SU421991A1 - - Google Patents

Description

one

The device relates to the field of computing technology.

Devices are known that contain a binary counter, but built on triggers, connected to a hibernation unit, which is based on I and delay elements.

The purpose of the invention is to increase the accuracy of the calculation results.

This is achieved by the fact that in the device to the output of the low-order trigger of each decade of the binary-decimal counter through the delay element and the element of the transfer unit and the key inputs of two doiolite1 1x d) delay lemeites, the output of one of which is connected to zero trigger input the younger bit is the non-soul of the decade counter, and the output of the other is with the zero input of the third trigger of the same decade.

In the drawing, the iredation and the heartbeat and the next decade of the device, where / is the (previous) decade; 2-g-fl (and subsequent) decade; , 3-binary-ten counter, 4 - non-transfer unit; 5 - shaper; 6-day reset; 7 10 - counter triggers 3; i - 14 - delay elements of the non-transfer unit 4; 15 - 18 - elements “And block 4; 19 is a common delay element; 20, 21 - additional delay elements; 22 - element "I.

The device works as follows.

The trigger input is 7 of the previous decade and the impulses of frequency f (emuls and sequentially divisible) stand.

Pulses from a source of frequency / 2 (emulsions of a divider sequence) are fed to the input of the transfer unit. The impulses of frequency jz are added to the input of driver 5, the output of which is connected to the inputs of all the flip-flops. The impulse produced by the former causes the reset of the flip-flops, as a result of which they are returned to their initial position (state "On the right output). At the moment of returning the flip-flops, with the exit state like "1", a voltage drop appears on the left output of their initial output, which affects the delay elements 11-14. The inputs of these elements are connected to single outputs of the triggers, and their outputs to one of the inputs of the “I / 5-18. The second inputs of these elements "And connected to the output of the common element 19 of the delay, the input of which receives the frequency emulsions / 2. The outputs of the elements "And, related to the corresponding triggers, are connected to the zero inputs of the triggers of the lower bits, for example, the output of the element" And 18 is connected to

the zero input of the trigger 9, etc. The output of the element “And 15 points to the elements 20 and 21 of the delay, the output of one of which is connected to the zero input of the trigger 7. The inputs of the elements 20 and 21 of the delay are connected to the output of the elements“ And 15 of the next decade. Delay elements 20 and 21 allow the writing of the number 5 in the corresponding decade.

Thus, in the intervals between frequency pulses / 2 in the meter, information is accumulated. With the arrival of the frequency pulses / 2, all the triggers are reset by the pulses delayed by the reset time, taken from the outputs of the elements I. Triggers are translated into one state by dividing the accumulated information in half. These operations are performed cyclically and invented and

A device for calculating the frequency ratio, containing a binary-decimal counter, performed on triggers, connected by a transfer unit, performed on delay elements and “AND elements, characterized in that, in order to improve the accuracy of the calculation results, in the device to the trigger output Yes, for each subsequent decade of the binary-decimal counter through the delay element and the element “And the transfer unit and the switches, there are two additional delay elements, the output of one of which is connected to the zero input of the trigger ml The second decade of the previous decade is of the previous decade, and the exit of the other is with the bullet entrance of the third discharge trigger of the same decade.