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Question by shivani
Submitted on 10/6/2003
Related FAQ: 8051 microcontroller FAQ
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how do i interface normal alpha-numeric keyboard to 8051/ 89s8252 microcontroller?


Answer by pras dhamal
Submitted on 2/18/2004
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i got a same question

 

Answer by MOSTAFA
Submitted on 10/26/2004
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YOU CAN BY PC KEYBOARD SEND ALL INFORMATION TO MICRO CONTROLLER TO EASILY BY FIVE LINE
1-CLOCK 2-TX 3-RX 4-VCC 5-VDD

 

Answer by Bob M. Johnson
Submitted on 11/3/2005
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I would also like to know how to interface a PS/2 keyboard and power it.  Funny, that keyboards have 8051 controllers in them...

 

Answer by chami
Submitted on 3/8/2006
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my favorite school

 

Answer by saga
Submitted on 9/1/2006
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just interface it to 8051 & forget about it

 

Answer by B.Raja
Submitted on 9/28/2006
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In PS/2 key board five pins are there vcc,gnd,clk,data. clk and data pins are connected to controller through any of ports. Read the status of clk pin. if you press any key clk pin goes low to high and you receive a bit. For each key press a sigle bit data is received. read 8 bits for each data, left shift and ORed to get a byte value that should be compared with look up table in ascii. and corresponding character we can get

 

Answer by somayeh
Submitted on 5/8/2007
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how do i interface normal alpha-numeric keyboard to 8051/ 89s8252 microcontroller?

 

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