IT Flashcards
What does CPU stand for
Central Processing unit
What does ALU stand for
arithmetic logic unit
a computer system built into another device, it only has ONE purpose
Embedded System
What is the purpose of Cache
Stores frequently used data and instructions
What does MDR stand for
Memory Data Register
What does MAR stand for
Memory Address Register
How many cycles would a 1 GHZ single core processor perform per second?
1 billion
What does the Program Counter do?
Stores the address of the next instruction
What does CU stand for
Control unit
What does the CU do?
Decodes and directs instructions to be carried out
What is the CPU’s purpose
Fetch, Decode and Execute instructions
What does the MAR do?
Stores the address of the memory location to access
What does the MDR do?
Stores the data retrieved from memory
What does the Accumulator do?
Stores the results of arithmetic and logical operations
What does the ALU do?
Performs Arithmetic and Logical operations
Where are instructions and data stored during the FDE cycle?
In main memory
What is meant by ‘Clock Speed’?
The number of operations per second a CPU can perform
What is meant by a multi-core processor?
A single CPU with multiple core components
