Lecture-1
An Overview of Microprocessor:
Microprocessor is a controlling unit of a microcomputer, fabricated on a small chip
that contains millions of transistors connected by wires capable of performing
Arithmetic Logical Unit (ALU) operations and communicating with the other
devices connected to it, a multipurpose, clock driven, register based, digital
integrated circuit which accepted binary data as input, processes it according to
instructions stored in its memory, and provides results as output as shown in fig 1.
Typical microprocessor operations include adding, subtracting, comparing two
numbers, and fetching numbers from one area to another.
The microprocessor can be divided into three segments as shown in fig 2. ALU,
register array, and control unit.
