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Question by rafiqued40006
Submitted on 3/8/2004
Related FAQ: 8051 microcontroller FAQ
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Can I directly connect LED's to the output ports (apart from port 0) of 89C52 or do I need to use transistors?

Answer by DIP
Submitted on 5/25/2004
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You need to connect to a Transistor (NPN) for each digit to be displayed.


Answer by Mahesh
Submitted on 2/25/2006
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For Atmel/Intel 8051 microcontroller basic tutorials

Tutorial include Interfacing examples of different circuits to 8051 like I/O Ports LED, Switch, Relay, RS232C Cell Phones, GPS receiver, 7-Seg. Display, LCD Display, ADC & DAC, Sensors, Stepper Motor, DTMF Decoder, Keyboard, External Memory with relevant theory, schematics and  sample codes  in Assembly language &  C language



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