what is the difference between stack pointer and program counter in 8085?
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The main difference between stack pointer and program counter is that the stack pointer is a register that stores the address of the last program request in a stack while the program counter is a register that stores the address of the next instruction to be executed from the memory.
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void* memcpy( void* dest, const void* src,size_t count ); The memcpy() function takes three arguments: dest, src and count. This function when called, copies count bytes from the memory location pointed to by src to the memory location pointed to by dest.
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Answer: In an array, you have a list of elements and you can access any of them at any time. But in a stack, there's no random-access operation; there are only Push, Peek and Pop, all of which deal exclusively with the element on the top of the stack. A stack is data-structure which has a last in first out policy.
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Stack is a linear data structure which follows a particular order in which the operations are performed. The order may be LIFO(Last In First Out) or FILO(First In Last Out). Mainly the following three basic operations are performed in the stack: Push: Adds an item in the stack.
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The primary difference between the fork() and vfork() system call is that the child process created using fork has separate address space as that of the parent process. On the other hand, child process created using vfork has to share the address space of its parent process.
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Hi, Counter is the one which count (or) which tells you the no of events or occurrences. Accumulator holds the arithmetic and logical data inside the CPU. It can also called as register which stores the data temporarily.
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['Process Address Space. The process address space is the set of logical addresses that a process references in its code. ... ', 'Static vs Dynamic Loading. ... ', 'Static vs Dynamic Linking. ... ', 'Swapping. ... ', 'Memory Allocation. ... ', 'Fragmentation. ... ', 'Paging. ... ', 'Segmentation.']
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Static memory is allocated on stack, while dynamic memory is allocated on heap. Dynamic memory needs to be manually release after use, while static memory is released itself once the binding variable scope is over.
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Stacks in Python. ... A stack is a collection of objects that supports fast last-in, first-out (LIFO) semantics for inserts and deletes. Unlike lists or arrays, stacks typically don't allow for random access to the objects they contain. The insert and delete operations are also often called push and pop.
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KEY DIFFERENCE Stack variables can't be resized whereas Heap variables can be resized. Stack memory is allocated in a contiguous block whereas Heap memory is allocated in any random order. Stack doesn't require to de-allocate variables whereas in Heap de-allocation is needed.
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so i came to conclude that,threads maintain their own stack,and local variables are stored on the stack so it might impossible sharing of local variables in threads. The threads within a process share the same address space. A "variable" is a programming language concept. ... Threads can share absolutely all memory.
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Stack is used for static memory allocation and Heap for dynamic memory allocation, both stored in the computer's RAM . ... Variables allocated on the heap have their memory allocated at run time and accessing this memory is a bit slower, but the heap size is only limited by the size of virtual memory .
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The primary difference is that threads within the same process run in a shared memory space, while processes run in separate memory spaces. ... But, like process, a thread has its own program counter (PC), register set, and stack space.
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Key Differences Between Stack and Queue. Stack follows LIFO mechanism on the other hand Queue follows FIFO mechanism to add and remove elements. In a stack, the same end is used to insert and delete the elements. On the contrary, two different ends are used in the queue to insert and delete the elements.
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char* strncpy( char* dest, const char* src, size_t count ); The strncpy() function takes three arguments: dest, src and count. It copies a maximum of count characters from the string pointed to by src to the memory location pointed to by dest .
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The basic difference is that function is compiled and macro is preprocessed. When you use a function call it will be translated into ASM CALL with all these stack operations to pass parameters and return values. When you use a MACRO, C preprocessor will translate all strings using macro and then compile.
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All allocation made by malloc(), calloc() or realloc() are stored on the heap, while all local variables are stored on the stack. All global and static variables are stored in the data segment, while constants are stored in the code segment.