Microcontrollers are divided into categories according to their memory, architecture, bits and instruction sets. Generally we use 8051 Microcontroller, PIC Microcontroller, AVR Microcontroller, AMR ...

Microcontroller port pins can typically be driven either high or low, or else be put into an "input" or high-impedance state. This circuit uses the three states to drive two separate LEDs with one ...

Eight-pin microcontrollers offer numerous peripheral features. However, the maximum number of I/O pins available is often limited to six, since two pins would be required for the chip's power supply.