L6th - Systems Architecture (GCSE baseline)

What is the CPU’s purpose?

• To carry out program instructions

• To store data

• To compile program code

• To output data to the user

• I have no idea

What are the main characteristics of a Von Neumann CPU?

• Programs and data in shared memory

• Heat management through heatsinks and fans

• Communicating with input and output devices

• External and internal cache

• I have no idea

What is the difference between Harvard and Von Neumann?

• Harvard has separate stores for data and memory, VN does not

• Processing capacity; VN is faster

• VN has separate stores for data and memory, Harvard does not

• Processing capacity; Harvard is faster

• I have no idea

What does the MAR do?

• Stores the data retrieved from memory

• Stores the address of the memory location to access

• Stores the address of the next instruction

• Stores the results of arithmetic and logical operations

• I have no idea

What does the MDR do?

• Stores the data retrieved from memory

• Stores the address of the memory location to access

• Stores the address of the next instruction

• Stores the results of arithmetic and logical operations

• I have no idea

What does the Program Counter do?

• Stores the data retrieved from memory

• Stores the address of the memory location to access

• Stores the address of the next instruction

• Stores the results of arithmetic and logical operations

• I have no idea

What does the Accumulator do?

• Stores the data retrieved from memory

• Stores the address of the memory location to access

• Stores the address of the next instruction

• Stores the results of arithmetic and logical operations

• I have no idea

What does the ALU do?

• Performs Arithmetic and Logical operations

• Decodes and directs instructions to be carried out

• Stores frequently used data and instructions

• Processes graphical functions

• I have no idea

What does the Control Unit do?

• Performs Arithmetic and Logical operations

• Decodes and directs instructions to be carried out

• Stores frequently used data and instructions

• Processes graphical functions

• I have no idea

What is the purpose of Cache?

• Performs Arithmetic and Logical operations

• Decodes and directs instructions to be carried out

• Stores frequently used data and instructions

• Processes graphical functions

• I have no idea