DE3135105A1 - Electronic counter in 1-of-10 code - Google Patents

Abstract

In this electronic modulus-10 counter, the resetting of the relevant flip flop is also preselected by its own counting output as in the electronic counter according to the main patent application (P 3047169). This electronic counter also consists of simple flip flops which are combined with delay circuits like the electronic counter according to P 3128764.6. <IMAGE>

Description

Electronic counter in 1-out-of-10 code

The invention is to improve the electronic Counter according to the main patent application, the type A of which is only used for counting upwards and its type B is only suitable for counting backwards and its type C suitable for counting up and down. Improving this electronic According to the invention, the counter consists in that each counting flip-flop has a delay circuit was combined so that one counting pulse does not result in two counting flip-flopps or multiple counting flip-flops can flip into their one position and in this way deliver an incorrect counting result. If from the outputs (counting outputs) the Flip-flops can only be controlled by transistors or only diodes by AND circuits are controlled in the blocking direction, may suffice as delay circuits Resistances (ohmic resistances), also with corresponding combined controls. Otherwise, other L-H potential change delay circuits are used or delay circuits that delay both potential changes or mono-flopps.

A decade of the forward counting circuit is incomplete in FIG shown and in Figure 2, also incomplete, a decade of the down counting circuit. In FIG. 3, a decade of the up-down counting circuit is shown incompletely and in FIG. 4 the same decade in a different form of representation 0 In FIGS. 3 and 4 s are shown as delay circuits mono-flopps One decade of the modulo 10 up counting circuit (Figure 1) consists of 10 flip-flopps 1 to 10 and 10 delay circuits 11 up to 20 and 20 flip-flop input = and circuits 21 to 40 and a carry-and circuit 41 and the associated newspapers. The counting outputs are marked with the letters A to K and the associated numerical values. The counter.

The pulse input has the designation Z and the decade carry output the designation U. The total reset of the flip-flopps 1 to 9 to H-potential at the right-sided exit and the flip-flop 10 at H potential at the left-sided The output takes place via a minus current pulse at input 5.

The way this up counter works, consisting of a number Decades according to FIG. 1 result as follows: After the total reset has taken place, is the flip-flopp 1 is pre-controlled on the left-hand side via the line e, whereby the flip-flop 1 flips to its left position when the first counting pulse arrives, in which its left-hand output has H potential and output A displays the number 1. The flip-flop 2 is thus pre-controlled on the left-hand side via the line f and the flip-flop 1 via line g on the right-hand side, whereby the second counting pulse the flip-flop 2 in its left position and the flip-flop 1 in its right position tilts.

This means that the output B has H potential and shows the number 2. The flip-flop 3 is thus pre-controlled on the left-hand side via the line h and the flip-flop 2 on the right-hand side via line i, which results in the third counting pulse the flip-flop 3 in its left position and the flip-flop 2 in its right position and the output C shows the number 3. After the fourth count pulse at the input In this way, the output D shows the number 4 and after the fifth counting pulse output E is the number 5. After the sixth counting pulse at input Z, shows this way the output F is the number 6 and after the seventh counting pulse the output G is the number 7. After the eighth counting pulse, the output shows H in this way the number 8 on and after the ninth counting pulse the output 1 the number 9. This means the decade-carry-AND-circuit 41 is pre-activated, whereby the tenth Counting pulse from the output of the AND circuit 41 a carry pulse to the next decade goes off and the flip-flop 10 tilts into its left position. This shows the exit K indicates the number O (zero) and is therefore reset to zero for the current decade and the count increased by the number 1 over the next decade.

There is one decade of the modulo 10 down counting circuit (Figure 2) also from 10 flip-flopps 1 to 10 and 10 delay circuits 11 to 20 and 20 flip-flop input AND circuits 21 to 40 and a transfer AND circuit 41 and the associated lines 0 The counting outputs are also marked with the letters A to K; and the associated numerical values. The count input also has the designation Z and the decade carry output the designation U. The total reset the flip-flopps 1 to 9 of all decades at H-potential at the right-hand exit and the flip-flopps 10 of all decades at H potential at the left-hand exit also takes place with a minus current pulse at input S.

How this down counter works, consisting of a number Decades according to Figure 2 result as follows: After the total reset of all For decades the flip-flop 9 is pre-controlled on the left-hand side and the flip-flop 10 right-sided, because the flip-flop 10 at its counting output (left-sided output) Has H potential. In addition, from the output of this flip-flop 10 (via the delay circuit 20) the decade carry is also pre-activated, which means that when the first Downward counting pulsesz at the input Z from the output of the AND circuit 41 a carry pulse goes to the next decade and the flip-flop 10 flips into its right position and the flip-flop 9 flips into its left position. This means that the output B has H potential and thus shows the number 9 and thus became the counter reading of the present Decade increased from zero to 9 and the count of the next decade by the digit 1 lowered. The flip-flop 9 is right-sided and the flip-flop 8 is line-sided controlled in advance, whereby the flip-flop 9 in his Right position and the flip-flop 8 tilts into its left position and thus the Output H displays the number 8. With the third downward counting pulse, this flips over Put the flip-flop 7 in its left position and the flip-flop 8 in its right position and the output G shows the digit 7O When the fourth downward counting pulse tilts in this way the flip-flop 6 in its left position and the flip-flop 7 in its right-hand position and shows the exit F to number 6. In this way, the flip-flop 5 flips into his at the fifth downward counting pulse Left position and the flip flop 6 in its right position and shows the exit E attaches the number 5. With the sixth downward counting pulse, this flips over in this way Flip-flop 4 in its left-hand position and the flip-flop 5 in its right-hand position and output D shows the number 4. With the seventh downward counting pulse, it tilts in this way the flip-flop 3 in its left position and the flip-flop 4 in its right position and output C shows the number 3. At the eighth downward counting pulse In this way, the flip-flop 2 flips into its left position and the flip-flop 3 in its right position and output B shows the number 2. At the ninth In this way, the downward counting pulse flips the flip-flop 1 into its left position and the flip-flop 2 in its right position and the output A times the @iffer 1 at.

With the tenth downward counting pulse, the flip-flop 10 is on the left side and the flip-flopp 1 is pre-controlled on the right side, whereby this tenth Backward counting pulse flips the flip-flop 10 to its left position and the flip-flop 1 tilts to its right-hand position and output K thus displays the number O.

One decade of the modulo 10 up-down counting circuit A (Figure 3) consists of 10 flip-flopps 1 to 10 and 10 mono-flopps 11 to 20 and 10 flip-flop input circuits 21 to 30, each consisting of an OR circuit and 3 AND circuits each. This decade consists of the AND circuits in other parts 31 and 32 and the forward carry-AND circuit 33 and the reverse carry-AND circuit 34 and the OR circuit 35 and the associated lines. The counting, input has the designation Z and the decade carry output the designation U. This is also the case Decade the total reset line @ e is shown. This total provision the flip-flopps 1 to 9 of all decades at H-potential at the right-sided ~ exit and the flip-flopps 10 of all decades at H potential at the left-hand exit also takes place with a minus current pulse at input S.

(Line e only has L potential for the duration of the reset pulses).

How this up-down counter works when counting up is the same as how the up counter works when counting up. Accordingly the mode of operation of this up-down counter is the same when counting down, like how the down counter works when counting down. The setting up counting is done by applying H potential to control line V, so that the control line R has L potential via a negation circuit. The setting downward counting is done by applying L potential to the control line V, which means that the control line R has H potential via a negation circuit.

When counting up, the pulse line a is pre-activated and when counting down, the pulse line b. Also is when counting up the decade transfer and circuit 33 is pre-activated by the line f. Accordingly is the decade-carry-AND circuit 34 from the line g when counting down before driven.

For the modulo 10 up-down counting circuit version B are instead of mono-flopps 11 to 20 other delay circuits are arranged0 In FIG. 5 is the embodiment B of the decade of the up counting circuit shown in FIG shown, which has mono-flopps instead of ordinary delay circuits, like the up-down counting circuit according to FIGS. 3 and 4.

The illustrated counting circuits can therefore optionally with normal Delay circuits can be provided or with special mono-flopps, as in Figure 6 shown. In this FIG. 6, the decade shown in FIG. 5 is the up-counting circuit shown in component symbols.

In Figure 7 there is a decade of such an up-counting circuit shown, which has only 9 flip-flopps. The decades of this electronic one Counters are either provided with normal B-H2 delay circuits or others suitable delay circuits or with special iono-flopps as shown in the figure 6th

According to the principle shown and described, there are not only modulo 10 counters can be produced, but also electronic counters (counting circuits) with other numbers of modules.

Rni version 2 of these electronic meters are different place the diodes 81/82 capacitors @ and the line t is not connected to the operating current supply line, but to the neutral line. In this case, the flip-flop input circuits have an AND input and a dynamic OR input.

l e r s e i t e

Claims (5)

Patent claims 1) Electronic 'up-counter, consisting of flip-flopps, which in the counting direction the next flip-flop one-pre-drive and zero-pre-drive itself and which in each decade a count-flip- And consists of one or two or more decades, characterized in that a delay circuit is arranged at the counting output of the flip-flop. 2) Electronic @ backward counter, consisting of flip-flopps, which in the counting direction drive the next flip-flopp one-up and advance themselves to zero, and which has a count-flip-flop per digit in every decade and consists of one, two or more decades, characterized in that a delay circuit is arranged at the counter output of the flip ->'lopps. 3) Electronic forward-backward counter consisting of flip-flopps, the next flip-flopp by appropriate pre-control in the counting direction Driving one-ahead and driving yourself zero-ahead and that in every decade pro Digit has a counting flip flop and from one or two or more decades consists, characterized in that at the counting output of the Elipp-Flopps each have a delay circuit is arranged. 4) Electronic up counters or backward counters or up / down counters nach.Anspruch 1 or 2 or 3, characterized in that the special executions these electronic counters or their decades for the digit O (zero) are not counting flip flops have and that the digit O (zero) of the decades from a negated OR circuit is shown. 5) Other electronic meters according to claim 1 or 2 or 3 or 4, characterized in that these are not modulo 1O counters, but Counter with other module numbers or module numbers.