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Interfacing Introduction - PowerPoint PPT Presentation
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Interfacing Introduction. Interfacing Overview. Computer. Peripheral. Interface. Wires ICs Resistors Capacitors Transistors Connectors. LEDs Motors Lights Robots Joystick Music Box. Parallel Port Pinout. Graphic from http://www.doc.ic.ac.uk/~ih/doc/par/. Output Table.
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Interfacing Introduction
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Presentation Transcript
Interfacing Overview
Computer
Peripheral
Interface
- Wires
- ICs
- Resistors
- Capacitors
- Transistors
- Connectors
- LEDs
- Motors
- Lights
- Robots
- Joystick
- Music Box
Parallel Port Pinout
Graphic from http://www.doc.ic.ac.uk/~ih/doc/par/
Turing: Preparing for Interfacing
- Turing is already prepared for interfacing with the parallel port
- No preparation necessary!
Turing: Turning On the LED
- Parallelput(value)
- Parallelput(1) turns on the 1 bit (D0)
- Parallelput(255) turns on all bits (D0-D7)
Turing: Turning Off the LED
- Parallelput(0)
Turing: LED Walking
loop
% loops up
for i : 0 .. 7
parallelput (2 ** i)
delay (500)
end for
% loops down
for decreasing i : 6 .. 1
parallelput (2 ** i)
delay (500)
end for
end loop
