SU824314A1 - Device for testing storage matrix elements - Google Patents

Description

(54) DEVICE FOR CONTROL OF ELEMENTS OF MEMORABLE MATRIX

f

This invention relates to memory devices.

Devices are known for monitoring elements of the storage matrix, comprising control signal drivers, decoders, counters, and a comparison circuit i}.

The disadvantage of this device is high hardware costs. The closest technical solution to the present invention is a device for monitoring the elements of the storage matrix, containing simulators for entering the number of addresses and code numbers, the start-up circuit, schemes for generating address code and code numbers, comparison circuits and counters.

This device is designed to control the elements of the ferrite storage matrix 2j.

However, this device is complex and does not provide sufficient accuracy for controlling the elements of the storage matrix if the latter is made of amorphous semiconductors, since the control circuit of such a matrix and the methods for controlling its elements are significantly different from those for the ferrite storage matrix.

The purpose of the invention is to simplify the device and improve the accuracy of control.

The goal is achieved in that the device for monitoring the elements of the storage matrix containing groups of keys, decoders, first, second and third counters, pulse generator, first pulse shaper, matching unit, reading and fault detection unit, element I, and one of the inputs the keys of the first group are connected respectively to the outputs of the first decoder and the unit, matching, one of the outputs of the keys of the first group are one of the (outputs of the device and inputs of the device, outputs of the keys of the second the groups are other outputs of the device, the other outputs of the keys of the first group are connected to the inputs of the readout and fault detection unit, the output of the first pulse shaper is connected to the input of the matching unit, the output of which is connected to one of the inputs of the readout and non-fault detection unit, the inputs of the keys of the second group are connected to the outputs of the second descrambler., the inputs of the first and second deshfratora connected respectively to the output of the second counter, respectively, and one of the outputs of the third counter, the other the output of which is connected to the input of the second counter, the fourth counter, the first and second triggers, the second pulse shaper are input, the output of the pulse generator is connected to the input of the second pulse shaper, one of the outputs of which is connected to the input of the first pulse shaper and the second trigger input, the other to the first input of the element I, the second input of which is connected to the output of the readout and fault detection unit's house, and the output to the input of the first counter, the output of the second trigger is connected to the input quarter th counter, the output of which is connected to the input of the third counter, the first counter output coupled to an input of the first flip-flop, kotoroto output is connected to the input of the pulse generator. .

The drawing shows a block diagram of a device for controlling elements of a storage matrix made of amorphous semiconductors.

The device contains a power supply unit 1, a matching unit 2, a first 3 and a second 4 pulse shapers, a pulse generator 5, a first trigger b, a first counter 7 for counting the number of cycles, element 8, a reading and fault detection unit 9, a control unit 10 typewriter, typewriter 11. The inputs and outputs of the device are connected to the outputs and inputs of a controlled storage matrix 12 of amorphous semiconductors. The device also contains the first group of keys 13, the first decoder 14, the second counter 15, the second group of keys 16, the second decoder 17, the third counter 18, the second trigger 19, the display unit 20, the fourth counter 21 serving to count the number of references to the storage matrix element 12 with his training.

The output of the generator 5 is connected to the input of the imager 4, one of the outputs of which is connected to the input of the imager 3 and the input of the trigger 19, the other. - to the first input element And 8, the second input of which is connected. with the output of block 9, and the output with the input of the counter 7. The output of the trigger 19 is connected to the input of the counter 21, the output of which is connected to the input of the counter 18. The output of the counter 7 is connected to the input of the trigger 6, the output of which is connected to the input of the generator 5. The device operates as follows in a way.

Using the keys 13 and 16, the decryption of the chambers 14 and 17, the counters 15 and 18, the controlled element is selected

matrix 12. The coordinates of the selected element are induced by block 20, made in the form of a line of LEDs. Depending on the verification mode, the necessary control signals are given. Signals. From the output of the imaging unit 3, through block 2, keys 13, 16 and the selected element of the matrix 12, write, erase and read pulses are received.

The read information from the output of the block 9 enters the block 10 of the control of the typewriter 11 and to the input of the element 8, which sets the control cycles or stops the device.

After the selected element of the matrix is trained, the K-multiple switch set by the meter 21, the counter 21 carries the pulse and the next element of the matrix 12 is selected.

The device has the following modes of operation:

a g auto mode Record sequential switching of all matrix elements from high impedance state (Off) to low impedance (Enabled);

b. automatic mode Erase - sequential switching of all matrix elements from low impedance (Enabled) to high impedance (Disabled);

v. automatic mode T yellow code - alternating recording modes

and Erasing on all elements of the matrix in a checkerboard pattern;

Automatic mode Reading and printing - sequential reading and printing of the state of matrix elements;

The manual mode Write, Erase and Read performs these operations on one element of the matrix;

e. automatic or manual mode. Training - K-multiple switching of all elements of a matrix or a given element of a matrix.

The device provides control modes Record, Erase. If any element of the matrix 12, despite the supply of the corresponding pulse, does not switch to the input of the element And 8, a pulse is applied, which starts the counter 7 and the latter automatically repeats the switching pulse n times. If the element does not switch after that, the device stops, and the coordinates of the element are displayed on the LED bar 20. The driver 3 has an adjustment of the amplitude of the switching pulse. This is due to the fact that the initial breakdown of the matrix elements of amorphous semiconductors requires a slightly higher voltage than their subsequent switchings.

Claims (1)

Claim' A device for monitoring the elements of the storage matrix, containing groups of keys, decoders, first, second and third counters, a pulse generator, a first pulse shaper, a matching unit, a reading and fault detection unit, an And element, one of the key inputs of the first group being connected respectively to the outputs of the first decryptor and the block, matching, one of the outputs of the keys of the first group are some of the outputs of the device and the inputs of the device, the outputs of the keys of the second group are other outputs of the device two other outputs of the keys of the first group are connected to the inputs of the reader and fault detection unit, the output of the first pulse shaper is connected to the input of the matching unit, the output of which is connected to one of the inputs of the reader and fault detection unit, the inputs of the keys of the second group are connected to the outputs of the second decoder, inputs the first and second decoders are connected respectively to the output of the second counter and one of the outputs of the third counter, the other output of which is connected to the input of the second counter, Furthermore, in order to simplify the Device and increase the accuracy of control, it contains a fourth counter, first and second triggers, a second pulse shaper, and the output of the pulse generator is connected to the input of the second pulse shaper, one of the outputs of which is connected to the input of the first pulse former and the input of the second trigger, the other to the first input of the And element, the second input of which is connected to the output of the reading and fault detection unit, and the * output is to the input of the first counter, the output of the second trigger connected to the input of the fourth counter, the output of which is connected to the input of the third counter, the output of the first counter is connected to the input of the first trigger, the output of which is connected to the input of the pulse generator ..