Online Mind Mapping and Brainstorming

Create your own awesome maps

Online Mind Mapping and Brainstorming

Even on the go

with our free apps for iPhone, iPad and Android

Get Started

Already have an account? Log In

The Components of the System Unit by Mind Map: The Components of the
System Unit
0.0 stars - reviews range from 0 to 5

The Components of the System Unit

The System Unit

The inside of the system unit on a desktop personal computer includes.

Drive bay(s)

Power supply

Sound card

Video card




Also called the central processing unit (CPU), interprets and carries out the basic instructions that operate a computer.

A processor chip generates heat that could cause the chip to burn up

Require additional cooling, Heat sinks, Liquid cooling technology

Data Representation

ASCII (American Standard Code for Information Interchange) is the most widely used coding scheme to represent data.

The binary system uses two unique digits (0 and 1) Bits or Bytes, Analog, Digital


The system unit contains two type of memory

Volatile memory, Loses its contents when power is turned off, Example includes

Nonvolatile memory, Doesn't lose contents when power is removed, Examples includes ROM, flash memory, and CMOS

Three basic types of RAM chips exist

Dynamic RAM (DRAM)

Static RAM (SRAM)

Magnetoresistive RAM (MRAM)

Expansion Slot and Adapter Cards

An expansion slot is a socket on the motherboard that can hold an adapter card

An adapter card enhances functions of component of the system unit and/or provides connections to peripherals

Sound Card

Video Card

Removable flash memory includes

Memory cards

USB Flash drives

PC Cards / ExpressCard modules

Port and Connectors

A port is the point at which a peripheral attaches to or communicates with a system unit

Firewire port

Bluetooth port

SCSI port

eSATA port

IrDA port

Serial port

MIDI port

A connector joins a cable to a port

A USB port


A bus allows the various devices both inside and attached to the system unit to communicate with each other

PCI bus

PCI Express bus

Accelerated Graphics Port

USB and FireWire bus

PC Card bus


A bay is an poening inside the system unit in which you can install

A drive bay typically holds disk drives

Putting it All Together


Intel Core 2 Duo or Intel Celeron Dual Core or AMD Semepron

Minimum Ram : 2 GB

Small Office / Home Office

Intel Core 2 Quad or Intel Core 2 Extreme or AMD Athlon FX or AMD Athlon X2 Dual-Code

Minimum Ram : 4 GB


Intel Core 2 Extreme or AMD Turion X2

Minimum Ram : 2 GB


Intel Itanium 2 or AMD Quad Core Opteron or Intel Quad Core Xeon or Sun UltraSPARC T2

Minimum Ram : 8 GB


Intel Core 2 Quad or Intel Core 2 Extreme or AMD Athlon FX or AMD Athlon X2 Dual-Core

Minimum Ram : 4 GB

Power Supply

The power supply converts the wall outlet AC power into DC power

Some external peripherals have an AC adapter, which is an external power supply

Keeping Your Computer or Mobile Device Clean

Clean your computer or mobile device once or twice a year

Turn off and unplug your computer or mobile device before cleaning it

Use compressed air to blow away dust

Use an antistatic wipe to clean the exterior of the case and a cleaning solution and soft cloth to clean the screen