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Hardware
The physical components of a computer system.
Examples: Motherboard, DVD Burner, RAM CPU, and etc.
Software
Computer programs; instructions that make hardware work.
Example: Microsoft PowerPoint, Adobe Acrobat, AppleWorks
Question: Is an Operating System software?
Keyboard
A hardware unit with a set of switches that resembles a typewriter keyboard and that conveys information from a user to a computer or data communications circuit.
Mouse
A common pointing device. The basic features of a mouse are a flat-bottomed casing designed to be gripped by one hand, one or more buttons on the top, a multidirectional detection device
Monitor-Liquid Crystal Display (LCD)
• an electronic display that consists of segments of a liquid crystal whose color varies according to the voltage applied to them
Case
• Houses the hardware• Creates good air flow to keep hardware cool• Creates a mounting point for hardware• Protects hardware from outside interference
Power Supply
Converts 120volts AC into– 12 volts DC
• Runs Fan, DVD rom, CD rom, hard drive, Motherboard
– 5 volts DC• Mouse
– 3.3 volts DC• Runs the RAM
Backbone of the Computer System
Motherboard Central Processing Unit (CPU)
– CPU FAN and Heat Sink
Random Access Memory (RAM)
Motherboard
The Motherboard allows all the components in the computer system to interact with one another
This Hardware component is the brain of the computer system– The CPU device that interprets and
executes instructions
The CPU produces as much heat as a 100 watt light bulb
Central Processing Unit (CPU)
CPU Fan with Heat sink
Used to Pull the heat away from the CPU and keeping the CPU temperatureat 95 Fahrenheit
Random Access Memory (RAM) Also Known as MEMORY-PC Allows for information to be written to and
read instantly You DO NOT want to buy the cheapest brand
– Three Good Brands
• Kingston • PONY• Samsung
Video Card
Connected to the AGP slot on the motherboard
Designed to generate output for the system's video display screen
Network adaptor
Connected to a PCI slot on the motherboard Allows you to access the internet Can transfer 10/100mbps of data
USB Flash Drive
• Storage device that is inserted into a computers USB port
• Data is stored in flash memory • Data is stored and read electronically
DVD burner
• Stores up to 4.5 gigabytes of data on DVD media
• Uses a laser to burn an image onto DVD or CD
• One DVD =7CDs• One CD =447 3.5 Floppy disks
Hard Drive (EIDE)
The faster the Hard Drive spins the faster you will be able to access the Data stored on it
7200rpms is a speed to look for
Operating System
The purpose of an operating system is:– to organize and control hardware and software
so that the device it runs on, ßbehaves in a flexible but predictable way.
Graphical User Interface (GUI)– GUIs display visual elements such as icons and
windows
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