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7 Cards in this Set
- Front
- Back
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What does program counter do |
Holds memory address of instruction in each cycle |
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What does accumulator do? |
Stores intermediate results of calculations in the ALU |
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What does the Memory address register do? |
Holds memory address about to be used by CPU. The address may point to data or CPU instruction |
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What does the Memory data register do? |
Holds actual data/instruction. This may have been fetched from memory or waiting to be written to memory |
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What is utility software? |
Used to configure/maintain/help a computer run |
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Define a WAN |
Collection of LAN'S in different geographical locations |
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What's virtual memory and why may it be needed? |
Memory used when there isn't enough room on RAM, and is allocated on an area on secondary storage to be used as RAM |
