Operating Systems, Utilities, and Networks Lesson 1 What Makes Your Computer Go

Objectives Identify the various types of computer Systems Know your hardware components Understand operating Systems Work with utility Programs

Multiuser Computers and professional Workstations Obj: Identify the Various Types of Computer Systems Multiuser computers are used in a large company or government office. –Mainframes –Supercomputers –Minicomputers –Professional workstations

Multiuser Computers and professional Workstations Mainframe Obj: Identify the Various Types of Computer Systems Housed in climate-controlled rooms Personal computers/terminals hook-up to mainframes. Second fastest computer Expensive: –100,000’s/1,000,000’s Uses: –Government agencies –Car rentals –Medium sized businesses

Multiuser Computers and professional Workstations Supercomputers Obj: Identify the Various Types of Computer Systems Specialized mainframe with more processing power and speed Trillions of calculations per second Solves complex problems Fastest computer Used for design –Research lab, large government agency, automobiles, aircraft, spacecraft; to forecast the weather, military weapon and defense system

Multiuser Computers and professional Workstations Minicomputer Obj: Identify the Various Types of Computer Systems Used for small to medium sized businesses Fast computer but not as fast as the supercomputer and mainframe –Schools –Single-office companies –Less than 100 users –Less than $100,000

Multiuser Computers and professional Workstations Professional Workstation Obj: Identify the Various Types of Computer Systems More powerful than personal computer Single user workstation Slowest of the powerful computers Used by –Scientists – graphic designers –financial analysts –Architects Cost –In the thousands

Question 1. Mainframe are normally housed in special __________ room 2. A _____processes trillions of calculations per second 3. Which computer is the (mainframe, professional workstation, supercomputer, minicomputer) Fastest ________, faster_______, fast____ Slowest ________

Personal Computers Obj: Identify the Various Types of Computer Systems Explosion in the use of PC in the late 1980’s and early 1900’s Two types –IBM PC and its compatibles –Apple computers High-powered PC’s are used for CAD (computer-aided design) and CAM (computer-aided manufacturing Low-powered PC’s are used for terminals Majority run productivity software, Internet, and ENIAC first patented computer – used by the military 1943

Personal Computers IBM and compatible PC Obj: Identify the Various Types of Computer Systems First IBM in 1981 IBMs widely used in office settings Other companies created IBM clones –IBM and compatibles use Windows Most components bought from other companies Personal computers make it possible for people to use applications not only at work but at home, at school, while traveling—almost anywhere in the world.

Personal Computers Apple Computers Obj: Identify the Various Types of Computer Systems Steve Wozniak and Steve Jobs created Apple 1 in 1976 Most components built within the business Apple II computers were sold to homes and offices before the IBM pc’s User-friendly and graphics oriented computers Examples of Apple computer are –iMac, eMac, Power Mac, iBook, and PowerBook –Apple computers use Macintosh Apple II

Questions _______ was the manufacturer of the computer of choice in the 1980’s _______ is another name for an IBM- compatible computer Most components of the early IBM computers were manufactured on company owned facilities _______ (true, false)

Know Your Hardware Components System Unit : the case Motherboard: computer circuit board CPU: responsible for performing al of the arithmetic and logical instructions

Know Your Hardware Components Read-Only memory (ROM): instructions with built in data – memory retained when power is off Random Access Memory (RAM): store data only temporarily

Know Your Hardware Components Expansion slots: connects that let you install expansion boards

Input devices Keyboard Mouse Trackball Pointing Stick Touchpad Touch screen Graphics tablet Scanner Digital camera

Output devices Monitor Printer Speakers or headphones Plotter Projection unit

Storage Devices primary storage device (c drive) –Hard drive: Secondary storage device –Floppy disk –Zip cartridge –CD-Rom –DVD-Rom –CD-R disc –CD-RW –Flash drive