SU377877A1 - ALL-UNION - Google Patents

Description

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The invention relates to computing.

In the well-known memory devices on thin magnetic films, due to closely spaced elements between the digit and number lines, at the moment of recording and counting, large capacitive disturbances occur, which are superimposed by the Hia signal read from the film. To reduce this interference, electrostatic shields are used which are placed between the arrays of the device. However, the use of electrostatic screens reduces the speed of the device, its device, which is associated with a signal delay in the discharge line and is due to an increase in the distributed capacitance between the discharge wire and ground compared to a similar storage device without electrostatic screens.

In addition, transformers in numerical and discharge circuits, as well as complex balanced reading amplifier circuits, are applied to suppress noise. This greatly complicates storage devices, since a large number of transformers is needed, equal to the number of numbers or bits.

The purpose of the invention is to increase the reliability of the memory of its device in operation. This is achieved in that the device

A transformer and a forming chain were introduced, the input of which is connected to the output of the numerical pulse generator, and the output to the end of the secondary winding of the transformer. The beginning of the latter is connected to the end of the primary winding of the transformer and connected to the zero potential bus, and the beginning of the primary winding is connected to the electrostatic screen.

The drawing shows a diagram of the proposed device.

The device contains electronic keys 1, an electrostatic screen 2, a transformer forming a chain 4, a driver 5 numerical pulses and a decoder 6.

During the rise of the interrogation pulse and its decay in the screen, due to the shalichiyu capacitive coupling between the numerical line and the screen, an interference is induced, the current of which flows one of the windings Wi of the transformer to the ground. At this point in time, the chain 4, connected to the interferer, generates the same largest current, which flows through the other winding Wg of the transformer, only in the opposite direction. Thus, the magnetic fluxes of both windings compensate each other and the resistance of the screen-ground section for the noise current has a small value (not more than

0.5 ohm), i.e. practically the screen is connected to earth.

For a read signal, the conditions for passing current through a transformer are completely different. The current flows only along the winding Wi, and the screen-earth section has significant inductance (hundreds of ohms). Therefore, for practically a read signal, the screen is disconnected from the ground, the delay of signal propagation in the bit line is determined only by its parasitic parameters and has the same magnitude as in the case when there is no screen in the storing device.

Such inclusion of the transformer allows, while improving reliability, it is remembered; its devices in operation receive a signal delay equal to the signal delay in a similar storage device in which electrostatic screens are absent.

Subject to invention

Its memory device consists of an information accumulator with electrostatic screens connected to a zero potential bus, a decoder whose inputs are connected via electronic keys to a numerical pulse shaper, and the outputs to an information accumulator - its reliability in operation; a transformer and a forming chain, the input of which is connected to the output of the numerical pulse former, and the output to the end of the secondary

winding of the transformer, the beginning of which is connected to the end of the primary winding and connected to the bus of zero potential, and the beginning of the primary winding is connected to the electrostatic screen.

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