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Announcements

Announcements . Feb 14 - ESPN will be recruiting via video conference. A typical “hardware” standard. How do computers control the world?. Each joint is a motor that can be turned on and off with a switch. 7 switches to control a whole robot. A Computer “port”.

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Announcements

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  1. Announcements • Feb 14 - ESPN will be recruiting via video conference

  2. A typical “hardware” standard

  3. How do computers control the world?

  4. Each joint is a motor that can be turned on and off with a switch

  5. 7 switches to control a whole robot

  6. A Computer “port” • Connects 1 byte of memory to outside world

  7. A printer “Port” • Computer connects an internal byte variable to the printer switches, and changes the values to tell the printer what to print

  8. Address Data Memory r/w

  9. I/0 Memory Data Memory Program Memory Fast Specialty Memory

  10. Memory mapped I/O 8-bit Your Program Driver Port A Decimal Variable A Binary Value A function call

  11. an example program Private Sub Write_Port(value As Integer) txtByteOut.Text = (value) 'decimal Status = cbUSBDOut(DeviceNum, RELAY_PORT, value) If value < 16 Then txtHexOut.Text = "0" & (Hex(value)) Else txtHexOut.Text = (Hex(value)) End If ' hex txtBinary.Text = CBin(value) 'binary End Sub

  12. Optical Isolation

  13. motor, etc

  14. Computer “dirty” Environment

  15. Mechanical Relay

  16. Computer Environment

  17. Digital Input

  18. buying parts http://www.sparkfun.com

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