SU1348809A1 - Information input multichannel device - Google Patents

Abstract

The invention relates to computing and may be. G is used in input control information devices in a computer. The invention makes it possible to increase the reliability of the input of information while increasing the speed and increasing the number of independent input channels. This goal is achieved by the fact that in each channel the reception trigger 1 is reset by a short pulse generated by the short pulse shaper 4 at the moment information is output from trigger 2 through the And 3 element, which allows trigger 1 to be used to further receive information. 3 il. § (L 00 4 00 00 o; o

Description

The invention relates to computing and can be used in control input devices in a computer.

The purpose of the invention is to increase the reliability of information input.

FIG. 1 is a functional diagram of a multi-channel information input device; FIG. 2 shows an example of the implementation of a short pulse shaper; FIG. 3 - time diagram of the device.

The device contains a group of trigger triggers 1, a group of trigger triggers 2, a group of elements AND 3, a group of shapers 4 short pulses, information inputs 5, outputs 6, input 7 reading and element 8.

The imaging unit 4 may be made in the form of a differentiating chain, containing two elements AND-HE 9, 10, a diode 11 and a capacitor 12.

Each channel of the multi-channel information input device operates as follows.

Let us take the initial zero state of all the triggers.

The leading edge of the signal received by the information input 5 to the input of the installation of the trigger 1, sets it to one state.

The signal from the output of trigger 1 passes through a high potential to the synchronization input of trigger 2, to its output and to the first input of element 3. When a reading pulse arrives at input 7, the output of element 8 does not receive a signal corresponding to O. Trigger 2 issues the signal with the output of trigger 1 at the time of the negative edge of the signal at the synchronization input of this trigger and remains in this state for the entire duration of the read signal. If the trigger 1 of reception was in one state, then the signal 1 n appears at the output of element 3 about the leading edge of which shaper 4 will form a narrow impulse that

the reset input will reset the receive trigger 1 to the zero state. When a pulse appears at the information input 5, during the reading pulse operation, input 7 trigger 1 is set to one, but signal 1 from its output to trigger output 2 of the sensor arrives only at the end of the read signal, and output 6 only by the next read pulse (Fig. 3).

The differentiating chain allows forming a narrow pulse along the leading edge of the positive signal. When a positive signal arrives at the input of the differentiating chain at its output (the output of the AND-NE element 10 a negative pulse appears, the duration of which is determined by the recharging time of the capacitor 12 through the AND-HE element 9.

Claims (1)

Invention Formula A multichannel information input device containing an NOT element, a group of receive triggers, a group of issuing triggering groups, and a group of elements; with the first inputs of the elements AND groups, respectively, whose outputs are the outputs of the device, the reading input of which is connected to the second inputs of the elements AND of the group and through the element NOT to from odes synchronization triggers dispensing groups, wherein ec in that, in order to increase the reliability of information input into it is introduced a group of short pulse shapers, and the AND vghody group conditioners are connected via respective short pulse group with the respective reset inputs of flip-flops receiving group. Srig. 2 Fig.Z