The term microcomputer is used to describe a system
that includes at minimum a microprocessor, program memory, data memory, and an
input-output (I/O) device. Some microcomputer systems include additional
components such as timers, counters, and analog-to-digital converters. Thus, a
microcomputer system can be anything from a large computer having hard disks,
floppy disks, and printers to a single-chip embedded
controller.
In this course we are going to consider only the
type of microcomputers that consist of a single silicon chip. Such
microcomputer systems are also called microcontrollers, and they are used in
many household goods such as microwave ovens, TV remote control units, cookers,
hi-fi equipment, CD players, personal computers, and refrigerators.
Many different microcontrollers are available on
the market. In this lab we shall be looking at programming and system design
for the PIC (Programmable Interface Controller) series of microcontrollers
manufactured by Microchip Technology Inc.
A microcontroller is a single-chip computer. Micro
suggests that the device is small, and controller suggests that it is used in
control applications. Another term for microcontroller is embedded controller,
since most of the microcontrollers are built into (or embedded in) the devices
they control.
In this lab, we will be using PIC18F45K22 microcontroller.
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