Lesson 1: Computer Concepts – Part 1. Computer Systems Personal Computers Network server Desktop...

Lesson 1: Computer Concepts – Part 1

Computer Systems

Personal ComputersNetwork server

Desktop

Laptop

Desktop Computer Components

System UnitHouses the Central

Processing Unit (CPU)

PeripheralsThese are hardware items that are outside the system unit box, such as the keyboard, mouse, monitor, and printer.

Units of Measure

Bits/Bytes

Megahertz Resolution

Inside the System UnitPart 1

A System Board

PCI expansion slots

ISA expansion slots

AGP video slot Microprocessor slot

RAM modules plug in here

Hard drive connections

Floppy drive connection

The Microprocessor

A computer on a single silicon chip

Microprocessor Performance Clock speed Design Benchmarks

Performance/Cost trade-offs

Random Access Memory Your computer’s “workbench”

Also called Volatile Memory Locations of RAM

Main memory Cache Video

Cache RAM

Special, high-speed RAM to make the computer process faster

How much RAM do you need?Enough to run your application programs efficiently.

Disk Drives

Drive Types: Hard drive Floppy drive CD Zip drive DVD

How Disk Drives Work

RAM Compared to disk drivesWorkbench memory – Storage memory

Lesson 1: Computer Concepts – Part 1