Post on 05-Jan-2016
transcript
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