1. Software comes from heaven when you have good hardware. Ken Olsen
Cosc 2P12 Week 1
Software comes from heaven when you have good hardware.
Ken Olsen

2. 2P12 Overview Course Website Course Outline Text Book is Digital
Course Requirements
Rules
No talking
Don’t be afraid to ask questions
Respect the class
Turn off cell phones

3. How to Pass 2P12 Come to lectures. Purchase the text book.
Free marks for the taking
Read the text and complete the exercises.
Go to labs. These have a tutorial component which will make life easy and act as a primer for the assignments.
Commit 10 hrs per week to the course.

4. How to Fail 2P12
Don’t come to class. The instructor posts the PowerPoint slides so the lectures are useless.
Don’t go to labs. Attendance is not taken, so why bother going?
Don’t read the text book. This stuff is boring.
Blow off assignments, because they are not worth much.
Or, start assignments the night before they are due.
Or, plagiarize assignments.
Party hard all term. Then try to cram ten week’s material into the day before the final exam.

5. Zybooks Online text book. Consists primarily of two parts:
Participation Activities (Learning) It is recommended these be completed prior to the lecture.
Challenge Activities (Testing) It is recommended these be completed after the lecture.
10% of your final grade will be based on these activities.

6. Participation Activities

7. Challenge Activities

8. Abstract View of a Computer

9. Compiler & Computer as Black Box

10. Assembly& Machine Language Abstraction

11. Generalized Computer Archetecture

12. General Registers in a Computer

13. Program Counter

14. Fetch Decode Execute Cycle
Data is acted upon based on the instruction.
Figure out what the instruction is, configure the cpu accordingly.
Start Here, Get instruction from memory

15. Cycle of Steps Fetch Instruction
Update Program Counter (Partial Decode)
Decode Instruction (Full Decode)
Load Operand(s)
May result in memory references
May use Regiters within the CPU
Execute Operation
Store Result

16. Instruction Set Architecture
The assembly level instructions which can be successfully decoded and executed.
Once decoded the execution engine will be either
CISC
RISC

17. RISC vs CISC

18. Base 10 numbers

19. Hex, Binary & Decimal

21. Base 16 Numbers

22. Base 8 Numbers

23. Base Conversion using Division

24. Binary to Decimal

25. Difficulties in Number Representation
finite size (number of bits) in a computer
e.g. 8 bit computer, +127 to -127
This is a magnitude problem
infinite number of integers
infinite # of rationals between any two integers
infinite # of irrationals between any two rational #
e.g. Pi =
This is a precision problem
infinite # of rationals between any two irrationals

26. Representing Fractions
Moving right from the radix point, each digit has decreasing weight of an additional factor of the base.
represents 5x x x x10-4
represents 1x x x x x2-5

27. Fraction Transformation Precision

28. End