REQUIREMENTS FOR A LINE FOLLOWER

The robot must be capable of following a line.

It should be capable of taking turns.

The robot must be insensitive to environmental factors such as lighting and noise.

It must allow calibration of the line’s darkness threshold.

The color of the line must not be a factor as long as it is darker or brighter than the surroundings.

The output from the IR Sensors module is analog.The analog voltage can be Converted to digital (0 & 1) by :

•ANALOG TO DIGITAL CONVERTERS (ADC)

•COMPARATORS

Features of 8051 

•    RAM – 128 Bytes (Data memory)•    ROM – 4Kbytes (ROM signify the on – chip program space)•    Serial Port – Using UART makes it simpler to interface for serial communication.•    Two 16 bit Timer/ Counter•    Input/output Pins – 4 Ports of 8 bits each on a single chip.•    6 Interrupt Sources•    8 – bit ALU (Arithmetic Logic Unit)•    Harvard Memory Architecture – It has 16 bit Address bus (each of RAM and ROM) and 8 bit Data Bus.•   8051 can execute 1 million one-cycle instructions per second with a clock frequency of 12MHz.