[Grammar] to the next eight cells on its left

[Andy Lin]

Each eight-bit character transferred to the processor register is preceded by a shift of the previous character to the next eight cells on its left

I don't know how to interpret "to the next eight cells on its left", and what "to" means and "its" stands for?
Thanks helping out.

 

[Rover_KE]

Please note that I have changed your thread title.

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[GoesStation]

Suppose you have two sets of "cells" (which I assume to be single-bit locations):

XXXX XXXX 0101 1010

Before the operation, the processor register contains 0101 1010. After the operation, these two sets of cells look like this:

0101 1010 XXXX XXXX

The contents of the processor register have been shifted to the eight cells to its left.