PLS 21 Notes (for MT1)

PLS 21 Notes (for MT1) - What are the Essential Parts of a...

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LECTURE 1 A few Examples of Computers in Your Daily Life Phone: land line and cell phones Vehicles (ignition timing, fuel mixture) Enrollment system at UCD Computer games Traffic flow (stoplights) Desktop computers (homework!) Delivery systems (USPS, UPS, FedEx) E-mail, texting, surfing the Web I-pod, other digital music systems Credit card charges What Can a Computer Do? • Very fast calculations • Reliable calculations • Store information • Retrieve information • Reliable storage and retrieval • Run a PROGRAM Receive inputs – Produce outputs What is a Computer? A devices that, under a program’s direction & control, performs four basic operations: IPOS I nput, P rocessing, O utput, S torage The single most defining characteristic of a modern computer is its ability to run programs
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Unformatted text preview: What are the Essential Parts of a Computer? – Hardware : The physical components of the computer (Motherboard, CPU, RAM, HD, etc.) – Software : The programs that run on the computer (BIOS, operating system, word processor, spread sheet). – The whole is more than its parts The Essential Parts • A‘BlackBox’ • Inputs • Outputs • Software (Programs) Input Something happens in here output What surrounds the ‘Black Box’? • Inputs – Keyboard – Mouse – Internet • WWW • E-mail – Scanner – Digital Camera – Sensors (GPS, RFID, weight, moisture, etc.) *Outputs – Flat screen – Projector – Printer (B&W laser) – Printer (Color Inkjet) – Speakers – Servo devices – Internet ( E-mail) *external memory-hard drive, flash drive...
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  • Spring '08
  • KAISER
  • Personal computer, Input/output, credit card charges, essential parts, digital music systems, flow (stoplights)

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PLS 21 Notes (for MT1) - What are the Essential Parts of a...

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