Lecturer: Kalamullah Ramli. Fundamental of Computer Engineering Departement of Electrical Engineering University of Indonesia. Microcontroller: Introduction. Outline. What is Microcontroller Microprocessor vs Microcontroller Some Types of Microcontroller MCS51 Features
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Fundamental of Computer Engineering
Departement of Electrical Engineering
University of Indonesia
A MicroProcessor is a general purpose machine while a MicroController is a dedicated machine
MicroProcessors need external RAM and ROM for a complete system; while most of the MicroControllers have built in RAM and ROMs ( Nowadays EEPROMs )
MicroProcessors cannot directly “talk” or interfaced to outside world; they need chips to do so e.g. 8255 for Parallel Communication and 8251 for Serial Communication (for Intel Systems). MicroController have dedicated ports for these interfaces e.g. Port 1 and RxD & TxD of 89C51