SU666647A1 - Pulse counter with digital indication - Google Patents

Description

(54) PULSE COUNTER WITH DIGITAL INDICATION

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This invention relates to a pulse technique.

A pulse counter with digital indication is known, containing triggers, logic elements and a decoder, matching elements and a digital indicator, while the inputs of logic elements and the state decoder are connected to the trigger outputs, and the output is via matching elements with inputs of digital indicator 1.

However, this counter is characterized by insufficient accuracy of operation.

The closest in technical essence to the proposed is a pulse counter containing triggers, logic elements AND a decoder, a block of matching elements, a digital indicator and logic elements OR, the inputs of logic elements AND decoders are connected to the outputs of the triggers, and the outputs are with the corresponding inputs of logic elements IDNs and through a block of matching elements with inputs of a digital indicator, as well as logical elements NOT and keys 2.

The disadvantage of this pulse counter is its low speed.

The aim of the invention is to increase the speed of the counter.

The goal is achieved by the fact that in the pulse counter, there are triggers containing Lopic elements AND a decoder, a block of matching elements, a digital indicator and IDN logic elements, and the inputs of logic elements And the decoder are connected to the trigger outputs, and the outputs are connected to the corresponding inputs of OR logic elements and a block of matching elements - with inputs of a digital indicator; additional inputs of logic elements I. of the decoder are connected to the input bus, and outputs of logical elements OR - with inputs of tr ggerov.

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The drawing shows the electrical circuit of the proposed counter.

The proposed counter contains triggers 1-4, logic gates AND 5-14, which are part of

0 decoder 15, logical elements OR 16-19, block 20 matching elements, 1 indicator 21.

The input signal is fed to the wired terminal 22, the drawing does not show the connection from the trigger outputs to the inputs of logic elements AND decoder 15. When a pulse is applied to the input bus 22, the signal is received only from the output of that logic element 5 5-14 of the decoder 15, which All diodes (not shown) are closed according to the code currently recorded in the meter. The signal from this logical element I arrives at the corresponding inputs of the flip-flops 1-4 directly or through the logical elements OR 16-19 and | pulses of positive polarity transfers the counter to the next state. For example, if the counter is in zero

state, when a pulse arrives at the input bus 22, the signal is wired at the output O of the logic element AND 5 of the decoder 15 and arrives at the input of the corresponding logic element OR 16 from the output of which a positive polarity will switch trigger 2 into one state. If the counter is in the state corresponding to the code of number 6, then the signal from the output of the AND 11 logic unit will cause the trigger 4 to be in the zero state, and through the corresponding logical element OR 17 the trigger 2 will switch to the one state.

an indicator, characterized in that, in order to increase speed, additional inputs of logic elements And the decoder are connected to the input bus, and outputs of logical elements OR to the inputs of flip-flops.

Sources of information taken into account in the examination

1. Lerner MI and others. Digital display. M ,, Energie, 1970, p. 27.

2. USSR author's certificate N 381171, cl. H 03 K 23/24, 06.02.72. Further processes will take place in the same way.

Claims (1)

 The invention The pulse counter with digital indication, contains triggers, logical elements AND, decoder, block of matching elements, digital indicator and logical elements OR, and the inputs of logical elements AND decoder connected to the outputs of the trigger, and the outputs - with the corresponding inputs of logical elements OR and via a block of cleaving elements - with digital inputs