Abstract:
A microcontroller based electronic circuit designed
and constructed to do arithmetic logic unit (ALU) operation.
Sixteen switches are used as inputs by using LED indicators.
The output results are displayed with 8 LED indicators. PIC
16F84A used at 4*4 keypad encoder while PIC 16F877A is used
to perform ALU operation. The PIC BASIC PRO programming
language together with Micro Code Studio IDE package is used
to implement necessary software instruction into the
microcontroller. The number of Input / Output pins required for
the ALU is more than that of Input/ Output pin available in the
single microcontroller unit. Therefore, two microcontrollers are
used for this research work.
