The document discusses different types of computer systems. It describes supercomputers as the largest type used for complex tasks like simulations. Mainframes are less powerful than supercomputers and are used by large organizations. Mini computers fall between mainframes and microcomputers. Microcomputers are generally personal computers that use x86 architecture and Windows. Other computer types discussed include laptops, netbooks, servers, PDAs, and embedded systems in devices like cars and planes. The document also covers computing environments like home, business, and networking.

1. COMPUTER SYSTEMS
Types Of Computers

2. SUPERCOMPUTERS
 Largest type of Computer system
 Greater Processing power
 Used for complex Tasks
 Weather Focusing , Quantum Physics , Simulations
 Columbia supercomputer , Titan (Linux Based)

3. MAINFRAME
 Single Processor Computer (Large)
 Processing power less than the supercomputer
 Operates 24/7 365 without interruption
 Repairs done through operations
 Massive throughput ( Out put devices)
 Government , Census processing Large corporate
data processing , DSS , Colleges , Hospitals

4. Mainframe
 Found in large organizations
 Costs Less than supercomputer
 Mostly produced by IBM
 IBM System / 360-91 produced in 1967
 Single processor
 zEnterprise System ( Around $75 000)

5. MINI COMPUTERS
 Medium range Systems ( between mainframe and
Micros)
 Mostly servers
 Built by sun-micro systems
 Linux Based

6. MICRO COMPUTERS
 Luanched 1981
 Mostly based on the x86 archtecture
 Generally called P.C’s
 Generally , Windows O.S
 Application software

7. LAPTOP COMPUTERS
 Single cased computer
 Portable
 X86 architecture but now mostly coming as 64 bits
 Generally using windows O.S

8. Netbook Computers
 Small laptops
 Easily portable
 >/Limited processing power , Memory , No CD Drive
 Longer battery life
 SO IS THE SIZE THE DIFFRENCE BTWN
LAPTOPS AND NETBOOK COMPUTERS?

9. OTHER COMPUTER TYPES
 SERVER
 Multiple CPU’s , More Memory , File sharing , Web
Hosting
 PDA
Small , pocket fit , Touch screen
PDA VS Smart phone
Camera , MP3 , Touch ,

10. EMBEDDED SYSTEMS
 Computers built into other devices
 Cars
 Factory machinery
 Smart T.V’s
 Planes

11. CHAPTER 2 Environments, Functions
Of Components , Health And Safety
 Scope And Coverage
 Computing Environments
 Von-Neuman Architecture
 Health and safety practices
 Processor examples , Machine cycle
 CPU
 Single Vs Multi-core
 Multi-processor
 Distributed
 //RISC VS CISC

12. Computers In Different Environments
 Computers at home
 Computers at work

13. Home Computing
 Affordable computers (late 1970’s  early 1980’s)
 Apple 11
 Atari ST
 Most used for simple games
 Simple word processing , and spreadsheet
 Music sequencing

14. Modern Home Computer Systems
 Application software
 Internet access
 Mostly run on the Windows Environment
 Home VS office systems
 Graphics editing / Design
 Domestic finances

15. Game Consoles
 Originated 1967
 General purpose computer
 Created for playing games
 limited functionality
 Better graphics card / power and gaming
performance
 Contain controllers , graphics resolution ,
 Internet connectivity , adhoc ,
 Dominated by the home market
 Examples , Xbox , PS , PSP

16. PS VS Xbox
 What's your preference ?
Network Gaming
Motion Controls
Wireless Controller
CD , DVD drive
Contain a hard
drive
PS is cheaper

17. Nintendo Wii
 Oldest game
 No hard disk , flash memory supports memory cards
 More Infor @ www.nintendo.com/wii

18. Computing And Business
 Supply of business needs
 Application software
 Mainframes  servers
 Processing customer information

19. Networking
 Most computers have network connection
 Sharing resources
 Sharing information
 Help in communication
 Internet connection , Emails , Chart
A computer without an internet
connection is a dead computer
THUPA JNR

20. Network Classification
 Networks Classified by size and scope
 WAN , MAN , PAN ,LAN

21. LAN
 Local area network
 One organization
 Devices physical close
 Run by a single organization
 Mostly uses Ethernet technology
 College , Hospitals , Hotels

22. WAN
 Wide area network
 Covers wide distances
 Links , continents , countries
 The INTERNET

23. MAN
 Metropolitan Area Network
 Connects campus
 Within one geographical location

24. PAN
 Personal Area Network
 Devices connect within personal reach

25. Intranet
 Within an organization
 Private
 Sharing of docs , and services within an organization
 Usually a site…..Intranet.gips.edu.bw

26. Extranet
 Extension of the intranet
 Allows outside people to access organization
resources
 Usually downloading files , not all the organization
resources

27. Communications In Computing
 Asynchronous vs. Synchronous
 Emails , Blog comments , SMS ,
 Both parties have to be available
 Skype , Phone , (Voip Technologies)

28. Central Processing Unit
 Computer part that out instructions
 Controls the rest of the computer RAM , Hardisk and
others

29. Components OF CPU
 ALU
 CU
 Memory/Primary Storage

30. Arithmetic Logic Unit
 Fundamental block of the computer
 Arithmetic and Logic Operations (OR , AND , XOR ,
NOT)
 Addition and negations
 Multiplication
 No subtraction …But Negation

31. CONTROL UNIT
 Handles the instructions contained in the
program
 Outputs are signals to the other parts of the CPU
and the rest of the computer

32. Types of processors
 Intel 404

33. Home Computing
 Popular begin in the late 70’s , Early 80’s
 Most famous is the Apple 2
 Used for simple gaming
 Simple Application software

34. Environments
 Applications areas where computers are found
 Home and office applications
 Gaming and home computing