CPU & LMC

Front

What is the main function of the CPU?

Back

To carry out the fetch-decode-execute cycle.

Front

What are the two main parts of a program instruction?

Back

Opcode and Operand

Front

What happens during the fetch stage?

Back

The CPU fetches data and instructions from main memory and stores them in its own registers.

Front

What is the purpose of the CPU's registers?

Back

They are used to temporarily store data and instructions.

Front

What is the purpose of the Program Counter (PC) register?

Back

This is used to store the memory address of the next instruction.

Front

What is the purpose of the Memory Address Register (MAR)?

Back

This holds the instruction to be carried out by the CPU.

Front

What is the purpose of Memory Data Register (MDR)?

Back

This holds the location of where the data will be loaded from or stored.

Front

What does the accumulator register do?

Back

This stores data that is being used by the CPU (for example in calculations)

Front

Which factors could affect the performance of the CPU? Options: The physical size of the CPU., The clock speed, number of cores and cache size, How heavy the CPU is., How many fans the CPU has

Back

The clock speed, number of cores and cache size

Front

What does the following numeric code represent in LMC: 901

Back

Input