SU828417A1 - Pulse counter with variable counting coefficient - Google Patents

Description

to the left of the input of the triggering trigger 6, and the output of the counter 4 is connected to a single input of the control trigger 6. The counting input of the trigger 6 is pulsed from the output of the counter /, and the output of the trigger 6 is connected to the second input of the counter OR 2. Control bus 7 is connected to the counting inputs in 4 and 5.

The device works in the following way. At the beginning of the input frequency of the device, the counter / selects. Each p + 1 I1mpu. / free to pass through the element OR 2 to the input of the counter 4. Simultaneously: m-eK | BUT number: tsIKlo, counts on p + 1 are counted by counters 3 and 5. After the KPC is counted 4, it highlights AND (Mpuls per unit "nichny input of trigger 6 with a duration equal to / period of the pulse from the output of the counter to pt p +. The next pulse from the output of the counter / ne converts counter 4 to the initial state and simultaneously triggers trigger 6 to the state "log. 1, for KPY1 those, the most element OR 2, and translates the counter / to the counting mode, on the p. Number of counting cycles per Calculate the volume by counters and 5 until they are filled. state "log. O, thus opening the element OR 2 and switching the counter / (In the counting mode on p + 1. ZATET1M PROCESS repeats IBHOBB.

The period of the next | V1V input is determined by the time required to prepare the control trigger for the arrival of the counting pulse from the output of the counter. And this time, in turn, is determined by su | MM.o. vrvMbni delay of the circuit OR 2 and the delay time of the counter 4 on L when the counter p p + is switched to the counting mode on p. And the same time is determined by the cM | MY delay time of the counting 5I and 5 and 5 by S and L when the counting of the accountant a p and p + is put into the counting mode i p + 1. Maximum of these

the sum of the delays, together with the delay time of the counter / per p and p + 1, determines the period of the trace. ESH of input pulses.

Total coefficient device counting is determined by setting the 1B / koy counters 4 and 5 to the required state using control region 7 and is defined as

/ (L (p + 1) + (B .N-A p B ..

When the conversion coefficient of the counter 5 on L is changed from To, the total conversion factor for consecutively connected counters 3 and 5 to B and N changes from B N t to B. To-from CC-res interval B. If the given code S Rappe Bp, then the control of the counter is determined by Shdom 5. When constructing such a device, it is necessary to observe condition c.

Claims (1)

Invention Formula A pulse counter with a variable counting coefficient, containing a programmable switch on / 4, a counter on B, the input of which is connected to the output of a counter on p and p + 1, a programmable counter on / V, an input of which is connected to the output of the counter on S and the control bus, which is connected to the control inputs of the software programs of the countable 1Cco1V on L and L, is due to the fact that, in order to increase speed, and to it, the OR element, the first input of which is connected to the output of the counter on p and p + 1, and the output on to the input of the programmer of the counter ma A, which directs the trigger p, whose counting input is connected to the output of the counter on p and p + 1, and the single and zero inputs are connected respectively to the outputs of the programmable counters on A and L, and the control output is connected to the second input of the OR element and the control input of the counter on r / k p + 1. The source of information received. In the examination: I. USSR author's certificate. Che 521659, that. H 03 K 21/36, 1976.