drawing shows a block diagram of the device.

The multichannel request processing device contains a shift register 1, a prohibition element 2, an OR element 3, a group of flip-flops 4, a group of And 5 elements. a group of elements OR 6, a group of triggers 7, a group of ele. And 8, a group of device outputs 9, a device polling input 10, query inputs 11 and a clock input 12 of the device.

The device works as follows .-.

In the initial state, the triggers 4 and 7 are in the zero state, and in the shift register 1 the unit is written in the first bit.

When pulses are received at the device's input 12, the unit sequentially shifts the bits of register 1. From its outputs, a single signal is sequentially fed to the first inputs of the And 5 elements. In the absence of requests from the outputs of the And 5 elements, zeros arrive, which are received through the OR 3 element on the inverse stroke of the prohibition element 2, which allows unit shift in register 1. From the output of the last digit. register 1 unit on the ring is written to its first bit,

The service request signals are sent to the corresponding triggers 4, from the outputs of which are sent to the second input; corresponding elements and 5.

A single signal at the output of the corresponding element AND 5 appears in the case of coincidence of signals from the corresponding output of the 1-shift register and the trigger 4. The unit from the output of the AND 5 element enters the inputs of all the elements of the OR 6 group, the input of the corresponding trigger 7, is set it to the unit state, and to the corresponding input of the element OR 3, From the output of the last one, the unit enters the installation input of register 1, set

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loading it into the initial state, and the inverse input of the prohibition element 2, prohibiting the arrival of clock signals providing a unit shift to the register 1.

Since a unit is removed from the output of the corresponding element OR 5 in this case, the next clock pulse shifts the unit in register 1, and only requests with numbers, starting with the first, are processed.

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Claims (1)

Invention Formula A multichannel device for processing requests that contains two groups of triggers, the first group of elements AND, the first input of each of which is connected to the output of the corresponding trigger of the first group, the output of each element of the first group is connected to the single input of the corresponding trigger of the second group, the single input of each trigger of the first group is connected to the corresponding request input of the device, characterized in that, in order to reduce the search time of the priority request, a shift register is entered into it, t prohibition, the OR element, the group of the OR elements and the second group of the AND elements, and the inputs of the OR element are connected to the outputs of the AND elements of the first group of the second inputs of each of which are connected to the corresponding outputs of the shift register bits, the installation input of which is connected to the output of the OR element and the inverse input of the prohibition element, the output of which is connected to the shift shift register input, the direct input of the prohibition element is connected to the device's clock input, the reset inputs of the second group of flip-flops, except the first, are connected with the outputs of the corresponding elements OR groups, the inputs of each of which are connected to the outputs of all the preceding elements AND of the first group, the outputs of the second group of flip-flops are connected to the first inputs of the AND elements of the second group, the second inputs of which are connected to the device polling input, the outputs of the device and are connected to the reset inputs of the corresponding triggers 31282131 the first group and with the inputs of the cops of the corresponding elements OR of the dinene group, and the output of the first eleganger And the second group is connected to the reset inputs of the third group.