Computer Hardware

1
Computer Hardware

• IT1001 Introduction to Computing

Tutor Miss Elizabeth Koh Email
diskre_at_nus.edu.sg Phone [phone] Office
Soc1-04-32 Consultation Wed 2-3pm, Thurs
1-2pm
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What we are covering

• Self-Introduction
• Name, Faculty, Year, Anything else?
• Why did you choose this course?
• Tutorial Expectation Grading Scheme
• Project
• Lecture Summary Tutorial MCQs (Part 1)
• Which computer should I get? (Part 2)

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Tutorial Expectation Grading

• Prepare Tutorial
• Be Punctual
• Be friendly and Interact!
• Handphones in silent mode
• Grading Scheme
• Tutorial (10)
• 4 attendance
• 4 participation (includes mini-assignments)
• 2 bonus

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Project

• To research on and gain an in-depth understanding
  of one of the emerging computing concepts or
  technologies
• 3-4 members per group
• Form groups during 2nd tutorial (by 3rd tut)
• Contributes to 30 of grade
• Deadline 31 October 2007
• Start looking for groupmembers now

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Summary of Lectures 1 2

• 1) Background of Computer
• - different types of computers
• - hardware versus software
• 2) Computer Hardware
• - How the computer stores information
• - Parts of the computer
• CPU and Motherboard
• Memory and Storage
• Buses Expansion Buses
• Peripherals
• Ports and Connectors

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A little history lesson
An Old Abacus
The Complex Number Calculator (CNC) (1939)
Harvard Mark-1 is completed in 1944
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Types of Computers
Computing Power
Size

• Support large organizations needs
• Supercomputer
• Mainframe
• Support work groups organizations needs
• Server
• Workstation
• Support individuals needs
• Desktop PC
• Notebook PC
• Handheld Computer
• Embedded Computer

MCQ Q12
8
Hardware Information

• How does the computer store information?
• Bits(b) and Bytes(B)
• 1B 8b
• 1KB 210 B 1024 B
• 1MB 210 KB 1024 KB
• 1 GB 210 MB 1024 MB
• Encoding systems (ASCII Unicode)

MCQ Q3
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Parts of a desktop computer
Show Tell
10
Parts of a typical computer (1)

• Motherboard mother of all boards
• main circuit board that all of the other internal
  components connect to
• CPU and memory are found on the motherboard
• Other systems may be found directly on the
  motherboard or connected to it through a
  secondary connection. E.g. a sound card can be
  built into the motherboard or connected through
  Peripheral Component Interconnect

• http//www.howstuffworks.com/pc.htm

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Parts of a typical computer (2)

• Central processing unit (CPU) The microprocessor
  "brain" of the computer system
• Everything that a computer does is overseen by
  the CPU
• Memory fast storage used to hold data
• Cache high speed storage located next to the
  core of CPU
• RAM Used to temporarily store information that
  the computer is currently working with
• ROM A permanent type of memory storage used by
  the computer for important data that does not
  change
• Classified into 2 types
• Primary directly connected to CPU
• Secondary Storage requires input/output channels
  to access info
• Hard disk large-capacity permanent storage used
  to hold data

MCQ Q4,5
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Parts of a typical computer (3)

• Buses circuits that connect one part of the
  motherboard to another
• information expressways
• the more data a bus can handle at one time, the
  faster it allows information to travel
• Many different types of buses in the motherboard

• http//www.howstuffworks.com/pc.htm

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Tut Qs Part 2

• Refer to the 5 desktop systems in your tutorial
  handout

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Tut Qs Part 2 Summary

• Performance of CPU is dependent on many factors
  (e.g. type of processor, clock speed, front side
  bus speed, software capability)
• Usually, the faster or larger (size) the
  component, the higher the performance and the
  price of the computer
• Ultimately, the PC you buy depends on your needs
  (or anticipated needs)
• Warning Price of computers seem to be dropping
  exponentially over time (Moores Law)

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Next Weeks Tutorial

• Check out IVLE announcements for location of the
  Lab
• Either PC Lab 1 or PC Lab 2
• All at SOC1, Level 8

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That wraps upComputer Hardware.Next week on
to Computer Software

• IT1001 Introduction to Computing

Thanks and see you next week! Slides and more
info _at_ http//www.comp.nus.edu.sg/ekoh/teaching.h
tm