Presentation is loading. Please wait.

Presentation is loading. Please wait.

Keypad Encoding Using the EDE1144

Similar presentations


Presentation on theme: "Keypad Encoding Using the EDE1144"— Presentation transcript:

1 Keypad Encoding Using the EDE1144
Jeffery Betts jdb317 Presentation 21 November 6, 2002

2 High Level -Similar to keyboard decoder - Serial (2400 or 9600 Baud)
- Good for 4X4(16) or less keypads -Two operating modes - Serial (2400 or 9600 Baud) - Parallel

3 Keypad to Keypad Encoder

4 Timing diagram for keypad encoder

5 Basic Wiring Schematic

6 Links -ede1144 http://www.jameco.com/Jameco/Products/ProdDS/171969.pdf
-man seg disp -74LS48 -74LS173 Texas Instruments, TTL Logic Book Page2-575


Download ppt "Keypad Encoding Using the EDE1144"

Similar presentations


Ads by Google