System Architecture Flashcards
1
Q
what does the control unit do?
A
decodes instructions, controls timing of operations
2
Q
what does the arithmetic logic unit do?
A
performs arithmetic and logic operations
3
Q
what does the PC (Program Counter) do?
A
holds the address of the next instruction to be fetched
4
Q
what does the MAR (Memory Address Register) do?
A
holds the address of where data is to be fetched
5
Q
what does the MDR (Memory Data Register) do?
A
stores data that has been fetched from the RAM
6
Q
what does the Accumulator do?
A
stores the result of the calculations performed by the ALU
7
Q
what is the definition of embedded systems
A
a computer system built into a larger device
8
Q
what is the definition of the cache?
A
fast memory in the CPU that stores frequently used data
