Byte sets {word, data}| can hold values or instructions. Word length can be constant, for more speed. Word length can be variable, for more flexibility and memory space. Words can have extra bits {tag bit} {word tag} to indicate data, code, control instruction, descriptor, date, or read-only. Words can have extra bits {correction bit} for error correction. Error-checking codes correct one-bit errors automatically and flag two-bit errors for automatic repeat.
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3-Computer Science-Software-Data Hierarchy
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Date Modified: 2022.0224