CPU Flashcards
What does CPU stand for?
Central Processing Unit
Is the CPU split into different parts?
Yes
Name the parts the CPU is split into
Control Unit, ALU, Register, RAM and ROM
What does the Control Unit do?
Manages execution of programs
What does ALU stand for?
Arithmetic Logic Unit
What does ALU do?
Performs operations like mathematical work.
What does Registers do?
temporarily store items of data
What does RAM stand for?
Random-Acess Memory
what does RAM do?
Used to store data temporarily which can be read and written but it will lose its content once the power is switched off
What does ROM stand for?
Read-Only-Memory
What does ROM do?
Used to store data permanently which are important to the system and can only be read not written to.
(Operating System)
What is “Buses” in computing terms
Is a set of wires used to carry data between the processor and main memory.
Identify the different buses
- Address Bus
- Data Bus
- Control Bus
Describe the Address Bus
It is used to specify which memory location is to be used to read or write data to
Describe the Data Bus
This carries data from a memory location to the processor
Describe the Control Bus
It is used to send out signals to initiate events such as write and read.
What is an Interface?
An interface provides a link between a peripheral device and the CPU identifies the differences in how they operate
Is there a difference in speed between Peripheral devices and the processor?
Yes because Peripheral devices operate at a much slower speed than the processor.
(Like I mentioned the CPU identifies the differences in how they operate)
What is “Data Storage”
During the compensation the data may be needed into a memory location called the buffer until the peripheral data is ready to be transfer.
What is meant by “Data Conversion”
Data is often stored in peripheral devices in a different format from how it is stored in the processor.
