1.1.1 CPU Components and their function Flashcards
State the common components of the CPU
Arithmetic Logic Unit (ALU)
Control Unit (CU)
Cache
Registers
What is the acronym for the Arithmetic Logic Unit
Arithmetic Logic Unit (ALU)
What is the acronym for the Control Unit
Control Unit (CU)
State the purpose of the Arithmetic Logic Unit
The Arithmetic Logic Unit performs arithmetic calculations and logical decisions
State the purpose of the Control Unit
The Control Unit sends signals to control how data moves around the CPU
State the purpose of Cache + an adv. of using it
To store instructions that is frequently used by the CPU
adv. Data does not need to be fetched from the RAM which speeds up access
What is a register
A register is a tiny, super fast piece of onboard memory inside the CPU each with a very specific purpose.
State the names of the four registers included in Von Neumann Architecture
Accumulator
Memory Address Register (MAR)
Program Counter (PC)
Memory Data Register (MDR)
What is the acronym for the Memory Address Register
Memory Address Register (MAR)
What is the acronym for the Program Counter
Program Counter (PC)
What is the acronym for the Memory Data Register
Memory Data Register (MDR)
Explain how cache memory is used by the CPU (3 marks)
The cache is extremely fast memory in the CPU. It stores regularly used instructions. The CPU can access data stored in the cache much faster than retrieving it from Main Memory (RAM).
