3fourconcepts

3fourconcepts - faster, cheaper, smaller, and more reliable...

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CS101 Lecture 3 Four Important Concepts
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Four Important Concepts
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Concept 1: Computers are Stupid! Make you think they are smart by following directions really quickly.
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Concept 2: To be a computer a device must do four things. Input Information Input Devices Process Information Processor Output Information Output Devices Store Information Storage Devices
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Name that year! When was the first computer invented? 1820’s through 1840’s by Charles Babbage and Countess Ada Lovelace 1822 designed first mechanical computer
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Concept 3: Information needs to be in form of zeros and ones for a computer to process it. Information must be in the form of zeros and ones because the processor is make up of switches. Intel and Advanced Micro Devices are the two types of processors found in most Windows computers Switches in processor have two states: On and Off Off = 0 On = 1
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Four Generation or Processors When they figure out how to make processors in a different way that makes the processors
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Unformatted text preview: faster, cheaper, smaller, and more reliable a new generation of processors is born. First Generation 1939 1958 Vacuum tubes Second Generation 1958 1964 Transistors Third Generation 1964 1972 Integrated Circuit Forth Generation = 1972 -? Silicon Microprocessor Under 70 years from. . 17,000 switches in a room, failure every 2 minutes, 120,000 watts, three computers in the world to 225 million switches on a half inch chip, failures are rare, 90 watts, three computers in your car Name that year! When was the first modern electrical computer invented? 1939 Konrad Zuse Concept 4: Information moving around a modern computer is in electrical form Good Electrical energy moves fast Computers need to be fast Bad Lose power lose information Cool Stuff Presented in Lecture Computer history shows how quickly things change How did IBM blow it? How did Microsoft get it?...
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3fourconcepts - faster, cheaper, smaller, and more reliable...

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