11291494
Description
Mind Map by Declan Fletcher, updated more than 1 year ago
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Created by Declan Fletcher
over 6 years ago
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system architecture
- what effects a computer?
- things that effect
include, core the more
the better, MGz, Ghz.
for every core you add
you times the GHz by
that amount
- other thind that affect it is
the clock speed, the ammout
of RAM, cache, motherboard
and cores
- things that effect
include, core the more
the better, MGz, Ghz.
for every core you add
you times the GHz by
that amount
- In computer engineering, computer
architecture is a set of rules and
methods that describe the functionality,
organization, and implementation of
computer systems. Some definitions of
architecture define it as describing the
capabilities and programming model of a
computer but not a particular
implementation
- definitions
- Cache is a small amount of
memory which is a part of the
CPU - closer to the CPU than
RAM
- The CPU control unit automatically checks
cache for instructions before requesting data
from RAM. This saves fetching the instructions
and data repeatedly from RAM – a relatively
slow process which might otherwise keep the
CPU waiting
- The purpose of the CPU
is to fetch, decode and
execute instructions
- The purpose of the CPU
is to fetch, decode and
execute instructions
- The CPU control unit automatically checks
cache for instructions before requesting data
from RAM. This saves fetching the instructions
and data repeatedly from RAM – a relatively
slow process which might otherwise keep the
CPU waiting
- The motherboard is a circuit
board that connects the CPU
to the memory and all the
other hardware. The CPU sits
on the motherboard
- Buses are circuits on the motherboard that
connect the CPU to other components. There are
many buses on the motherboard. A bus moves
instructions and data around the system. The
speed of a bus is measured in megahertz (MHz).
The faster the bus, the faster data is
communicated. The speed of the motherboard is
defined by the bus speed.
- Buses are circuits on the motherboard that
connect the CPU to other components. There are
many buses on the motherboard. A bus moves
instructions and data around the system. The
speed of a bus is measured in megahertz (MHz).
The faster the bus, the faster data is
communicated. The speed of the motherboard is
defined by the bus speed.
- Memory is the area where the computer
stores or remembers data. Memory
provides the CPU with its instructions.
There are different types of memory, and
each one plays an important role in the
running of a computer system. Memory is
sometimes called primary memory.
- Memory is either volatile or non-volatile.
Volatile memory only stores information to run
programs while the computer is on. It is reset
and emptied once the computer is turned off.
Volatile memory requires electricity to store
data using transistors and capacitors.
- Memory is either volatile or non-volatile.
Volatile memory only stores information to run
programs while the computer is on. It is reset
and emptied once the computer is turned off.
Volatile memory requires electricity to store
data using transistors and capacitors.
- RAM is the main place for storing
instructions and data whilst a program
is being executed. It is also called main
memory. Program data is copied into
RAM before the CPU can run the
program.
- RAM is usually measured
in gigabytes. The more
gigabytes of RAM a
computer has, the more
programs and operations
it can handle at the same
time.
- RAM is usually measured
in gigabytes. The more
gigabytes of RAM a
computer has, the more
programs and operations
it can handle at the same
time.
- clock spped measn you
can execute more
instructions per second
- Cache is a small amount of
memory which is a part of the
CPU - closer to the CPU than
RAM
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