What is AX register?
AX is the primary accumulator; it is used in input/output and most arithmetic instructions. For example, in multiplication operation, one operand is stored in EAX or AX or AL register according to the size of the operand. BX is known as the base register, as it could be used in indexed addressing.
What is destination operand?
If the result of an instruction is a temporary value, the destination operand is a pointer to the instruction where the value is used. Note that this is different than an instruction pointer in a source operand.
Which register is used to as an implicit operand or destination operand in case of arithmetic instructions and I O instructions?
Explanation: DX register is a general purpose register which may be used as an implicit operand or destination operand in case of a few instructions.
What are register operands?
Register operands refer to data stored in registers. The following examples show typical register operands: mov bx, 10 ; Load constant to BX add ax, bx ; Add BX to AX jmp di ; Jump to the address in DI. An offset stored in a base or index register often serves as a pointer into memory.
What is the use of indirect addressing?
One use of indirect addressing is to supply a way of circumventing short address field limitations since the first memory reference provides a full word of address size. Another use is as a pointer to a table.
What is problem with direct addressing and why?
Direct-address tables are impractical when the number of possible keys is large, or when it far exceeds the number of keys that are actually stored. Instead, we use hash tables. With hash tables, instead of storing the element with key k in slot k, we store it in slot h(k).
What is hashing with example?
Hashing is designed to solve the problem of needing to efficiently find or store an item in a collection. For example, if we have a list of 10,000 words of English and we want to check if a given word is in the list, it would be inefficient to successively compare the word with all 10,000 items until we find a match.
What is the advantage of hashing with chaining?
1) Simple to implement. 2) Hash table never fills up, we can always add more elements to the chain. 3) Less sensitive to the hash function or load factors. 4) It is mostly used when it is unknown how many and how frequently keys may be inserted or deleted.