Flashcards
1.1 system architecture
Cards in this deck (10)
- 1what does the Central processing unit (CPU) do?*fetches instructions
*its an embedded system - 2what does the PC (Program Counter) do ?it holds the address of the next instruction
- 3what does the accumulator (ACC) do?it holds the results of calculations.
- 4what does the Memory Data Register (MDR) do?holds the data fetched from, or to be written to the memory.
- 5what does the (MAR) memory address data do ?*stores the location in memory to be used by the MDR.
*Holds the address of where data s to be fetched or store. - 6what does the ALU do?This Component performs calculations.
- 7what does the CU do?it decodes the instructions and sends signals to control how data moves around the CPU.
- 8What does the clock speed do?A number of times an instruction can be processed in a second.
- 9embedded system?a small computer with an specific function embedded into a larger mechanical or electrical system.
OR ACCEPT
- a controller with a function specific within a larger mechanical or electrical system. - 10example of embedded systems.-microwave
-washing machine
-car wipers
-DVDs
-GPS
-calculator
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- GCSE Computer Science Flashcards on 1.1 system architecture, created by shanice B on 12/09/2019.
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- shanice B
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