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A microprocessor cant work as a stand alone unit.to make it work we have to interface memory and input out devices and so the PCB of microprocessor based system will be larger.Microcontroller consists of processor,memory and peripherals on a single chip and so needs no interfacing.Microcontroller can be programmed for any specific task.
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Why ULN2803 is not directly connected to a relay why it is connected to a relay via microcontroller?
You actually have that reversed. A microcontroller is connected to a relay via a ULN2803 (or other power device driver IC) because the output pins of the microcontroller can't drive relays. The ULN2803 darlington transistors provide the power amplification and the inductive kickback protection needed to drive the relay while only lightly loading the microprocessor output pins.
What is the name of the latest microcontroller in market?
what is the name of latest micro computer
Program to convert bcd to gray code using 8051 microcontroller.?
66666
How much voltage is required to energize the 8051 microcontroller?
The 8051 runs on +5vdc.
What is use of uln2003 in microcontroller based based tachometer?
ULN2003 is used where the current rating and voltage rating of a motor or any load which is to handled by microcontroller is more than the current handling and voltage handling capacity of that microcontroller. A pin of ULN2003 can handle 600 mA current. It can withstand voltage upto 50 volt. A pin of any microcontroller can handle current upto 200 mA and controller voltage is around 5 volt. So we use uln2003 in parallel to any microcontroller to drive heavy load devices. Uln2003 accepts TTL from MCU which may be 5v or 0v and depending on this value ULN2003 turns on the heavy load or turn it off respectively. for more inquiry mail me at grv_sh@yahoo.co.in
How is a microcontroller programmed?
That depends on the specific microcontroller.
Why external pull up resistor is needed at port 0 for AT89S52 microcontroller?
To limit the amount of current to the ports
Difference between Z86E04 microcontroller from PIC microcontroller?
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What is mean by pic in microcontroller?
The PIC is a specific architecture of microcontroller.
Why HLT instruction is not needed for microcontrollers?
There should be some process to stop the execution of a program.In microcontroller it is done by jumping to same location.
What is the voltage of 8031 microcontroller?
The voltage of the 8031 microcontroller is 2.7V to 5.5V.
What is microcontroller8051?
The 8051 Microcontroller is a microcontroller ("chip") developed by Intel in 1980.
What is the PIC Microcontroller?
PIC Microcontroller which means Peripheral Interface Controller. PIC Microcontroller is originally developed by General Instrument's Microelectronics Division.
When was Segger Microcontroller Systems created?
Segger Microcontroller Systems was created in 1991.
Why using pullup-resistors in 8051 microcontroller?
to determine the state condition of microcontroller's input when microcontroller is reading the input port
What is the difference between AVR microcontroller and pic microcontroller?
The difference is base on the requirement of their0 application.
Similarites between a microcontroller and a microprocessor?
Microcontroller = (microprocessor+memory+peripherals) on a single chip
