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The offset in computer assembly language is defined as: the distance between the actual address of the storage unit and the segment address of its segment is called intra segment offset, also known as "effective address or offset"
"offset is an analytical method of manual encryption, and the clearing and cash dispenser who has not changed the default offset will not be able to obtain the unlock password on the ATM; Each banknote dispenser gets 4 groups of passwords with 2 digits in each group
therefore, the offset must correspond to 4 groups, which can be set to any value except all zeros, and 4 groups of offsets cannot be set to the same number. There are two ways to calculate the offset: addition and subtraction
extended data
offset attribute:
offsetHeight: the space occupied by the element in the vertical direction; Equivalent to border Top + padding
Top + height + padding bottom + border bottom
offset width: the space occupied by the element in the horizontal direction; Equivalent to bottom left + padding left + width + padding right + border + right
offsetleft: the pixel distance between the left outer border of the element and the left inner border of the containing element
offsettop: the pixel distance between the upper outer border of the element and the upper inner border of the containing element
among them, the offsetleft and offsettop attributes are related to the containing element, and the reference of the containing element is saved in the offsetparent attribute
however, his address line is composed of two parts, one is called segment address, the other is called offset, which is similar to the unit building address, which can be called unit address, and then a certain number of households
the superposition of the two forms an address. The algorithm is that the segment address takes up 20-4 bits, the offset takes up 16-0 bits, and then add them up.