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  2. File:Program memory layout.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Program_memory_layout.pdf

    Original file (425 × 1,087 pixels, file size: 24 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  3. Memory management (operating systems) - Wikipedia

    en.wikipedia.org/wiki/Memory_management...

    Paged allocation divides the computer's primary memory into fixed-size units called page frames, and the program's virtual address space into pages of the same size. The hardware memory management unit maps pages to frames. The physical memory can be allocated on a page basis while the address space appears contiguous.

  4. Computer memory - Wikipedia

    en.wikipedia.org/wiki/Computer_memory

    Computer memory stores information, such as data and programs, for immediate use in the computer. [2] The term memory is often synonymous with the terms RAM, main memory, or primary storage. Archaic synonyms for main memory include core (for magnetic core memory) and store. [3]

  5. Memory management unit - Wikipedia

    en.wikipedia.org/wiki/Memory_management_unit

    The upper address bits are the virtual page numbers. [3] Most MMUs use an in-memory table of items called a page table, containing one page table entry (PTE) per virtual page, to map virtual page numbers to physical page numbers in main memory. Multi-level page tables are often used to reduce the size of the page table.

  6. Computer data storage - Wikipedia

    en.wikipedia.org/wiki/Computer_data_storage

    1 GiB of SDRAM mounted in a computer.An example of primary storage. 15 GB PATA hard disk drive (HDD) from 1999. When connected to a computer it serves as secondary storage. 160 GB SDLT tape cartridge, an example of off-line storage.

  7. Computer number format - Wikipedia

    en.wikipedia.org/wiki/Computer_number_format

    The number of bits needed for the precision and range desired must be chosen to store the fractional and integer parts of a number. For instance, using a 32-bit format, 16 bits may be used for the integer and 16 for the fraction. The eight's bit is followed by the four's bit, then the two's bit, then the one's bit.

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  9. Memory cell (computing) - Wikipedia

    en.wikipedia.org/wiki/Memory_cell_(computing)

    The memory cell is the fundamental building block of computer memory. The memory cell is an electronic circuit that stores one bit of binary information and it must be set to store a logic 1 ( high voltage level) and reset to store a logic 0 (low voltage level).