Internal Hardware Flashcards
1
Q
Von Neumann structure
A
- computer gets command from input devices
- commands get processed by computer
- information may be stored or retrieved from storage devices
- computer shows final result on output devices
2
Q
3 processor components
A
- arithmetic logic unit
- control unit
- system clock
3
Q
where is the processor connected directly to
A
the main memory
4
Q
what does the alu do?
A
- all processing happens there
5
Q
explain what happens in the alu
A
- binary signals representing data are sent through logic gates which transforms them into result data
6
Q
what does the control unit do?
A
- it controls other parts of the processor
- sends controls in order
7
Q
explain what happens in the control unit
A
- signals the alu to read from main memory, process it and write it back into the main memory
- based on the system clock, it gives time before the next signal is sent
8
Q
what does the main memory do
A
it stores data by using many locations identified by addresses
9
Q
what is an address in the main memory?
A
a number that identifies a unique memory location
10
Q
what is stored in the main memory?
A
instructions for the cpu on how to handle data
11
Q
what are buses?
A
- a collection of wires for short connections between CPU components which are transmitting electrical signals
12
Q
3 types of buses
A
- address
- data
- control: control signals, orders for receiver
13
Q
what is the fetch-execution cycle?
A
the order of processing done by the CPU
14
Q
what is the CPU operation order?
A
- CU fetches binary instructions from main memory
- CU decodes the instruction
- ALU executes the instruction
15
Q
how does fetch work?
A
copying of an instruction binary number from the main memory into the instruction register on the CPU
