PARTS

4-DIGIT 7-SEGMENT DISPLAY

Pins Layout

Any Common Anode 4-digit 7-Segment LED display can be used. However, their pins configuration may differ from PLTF-4401BS.

Understanding the 4-Digit 7-Segment Display
(Click on the signal logic for demonstration)
RESISTOR NETWORK CAPACITOR CODING

Take note that the DOT on the resistor module indicates pin 1 which is the common point.

SIP 9 = 9 pins, 8 resistors.

Example: Reading 103 = 10,000 ohms

1st & 2nd digit = Value of capacitor

3rd digit = mulitplier

Example: Reading 105 = 10,00000 pf
AT89S52 MICROCONTROLLER    



Take note of the orientation of the chip. More information of the ATMEL AT89C5131 is available at http://www.atmel.com