Fetches and decodes instructions. then it executes them.
1 of 11
What does MDR stand for. What does it do?
Memory Data Register (MDR) - Stores the location in memory to be used by the MDR. Holds the address of where data is to be fetched or stored.
2 of 11
What does MAR stand for. What does it do?
Memory Address Register (MAR) - Holds the data fetched from, or to be written to the memory.
3 of 11
What does PC stand for. What does it do?
Program Counter (PC) - Holds the address of the next instruction.
4 of 11
What does ALU stand for. What does it do?
Accumulator (ACC) - Holds the results of calculations.
5 of 11
One of the CPU's components is called the Arithmetic Logic Unit. What is the purpose of this unit?
This component performs calculations, e.g. addition/subtraction and logical decisions, e.g. does this equal…?
6 of 11
One of the CPU's components is called the Control unit. What is the purpose of this unit?
This component decodes instructions and sends signals to control how data moves around the CPU.
7 of 11
One of the CPU's components is called the Cache. What is the purpose of this unit?
This memory provides fast access to frequently used instructions and data without having to go to the main memory (RAM).
8 of 11
What does the clock speed do?
Measured in hertz, the clock speed is the number of cycles per second. It’s the number of instructions that you can fetch in a given amount of time. It has an internal clock and is controls by the CP. The bigger the system the most you can process.
9 of 11
What does the cache do?
It is a temporary storage space for fetched instructions so a copy can be made when it is sent to the main memory. When the computer is shut down the cache is cleared.
10 of 11
What does the number of cores do?
The number of cores affect the performance of the CPU because cores fetch and decode the instructions. So when more cores are added it would increase the speed meaning a more faster computer system
11 of 11
Other cards in this set
Card 2
Front
Memory Data Register (MDR) - Stores the location in memory to be used by the MDR. Holds the address of where data is to be fetched or stored.
Back
What does MDR stand for. What does it do?
Card 3
Front
Memory Address Register (MAR) - Holds the data fetched from, or to be written to the memory.
Back
Card 4
Front
Program Counter (PC) - Holds the address of the next instruction.
Back
Card 5
Front
Accumulator (ACC) - Holds the results of calculations.
Comments
Report