ExpiredHandling interrupts,timers,and A/D converter in PIC16F877A

What is an interrupt; The PIC microcontroller sources of interrupts. ;

Things you should be aware of when using interrupts. ;

The steps to service an interrupt  request. ;

The general structure for the interrupt service subroutine.

CCS C Interrupt Functions.

RB0 interrupts examples;

RB4-RB7 interrupts examples.

What is a timer.; How to configure Timer0.;

software programmable prescaler.;

CCS timer0 built in functions;

Using timer0 to produce a given delay;

Programming Timer0 as a Counter.;

Using timer0 in the interrupt mode;

Analogue to digital conversion;

A/D control registers;

Making an A/D reading;

CCS C  analogue Input Functions