SU579690A1 - Tertiary computing device - Google Patents

Description

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Ezbrete above relates to computational and pulse technique, can be used in particular, for the construction of counting circuits by means of three and al control electronic keys.5

The ternary counting devices used in computing and pulse technology, built on the elements AND-NOT (or OR-NOT) l are known.

However, these devices are complex. .ten

It is also known a ternary counting device on potential NAND logical gates, containing three installation asynchronous K $ triggers, to inputs R (3 of the first and third of which are connected, respectively, the first and second three-input elements of AND-N, the first inputs of which are connected to outputs Q of the third and the first trigger, respectively, the second input of the first three-input element AND-NOT is connected to the input bus of the counting element, and the second input of the second element - to the input Sd of the first trigger. the same three-input elements AND-NOT - Z.

This device is tricky.

The aim of the invention is to simplify the design of the device.

This goal is achieved by the fact that in the ternary counting device, containing four two-input and three-input O-ND elements, three asynchronous R flip-flops, the first and second three-input elements of the First and Second three-input elements are connected to the inputs Yab of the first and second the inputs of which are connected to the outputs C of the third and first flip-flops, respectively, the second input of the first three-input I-NO element is connected to the input busbar, and the second input of the second three-input I-NE input to the Sd input of the first KS trigger, input and output Q of the first t The igger is connected via the first dvuhvhotsovy element AND-NOT to the input 5 of the second RS of the trigger, the input Rd and the output Q of which through the second two-input element AND-NOT are connected to the input Sd of the third RS trigger and the first input of the third gruhuhvhoda element H-i1E, the output of which is connected to Sd input of the first RS trigger, and the second one 3

KI- rVDtiuoy ifinne and to the first jump of the fourth anyxrixoiioBoro element I-HF, the second hopping of which is connected to the output Q track f ГQ RSi Tpvirrfjpn, and BE) move with hop

Rd of the RS-TDHiTepa, the outputs of Q and Q are closely connected to the third inputs of the second S-111 second element; accordingly.

The drawing shows a diagram of a three-piece counting device on the elements (1-NOT, however, OR-NOT elements can also be used.

The ternary counting device contains an input unit 1u, three acHxpoHHbixRS-triggers: the first on the elements AND-NOT 2 and 3, the second on the elements AND-NO 4 and 5 and the third on the elements AND-NOT 6 and 7, four control two-code elements -4-1E 8-11 and control three-input control inputs AND-NO 12 and 13.

The device works as follows. Before applying positive pulses to the input bus 1, the RS-triggers are in the following states: the first trigger (AND-HE elements 2 and 3) is in Inn 1 (1 at the output of element 2, output Q and O at output of element 3 is output Q), the second trigger (elements AND-NOT 4 and 5) is in state 1 (1 at the output of element 4 is output Q and O at the output of element 5 is output Q), and the third (at elements 6 and 7) - in the state O (O is not the output of element 6 - output Q and 1 at the output of element 7 - output Q).

This state of the ternary counting element is briefly described by the number 011, the numbers indicate the states (third, second, and first triggers). In this state, at the outputs of the elements AND-NE 3-11 and the output of the first three-input element AND-NOT 12 there are high voltage levels, and at the output of the second three-input element. AND-NOT-13-LOW.

At the instant tj of the occurrence of the first input pulse, the inputs of the AND-HE elements 8 and 11 are exposed to all high voltage levels. Low potentials are set at the outputs of these elements. After a low potential has been formed at the output of the NANDI element 11, the element 5 generates a high signal at its output. The signal at the output of the AND element - NOT 1O does not change, since the formation of a low signal at the output of the NAND 11 element precedes the formation of a high signal at the output of the NAND 5. After the low potential is formed at the output of element 5, both inputs of the element 4 okaa1 ,, vlyupkh: high levels of voltage, and nn (Cho 11 output forms 17 (), Ik-crif

In addition (or after the low voltage level of the Elseirra 8 output depends on the response times of the elements), a high voltage level develops at the output of the element 13 — Thus, the ternary counting device goes to the OO1 state. There will be no other changes in the output signals of the elements of the ternary even device until t, the end of the first pulse.

At time t i, unit voltages are formed at the outputs of elements 8-11. After the appearance of a single signal at the output of element 11, both potentials of the element Yu appear to have high potentials, which leads to a zero voltage at its output, which in turn causes the appearance of a single level at the output of element 6, then at the output of element 7 low potential is formed. No other changes are made to the output signals of the elements of the three-word calculating device at time t. Thus, after the end of the first input pulse, the counting element enters the 1O1 state.

After the appearance of the second input pulse (MOMeHTtj), all the inputs of the element 12 appear to have high voltage levels, and a low signal is generated at its output, which causes an excessive signal at the output of the element 3. Then a zero signal is generated at the output of the element 2. Thus the device went into the 10O state, after which the potentials at the outputs of all elements do not change at the end of the second pulse (instant fc) when a single signal is formed at the output of element 12. Thereafter, a low potential is formed in the cell 9, which in turn causes a high voltage to appear at the output of the element 4. A zero signal appears at the output of the element 5, which causes a high voltage to form at the output of the element 10. Other changes in the signals at time t does not occur, after the termination of the second pulse, the ternary counting device enters state 110.

With the appearance of the third pulse (t c), the output of element 8 is a low level, which sets a high signal at the output of element 2. After this), at the output of element 3, a zero level is formed, which converts the output of element O. into one unit with the position of the output O. IVi, in the ternary counting device, the contents of .11.1, and the other.h change -.- and AI are not ironic : g () t1,

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