i want to interface the keyboard (one having 101 keys; attatched to PC) to the 8051... i've got only 7 unsed pins... is it possible to it uisng only 7 pins... if yes, how??? please give schematic, some source code or any other good tutorial... thx!!!
Here is an appnote from Philips. You just need to get the characters from the keyboard, not retransmit the codes over I2C. So you can just ignore that part, but the rest should be helpful.