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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    This allows for many radical things to be done syntactically within Python. A new method resolution order for multiple inheritance was also adopted with Python 2.3. It is also possible to run custom code while accessing or setting attributes, though the details of those techniques have evolved between Python versions.

  3. Data segment - Wikipedia

    en.wikipedia.org/wiki/Data_segment

    Each segment was placed at a specific location in memory by the software being executed and all instructions that operated on the data within those segments were performed relative to the start of that segment. This allowed a 16-bit address register, which would normally be able to access 64 KB of memory space, to access 1 MB of memory space.

  4. Unit Control Block - Wikipedia

    en.wikipedia.org/wiki/Unit_Control_Block

    In IBM mainframe operating systems OS/360 and its successors, a Unit Control Block (UCB) is a memory structure, or a control block, that describes any single input/output peripheral device (unit), or an exposure (alias), to the operating system.

  5. Memory barrier - Wikipedia

    en.wikipedia.org/wiki/Memory_barrier

    In computing, a memory barrier, also known as a membar, memory fence or fence instruction, is a type of barrier instruction that causes a central processing unit (CPU) or compiler to enforce an ordering constraint on memory operations issued before and after the barrier instruction. This typically means that operations issued prior to the ...

  6. Memory controller - Wikipedia

    en.wikipedia.org/wiki/Memory_controller

    A memory controller, also known as memory chip controller (MCC) or a memory controller unit (MCU), is a digital circuit that manages the flow of data going to and from a computer's main memory. [ 1 ] [ 2 ] When a memory controller is integrated into another chip, such as an integral part of a microprocessor , it is usually called an integrated ...

  7. Memory management - Wikipedia

    en.wikipedia.org/wiki/Memory_management

    Memory management (also dynamic memory management, dynamic storage allocation, or dynamic memory allocation) is a form of resource management applied to computer memory.The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when no longer needed.

  8. Coalescing (computer science) - Wikipedia

    en.wikipedia.org/wiki/Coalescing_(computer_science)

    In computer science, coalescing is a part of memory management in which two adjacent free blocks of computer memory are merged. When a program no longer requires certain blocks of memory, these blocks of memory can be freed. Without coalescing, these blocks of memory stay separate from each other in their original requested size, even if they ...

  9. Memory management unit - Wikipedia

    en.wikipedia.org/wiki/Memory_management_unit

    This style has the advantage of simplicity; the memory blocks are continuous and thus only the two values, base and limit, need to be stored. Each entry corresponds to a block of memory used by a single program, and the translation is invisible to the program, which sees main memory starting at address zero and extending to some fixed value. [4]