SU556499A1 - Shift Register Memory Cell - Google Patents

Description

Works memory cell as follows.

The signal from the input is perceived by the memory cell as a command to enter the input information into trigger 1. After processing this command, the “Execution. If, for example, the state of the trigger 1 of the memory cell at the time of the arrival of the command “Recording to the control input of the memory cell” does not correspond to the value of the signal at the information input of this cell, then the state of the trigger 1 is changed by recording information into it.

The recording control signal is applied to the synchronization input of trigger 1, and is generated by the BANE element 5. After the trigger I switches, its state corresponds to the input information and the output of the EQUALITY element 2 generates an identity signal, which through the OR element 4 acts on the BANNER element 5, which in its the queue removes the write control signal from the trigger input of trigger 1. Element 2, element OR 4, Prohibit 5 and trigger 1 form a closed loop where element Equality 2 is with a feedback sensor on the execution, trigger 1 — the control object, and the prohibition element 5 serves to control the trigger.

If at the moment the “Entering state of flip-flop 1” command already corresponds to the input information, there is no need to switch flip-flop 1, for which an EQ signal of the OUTPUTbTB 2 signal that does not cause the trigger 1 to be triggered via the OR 4 element EQUALITY element 2 and the “Entry” command generates a “Execution” signal arriving at the memory cell output. The “Execution” signal means the end of operations in the memory cell and the establishment of a direct correspondence between the input information and the information contained in the memory cell. The connection of the output of the element AND 3 with its input through the element OR 4 is necessary for reliable operation of the cell in the shift register.

The signal "Execution from the output of the memory cell is fed to the control input of another

For us, the name is “Enter”. All processes in this memory cell will occur as described above in accordance with the situation. After

processing the command “Making another cell of memory at its output by means of a Vits signal” Execution that will go to the control input of the first memory location. The signal "Execution from the output of the first memory cell is output, which means the end of the process of shifting information in the register by one bit, writing to the first memory cell of a new bit of information, the absence of information failures during the shift, i.e. normal

operability of all register memory cells. The propagation time of the signal front is determined by the response time of the elements of the resulting chain, i.e., their speed is maximally used.

With the use of the limiting speed of the elements, the invention simplifies the shift register by reducing the number of cells by half, and increases the reliability by self-monitoring the performance of the register.

Claims (1)

Invention Formula The memory cell for the shift register containing the trigger, the single and zero outputs of which are connected to the outputs of the memory cell, whose information inputs are connected to the control inputs of the trigger, respectively, characterized in that, in order to increase the reliability of the memory cell, elements AND, OR, EQUITY and BAN, the first input of which is connected to one of the inputs of the element Both the output of the element OR, the second input of the element BANCH is connected to the clock input of the memory cell and the other input of the element AND whose output is connected to the clock output of the memory cell and to one of the inputs of the OR element, the other input of which is connected to the output of the EQUALITY element, one of the inputs of the EQUALITY element is connected to a single trigger output, one of the information inputs of which is connected to another input of the EQUIDITY element, and the clock input of the trigger is connected to the output of the BANNER element. P .J L.