SU478363A1 - Shift register - Google Patents

Description

The invention relates to computing and can be used in digital computers. A shift register is known that contains in each bit a symmetric trigger whose outputs are connected to the outputs of a pulse key with the memorization of a control signal, the control input of which is connected to the output of the trigger of the previous discharge. The purpose of the invention is to improve the performance characteristics of the register, in particular, to expand the tolerances for the duration of the trigger pulse front. This is achieved by the fact that each bit of the shift register holds the OR element, whose inputs are connected to the outputs of the pulse key, the output to the switching input of the pulse of the previous bit, the switching input of the key of the last bit is connected to the shift bus. The drawing shows the scheme shift register. Each bit of the shift register contains a trigger 1 with a separate start pulse key 2 with memorization of the control signal and a logic circuit OR 3. In the initial state, any binary code can be written in the shift register trigger. If unit 1 is recorded in trigger 1, then a high voltage level is output at output 4, and a low voltage level is present at control input 5 of key 2, then the pulse received at input 6 of key 2 is outputted at 7 of key 2. At high the voltage level at the control input 5 of the key 2; the switching of the pulse applied to the input 6 of the switch 2 is performed at the output 8 of the switch 2. The change of the signal at the control input 5 of the switch 2 during the action of the pulse at the input of switching 6 does not affect the switch . To shift the right code / written in the shift register triggers, a pulse (or voltage level) should be applied to the AND input of the circuit. Impulse:

| can be of any shape, for example, sinusoidal, and of any duration. The main requirement for a pulse is that its amplitude must exceed the trigger threshold 10 at input 9.g

The pulse applied to the input 9 is switched to one of the outputs of the key 10 depending on the state of the trigger 11, while the trigger 12 switches to the same state as the trigger | 0 ger 11. The pulse from one of the outputs of the key 10 through the circuit OR 13 is fed to the input 6 of the key 2, commutes to one of the outputs (7 or 8) and switches the trigger 11 in total, defined by 15 trigger 1. The pulse from input 9 passes up to the outputs of the last key

14 and performs trigger switching

15 of the first bit to zero state. Thus, the code written in the trigger 20

Herah, shifts one bit to the right.

In the shift control register keys 14, 2 and 1O is carried out from the flip-flops 15, 1 and 11 of the previous bits,.-And the gamer from the outputs of the keys 14, 2 and 1O 26

Triggers 1, 11, and 12 of the following bits of El 1: this is not necessary: it is necessary to delay the signal when transmitting information from one bit to another.

Subject invention

A shift register containing a symmetrically trigger whose inputs are connected to the outputs of a pulse key with a control signal memorized: the control input of which is connected to you-i (SHOW of the previous bit, characterized by operational characteristics of the register, it contains in each bit an OR element, whose inputs are connected to the outputs of an impulse switch, the output to the switching input of a pulse wave and a personal discharge signal, the switching input of the key of a low power switch is connected to the a different shift.