Introduction to Computers and Programming Languages

1
Introduction to Computers and Programming
Languages
2
Hardware

• Typical view of a computer
• Components
• CPU
• Memory
• Storage
• I/O devices
• Communication devices

3
Software

• Crucial element
• Its what makes a computer useful
• Different kinds
• Operating System
• Applications
• Office applications
• Instant messenger
• Web browser

4
Programming Languages

• Machine Code
• Ones/Zeros
• Assembly Language
• Symbolic language
• Each CPU has its own version
• Assembler
• Translates into machine code

5
High Level Languages

• Abstract, English-like
• More flexible
• Procedural languages
• Fortran, Cobol, Pascal, Basic
• Script
• Problem solving
• Compiler
• Translates into assembler (machine code)

6
Object-Oriented Languages

• Event-Driven
• Built specifically to deal with complexity
• Code-reuse

7
Java

• Was designed for the Internet
• Safety
• Portability
• Simpler in Design than C
• Rich Library of Code
• General Purpose Programming

8
Java -- Student

• Not designed for students
• No thought given to making it really simple
• Certain amount of technical machinery is
  necessary
• Sometimes you will just have to take my word for
  it

9
Integrated Development Environment

• IDE analogous to a word processor
• Simple
• Notepad, TextPad, Crimson Editor
• Medium
• jGRASP, BlueJ, jEdit
• Complex
• Netbeans, Eclipse, Code-Warrior, jDeveloper

10
Typical Routine

• Login In
• Access Main-Space
• Write a simple program
• Save your work
• Compile
• Fix your errors
• Repeat until correct
• Logout