CGS1100: Introduction to Computers

Dr. Martin Hepp, mhepp@computer.org

Reading Assignment for Unit 6A: Interfaces

Read the following web pages. If you encounter difficulties, focus on the basic principles (some pages go too much into details). The potential quiz covers the respective fundamentals.

1. What is an interface?

An interface is the combination of a standardized connector (plug and its wiring/pinout) and a clear definition of what signals are being transmitted over this connection. This allows the use of external peripherals (devices) with any computer that has built-in the respective interface type. Very common is the parallel printer port or the Universal Serial Bus (USB).

2. Parallel Printer Port

http://computer.howstuffworks.com/parallel-port.htm/printable

3. Serial Port / RS-232

http://computer.howstuffworks.com/serial-port.htm/printable

4. Universal Serial Port (USB)

http://computer.howstuffworks.com/usb.htm/printable

In addition to that, you could also use www.google.com to find additional pages.