The 89S52 has four different ports. Each one of the ports has eight input/output lines. The ports are used to output data.
To limit the amount of current to the ports
That depends on the specific microcontroller.
The PIC is a specific architecture of microcontroller.
to determine the state condition of microcontroller's input when microcontroller is reading the input port
Microcontroller having limited IO capacity and should not reliable in more changes in process.
The 89S52 has four different ports. Each one of the ports has eight input/output lines. The ports are used to output data.
The basic difference between the microprocessor and microcontroller is that we can interface a microcontroller directly means "for example we can directly connect a keyboard to microcontroller to any of its ports"....where as for microprocessor we can't interface directly...we require a circuit board since it requires ram,ic's.....etc.,! beyrojac mahinay
To limit the amount of current to the ports
COM and LPT PORTS
That depends on the specific microcontroller.
An Input/Output Panel, which can be found on either the front or back of your computer. This panel usually contains USB Ports and both audio- and microphone ports. In some cases there is a Firewire and/or eSATA connector as well.
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The PIC is a specific architecture of microcontroller.
The voltage of the 8031 microcontroller is 2.7V to 5.5V.
The 8051 Microcontroller is a microcontroller ("chip") developed by Intel in 1980.
PIC Microcontroller which means Peripheral Interface Controller. PIC Microcontroller is originally developed by General Instrument's Microelectronics Division.