PIC
exercising board:
Year: 2004.
As you can see, this is very simple and very ugly. Very home-made.J But it has fitted the requirements.
I made it at home, for exercising the PIC programming. (against to forget)
Main parts:
-the PIC in a socket
-I2C LCD (from an old cellphone)
-keypad matrix, printed on the PCB.
-serial port
-extension connector
-one LED and one pushbutton
There is an IC socket in the circuit, which is compatible with several types of PIC microcontrollers. I tried the PIC16F877 and the PIC18F452