Evolution of Computer Technology

📋 Course Outline

1. Vacuum Tube Computers
2. Stored-Program Concept
3. Computer Generations
4. First Generation Devices
5. Second Generation Devices
6. Transition to Transistors
7. Memory Technologies
8. Programming Languages Evolution
9. Impact of Technological Advances

📖 1. Vacuum Tube Computers

🔑 Key Concepts & Definitions

• Vacuum Tube: An electronic device invented by Thomas Edison used for amplification and switching in early electronic devices, including computers. It controls the flow of electrical current through a vacuum within a glass tube.

• Stored-Program Concept: An innovation where both data and instructions are stored in a computer’s memory, allowing for easier programming, flexibility, and the ability to repeat instructions without rewiring the machine.

• ENIAC (Electronic Numerical Integrator and Computer): The first programmable digital computer, developed during WWII to calculate missile trajectories, and completed in 1946. It was significantly faster than previous calculators.

• First Generation Computers: Computers that used vacuum tubes for circuitry, magnetic drums for memory, and relied on machine language. They were large, expensive, heat-generating, and slow to reprogram.

• Transistor: A semiconductor device replacing vacuum tubes in second-generation computers, making machines smaller, faster, more reliable, and energy-efficient.

📝 Essential Points