Doctor use case Diagram

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Scaled-Index Addressing

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Scaled-index addressing uses two 32-bit registers (a base register and an index register) to access the memory. The second register (index) is multiplied by a scaling factor. The scaling factor can be.A scaling factor of is implied and need not be included in the assembly language instruction (MOV AL,[ EBX+ECX ]). A scaling factor of is used to address word-sized memory arrays,a scaling factor of is used with double word-sized memory arrays,and a scaling factor of is used with quad word-sized memory arrays. An example instruction is MOV AX,[EDI+2*ECX]. This instruction uses a scaling factor of , which multiplies the contents of ECX by 2 before adding it to the EDI register to form the memory address. If ECX contains a 00000000H, word-sized memory element 0 is addressed; ifECX contains a 00000001H, word-sized memory element 1 is accessed, and so forth. This scalesthe index (ECX) by a factor of 2 for a word-sized memory array. The MOV EAX,[ 4*EDI ] is a scaled-index instruction that...
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Semantics of LTL

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A transition system M=(S,→,L) is a set of states S endowed with a transition relation → (a binary relation), such that every s ∈ S has some s’∈ S with s → s’, and a labeling function L: S →P(Atoms). Transition systems are also simply called models. a model has a collection of states S, a relation →,saying how the system can move from state to state, and, associated with each state s, one has the set of atomic propositions L(s)which are true at that particular state. L is that it is just an assignment of truth values to all the propositional atoms. A transition system has more than one state, so this assignment depends on which state s the system is in: L(s) contains all atoms which are true in state s. All the information about a (finite) transition system M always be figured by using directed graphs whose nodes (which we call states) contain all propositional atoms that are true in that state. For example, if our system has only three states s0, s1 and s2; if the only possible transit...
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