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The Components of the System Unit by Mind Map: The Components of the System Unit
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The Components of the System Unit

Objectives Overview

The System Unit

The system unit is a case that contains

The inside of the system unit on a desktop

The motherboard


The processor,also called the central processing unit [CPU]

The motherboard

The control unit

The arithmetic logic unit [ALU]

For every instruction

Most current personal computer support pipelining

The leading

Determine how you plan to use

Data Representation

Analog signals are continuous and vary in strength and quality

Digital signals are in one of two states : on or off


Access time

Flash memory

Read-only memory[ROM]


Memory cache

Expansion Slots and Adapter Cards

With Plug and Play,the computer automatically can configure

Removable flash memory includes

Ports and Connectors

A port replicator is an external device that provides connections to peripherals through ports built into the device

A docking station is an external device that attaches to a mobile computer or device

A Bluetooth wireless port

A smart phone might

Other types of ports include

A USB port can connect op to 127 different

On a notebook computer,the ports are on the back,front,and/or sidrs

A port is the point at which a peripheral

A connectoa joins a cable to a port


A bus

Word size

Expansion slots connect to expansion buses

Common types of expansion buses include


A drive day typically holds disk drives

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

Putting lt All Together


Small Office/Home Office




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


The Leopard with a Time Machine


Components of the system unit

How memory stores data,instructions,and information

Sequence of operations that occur when a computer executes an instruction

Comparison of various personal computer processors on the market today

How to clean the exterior and interior of a system unit