SU490144A1 - Display device - Google Patents

Description

one

The invention relates to the field of automation and computing.

A device for indication is known, which contains comparison circuits, the inputs of which are connected to registers, a code converter and a binary-decimal counter connected to a pulse generator, and the outputs of comparison circuits through shapers to control electrodes of digital-synthesizing indicators.

A disadvantage of the known device is the presence of high-power drivers providing the switching current of all the segments included in the digital indication indicators.

In order to simplify the device, it contains a pulse distributor and an AND block whose inputs are connected to a code converter and a pulse distributor associated with the overflow output of a DI counter. The outputs of the block elements "And connected to the segments of the digital indicators.

FIG. 1 shows a functional diagram of the device for display; in fig. 2 shows a temporary diagram of the operation of the device.

The device includes a pulse generator 1, a binary-decimal counter 2, comparison circuits 3, registers 4, drivers 5, digital indicators 6, a code converter 7, And 8 elements and a pulse distributor 9.

The principle of operation of the device is

next.

A pulse generator 1 with a binary-decimal counter 2 forms a cyclically varying poll code in the form of a sequence of a binary-decimal code of digits from

About up to 9. This code goes to the first inputs of the codes comparison circuit 3, the code from the output of registers 4, the state of which is to be displayed, is input to the second inputs of these circuits. If the counter code 2 matches

n code; In periCTpax 4, from the output of the comparison circuit 3, a positive pulse is sent to the control electrodes of the digital-sensing indicators 6 through the formers 5. In addition, from the output of the binary-decimal

the counter code is fed to the input of the converter 7, from which output the segment code is taken and passes to the second inputs of the AND 8 cell block. The overflow pulse from the counter is fed to the input of the distributor

9. The number of outputs of the pulse distributor is equal to the number of segments of the digital-synthesizing indicator 6. In the case of the use of seven segment synthetic synthesis indicators, their number is seven. Pulses are formed on the terminal of seven outlets.

in accordance with the timing diagram (Fig. 2), which, through the block "And 8", carry out successive excitation of it) meiits of 1 indicators, united by their rows. The diagram shows that the pulse distributor forms a cyclic continuity of seven pulses, the duration of each pulse is the duration of one revolution of the binary-decimal counter from O to 9, in other words, during the drying time of the impulse discharger, the binary-tenth counter forms the serial code is from O to 9. At the end of the cycle, a pulse of resonance triggers a pulse and a subsequent output of the distributor, etc. The outputs of the distributor of the pulses are connected to To the left inputs of the “And” block of elements, which are connected through the drivers to the segments of the digital-synthesizing indicators. At the same time, in one cycle of operation of the pulse distributor, i.e., when the emulsions are successively applied to the TC at all its outputs, all the first, then all the first, etc.) segments 1 and 1) growth of the stimulator are consistently excited. The pulses ia iU) ixo; i, ax of the block of elements “And are formed ;; in accordance with the segment code at the outputs of the code converter. Therefore, in each information only pn1-.e segments are recorded. The specific group of r.phrosynthesizing nn; and1cators is excited in [l; 1:

with M11 pulses at the output of the AND block, which, through the pulse shapers, are fed to the control electrodes of the digital sensor. In other words, for the first cycle of operation of the binary-decimal counter, when in its outputs the code of digits from O to 9 is successively followed, all the first segments of digits are reproduced, for the second cycle - all second segments, and

one cycle of the pulse distributor - all numbers in all digital-synthesis indicators.

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A display device containing comparison circuits, the inputs of which are connected to registers, a code converter and a binary-decimal counter, connected with a pulse generator, and the outputs of comparison circuits through controllers of digital synthesizing indicators, characterized in that

In order to simplify the device, it contains a pulse distributor and an AND block whose inputs are connected to a code converter and an imuls distributor associated with the binary overflow counter output, and the AND block block outputs are connected to segments of digital-synthesizing indicators.