IG1 Glossary - U3a Computer Architecture and Storage

a temporary general-purpose register that stores numerical values at any part of a given operation

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累加器

an output device that converts electrical energy into mechanical movement

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执行器

a device that converts analogue data (for example, data read from sensors) into a form understood by a computer

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模拟数字转换器

a label for a memory location used by the CPU to track data

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地址

the system bus that carries the addresses throughout the computer system

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地址总线

the component of the CPU that carries out all arithmetic and logical operations

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算术逻辑单元

a secondary storage device (such as an HDD or SSD) used to store data permanently even when the computer is powered down

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后备存储

can travel in both directions; used to describe data that can travel in both directions

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双向

temporary memory that uses static RAM to hold data/instructions frequently used by the CPU, thereby increasing CPU performance. More generally, cache means any area of storage used to quickly access frequently used data. Other examples include web cache, database cache and DNS cache

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缓存

responsible for the execution or processing of all the instructions and data in a computer

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中央处理单元