The evoulution of Computers

• Abacus (2600 B.C.)
• Adding Machine (1642 A.D.)
• Slide Rule (1700 A.D.)
• Difference Engine (1821 A.D)
• Analytical Engine (1833 A.D.)

Range of Computer Ability

• Personal Digital Assistants (PDAs)
• Laptop computer and PCs
• Workstations
• Mainframe Computers

Computer Systems

• The Operating System
• Computer Memory
• The Bus
• Input Devices
• Tje centrel Processing Unit
• Output Devices

Computer Languages

• Machine Language
• Assembly Language
• High- Level Languages
• Object-Oriented Programming Languages