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19 Cards in this Set
- Front
- Back
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binary system
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a number system that has just 2 unique digits, 0 and 1 called bits
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bit
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the smallest unit of data the computer can process
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byte
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character. the basic storage unit in memory
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memory
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electronic components that store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data.
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volatile memory
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loses its contents when power is removed.
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nonvolatile memory
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does not lose its memory when power is removed.
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RAM memory
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random access memory or main memory. consists of memory chips that can be read from and written by the processor and other devices.
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ROM memory
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read only memory. memory chips storing permanent data and instructions
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memory module
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a small circuit board
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memory slot
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holds memory modules on the motherboard
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cache
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improves processing times. 2 types: memory cache and disk cache
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L 1 cache
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built directly in the processor chip, usually has a very small capacity
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L 2 cache
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slightly slower than L 1, but has larger capacity
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ROM
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read-only memory. refers to memory chips storing permanent data and instructions
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flash memory
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a type of nonvolatile memory that can be erased electronically and rewritten
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CMOS
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provides high speeds and consumes little power. uses battery power to retain information even when the power to the computer is off.
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access time
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the amount of time it takes the processor to read data, instructions and information from memory
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nanosecond
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one billionth of a second
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ASCII
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american standard code information interchange
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