1. Introduction

2. Computer Programs Computers are complex yet simple machines
Capable of fantastic and complex tasks
Can do ONLY what they are instructed to do
Computer Program
List of instructions telling a computer exactly what to do

3. Computer Programs
Complex programs such as video games or a word processor require teams of programmers working on separate complicated tasks

4. Hardware/software Hardware Software
Physical components of a computer such as hard drive, keyboard, monitor, etc…
Software
Programs executed by the computer

5. Anatomy of a Computer CPU – Central Processing Unit Storage Networks
Heart of the computer
Locates and executes program instructions
Fetches data from external memory or devices
Storage
Primary- electric circuits. Require electricity
Secondary- utilizes magnetic material to store data
Networks
Allow computers to communicate with one another and share data

6. Java Machine code High level computer language Consists of 0’s and 1’s
Created to make it easier to write programs
Provides a framework to write understandable instructions for the computer
Translated to machine code by a compiler

7. Java
Originally developed in 1991 but did not become popular among programmers until 1995 due to its security and accessibility.
If a program attempts to do something unsafe for the computer, the program terminates
Programs run across any platform
Java Virtual Machine (byte code)

8. Let’s try to write a program