Introduction to high and low in memory addresses and registers

We can assume thatThe memory table is a piece of paper. When I enter aData at the time,Software will open up a memory for usAddress, where the data is stored in the memory table, as this is where the data is written to this address: 0040339C.
Our understanding of the high and low memory tables can be done here is a blank sheet of paper. We take each space as a position, starting from the 0~1000 count, written in the front is the low, for example, write four numbers, from 0~3. The low-to-high level of the game data is from G to E.

After that, we take the data from the memory table and put it in the register, we can compare the register to a bucket, and when we put the data, we must pour the "water" first to the bottom of the water cylinder.
If we take the game from memory and put it in a bucket, the data stored in the bucket will be emag, which is 4D 41 47 (note that each byte is a two 16-binary character)
And the bucket of high and position, presumably everyone will understand, the top of the bucket is high, bucket bottom is low, so emag data is e~g (E is the highest bit G is the lowest bit)


In this way, everyone is clear about the high and low principle (low in D means, high in g)
D G G D
If the memory address data 01 02 03 04 is placed in the register is 04 03 02 01
G D D G
If you put the Register data 04 03 02 01 to the memory address of 01 02 03 04

Data transmission, is to follow the high and low principle, I believe you follow this idea to understand, will be more simple ~ ~

Introduction to high and low in memory addresses and registers