Embedded Systems

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Embedded Systems

• ECE-445
• Computer Organization
• Dr. Ron Hayne
• Electrical and Computer Engineering

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Microwave Oven

• Cooking options
• Manual selection of power level and cooking time
• Manually selected sequence of cooking steps
• Automatic selection based on food type and weight
• Output display
• Clock
• Timer
• Messages
• Audio alert signal

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Microwave Oven

• Input keys
• Numbers 0 to 9
• Function keys
• Visual Output
• LCD
• Speaker

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Microwave Oven
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Digital Camera

• Array of optical sensors to capture images
• Pixels
• Analog-to-digital (A/D) conversion
• Processor to generate images in standard formats
• TIFF
• JPEG
• Storage
• Flash memory
• Display
• LCD

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Digital Camera

• Interface for transferring images to a computer
  or printer
• USB
• System controller
• Focus
• Flash
• Power consideration
• Battery powered

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Digital Camera
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Embedded Processor
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Example Microcontroller

• Parallel I/O ports
• Data (input or output)
• Direction
• Status
• Control
• Serial I/O interface
• Receive/Transmit
• Shift registers
• Data buffers
• Status
• Control

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Example Microcontroller

• Counter/Timer
• Initial value
• Count
• Status
• Control
• Interrupt Control
• Interrupt request lines
• Polling status flags
• Interrupt vectors

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Example Microcontroller
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Questions?