SU796845A1 - Optronic decimal adder - Google Patents

Description

(54) OPTOELECTRON DECIMAL TUMPER

receiver, modulator, transfer pulse shaper, delay element and optoelectronic quantizing module whose optical input is connected to a light emitter 7 and optical output by a photoreceiver, respectively, the first electrical input is connected to the modulator output, the second is connected to the common power bus, the photodetector output is connected through the driver to the element, the delay, and the input of the modulator to the optical output of the light element 4.

The peculiarity of this adder is the use of an optoelectronic quantizing module in it, consisting of a set of regenerative optoelectronic elements whose main function is time quantization with a strictly defined step. The optoelectronic quantizing module is designed as a line of sequentially installed and optically coupled regenerative optron elements whose number is The number of stable states of the module. Due to the fact that the module consists of bistable EO optoelectronic elements with an S-shaped characteristic, it is possible to record and store information in it with simultaneous indication according to the positional principle. This makes it possible, after the termination of the signals of the corresponding digits of the last operand and the end of the transient processes for the purpose of through transfers, to record the result of the summation. To record a unit of information, a minimum sampling time is used in the form of the response time C of the optoelectronic element.

The disadvantage of this adder is that the execution time of the addition operation grows in proportion to the number of digits of the terms (with the addition of the discharge, the time increases by 9 G, where T. is the presentation time of the unit), since there are no end-to-end transfer chains.

In addition, the delay time of transfer units in each bit must be at least 8 ° C, since otherwise it is possible to overlap the units of transfer with the operand arriving at the input, which will lead to loss of information. There is also a high probability of spurious transfers to higher stages, since the photodetector is not controlled by the modulator and can pass the transfer signal, taking in optical information from the output of the optoelectronic quantizing module in the actual absence of a transfer unit.

The purpose of the invention is to increase the speed and reliability of the optoelectronic decimal adder.

The goal is achieved by the fact that an optoelectric electronic adder containing an input unit for the addends, the output of which is connected to the corresponding inputs of the discharge cells, each of which contains a light emitter, modulator, phototransducer, transfer pulse former, delay element and optoelectronic quantizing module, made in the form of serially installed and optically coupled regenerative optocouplers, the optical input of an optoelectronic quantizing module is connected to the first light emitter output, optical output transfer - with the first input of the photovoltaic converter, the first electrical input of the optoelectronic quantizing module is connected to the output of the modulator and the second input of the converter, the second electric input of the common power bus of the adder, the output of the photovoltaic converter is connected through the transfer needle former to the input of the delay element, and the input of the star modulator with the second output of the light emitter, two E elements, three elements OR and the element NOT, npji4eM the output of the first element OR are connected to the first inputs of the first and second elements. And, the outputs of which are, respectively, the first and second outputs of the discharge cell, the second input of the first element AND directly, and the second input of the second element And what. the cut element is NOT connected to the summing input of the bit cell, the first input of the first OR element is connected to the output of the delay element, the second input of the first OR element connected to the first input of the second OR element is the first input of the bit cell and is connected respectively to the first input of the previous one the bit cell, the second input of the second element OR is connected to the zero zero setting of the adder, the third input is connected to the output of the photovoltaic converter, and the output of the second element OR is connected to the third electric input of the opto the electronic quantizing module, the higher-order output of which, being the summing output of the discharge cell, is connected to the corresponding input of the previous discharge cell, the first input of the third element OR is connected to the input of the input components of the discharge cell, and the second input of the third element OR is the second the input of the bit. cell and is connected to the second output of the previous bit cell, and the output is connected to the input of the light emitter.

The drawing shows a functional diagram of an optoelectronic decimal adder.

Claims (2)

The adder contains bit-wise ones 1-3, an optoelectronic quantizing module 4, a light emitter 5, a modulator 6, an optical output transfer 7. optoelectronic quantizing module 4, photoconverter 8, first 9, second 10 and third 11 electrical inputs mrdul 4, shaper 12 pulses of transfer, element 13 delay the first element 14 OR, the first 15 and second 16 elements And, the output 17 of the highest bit (figures 9) optoelectronic module 4, element 18 NOT, bus 19 for setting zero adder, second element 20 OR, common bus 21 for power of adder, unit 22 for inputting the terms and third element 23 OR. The device works as follows. The working cycle of the proposed includes three cycles. During the first clock cycle, the first term is applied to the input. The signal from block 22 enters through the third element 23 OR to the light emitter 5, which is excited and acts on module 4 and modulator 6, which in turn generates a voltage of voltage and transfers it to input 9. module 4 to photoconverter 8. The number of optronic elements of module 4 excited during this time will correspond to the analog value of the first term. When it stops supplying the first analogue term, the light emitter 5 goes out, the ignition voltage is reduced by the modulator 6 to a fix voltage that is sufficient to maintain the level of the output light fluxes on the elements of module 4. During the second cycle, the second term is applied to the input. In this case, the remaining elements of module 4 are similarly excited. In the presence of an optical signal at the output 17 of module 4, which corresponds to the fact that the discharge line is overflowed, an electrical signal appears at the photo output The actuator only when simultaneously receiving from the modulator about the signal of the ignition voltage, which corresponds to the arrival of information at the input of module 4. The output electrical signal from the photovoltaic converter 8 goes through the second element 20 OR at the input 11 of module 4, has folded all the elements of module 4, and simultaneously enters to the input of the former 12 to form a pulse of duration C corresponding to a unit of transfer. During the third cycle, the transfer units are moved to the highest bit. If a transfer unit occurs in the second cell 2, then the signal goes to delay 13 for a duration of 8, then to the second input of the first OR 14, from which the signal goes to the inputs of elements 15 and 16 I. If summation in the lower cell 1 formed the transfer transfer and in the high cell 2, the signal at output 17 of module 4 was received by the first element 15 And transmits the transfer pulse to the next, higher cell 3 at the input P The first element 14 OR or through the second element 20 OR the cell 3 was zeroed. If the transfer signal was generated when summing up in the lower bit cell, for example cell 1, and the output 17 of the number 9 module 4 of the older bit cell 2 was not excited, the tag at the permissive signal at the output of element 18 is NOT; the impulse to transfer enters the third element 23 or OR to the light emitter 5 of the highest digit cell 2, which. creates a condition for the building of the corresponding output of the 4th bit cell 2. The advantages of the proposed optoelectronic decimal adder in comparison with the known ones is that the transfer unit signal comes directly only to the higher bit that is not yet filled, the summation time slightly depends on the number of digits of the components, increasing with the addition of each bit yes on the value of G. For example, the addition of the number 9999 with 1 is performed in the time T 9r + 8C + 4tr 2lT, which in this case is more than two times less than the execution time of the addition operation in the known device. Here term / e 41 - the delay time on the elements of end-to-end transfer. Since the delay of transfer units stacks during the time at which any addition cycle of two operands is executed (the maximum addition time of two operands without translations is 9 T), the possibility of distorting the results of the summation when the transfer unit and the unit of the second term coincide in time is excluded. The invention includes an optoelectronic decimal summatr containing a component for inputting the components, the output of which is connected to the corresponding inputs of the discharge cells, the cache of which contains a light emitter, a modulator, a phototransducer, a transfer pulse shaper, a delay element, and an optoelectronic quantizing module, made in the form of a line, installed and optically coupled regenerative optocouplers, the optical input of an optoelectronic quantizing module is connected to the first light emitter output, the optical output transfer - with the first input of the photovoltaic converter, the first electrical input of the optoelectronic quantizing module is connected to the output of the modulator and the second input of the photovoltage converter, the second electrical input - to the common power supply line of the adder, the output of the photovoltaic converter