Lesson Plan

Reading / References

Read chapter 3 from Discovering Computers 2000 

Objectives

• Identify the components in the system unit and explain their functions

• Explain how the CPU uses the four steps of a machine cycle to process data

• Compare and contrast various microprocessors on the market today

• Define a bit and describe how a series of bits is used to represent data

• Differentiate between the various types of memory

• Describe the types of expansion slots and expansion cards in the system unit

• Explain the difference between a serial and a parallel port

• Describe how buses contribute to a computer’s processing and speed

Morning Coursework

• Chapter 3 Pretest
• Chapter 3 Overview (demo)
• Quiz #3

• Understanding the Motherboard (Interactive Lab) – pg 3.40

• Read pages 3.41 - 3.44 (how computer chips are made)

• Review Appendix A: Computer numbering systems (4 pages)

Afternoon Coursework

• At the Movies – pg 3.35   http://www.scsite.com/dc2000/default.cfm?module=movies&chap=3 
• Checkpoint – pg 3.36   http://www.scsite.com/dc2000/default.cfm?module=check&chap=3 
• At Issue: Read #1 through #5 - page 3.37
• Hands On – pg 3.39   http://www.scsite.com/dc2000/default.cfm?module=hands&chap=3 
• Net Stuff – pg 3.40   http://www.scsite.com/dc2000/default.cfm?module=stuff&chap=3 
• Check out #2
• Review Key Terms – pg 3.34

Lab Work

• Read chapter 3
• Work on homework

For Marks

Assignment #: DC05
Assignment: System Components (from page 3.36)
Due: Oct 12/99
Marks: 10 marks

1. What is the purpose of the CPU? What are registers?

2. How is instruction time, or I-time, different from execution time, or E-time? In what unit is a computer’s speed measured?

3. How are arithmetic operations, comparison operations, and logical operations different?

4. What are five special-purpose ports used in many of today’s computers? For what purpose is each port used?

5. How is a system bus different from an expansion bus? How is an internal drive bay different from an external drive bay?