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What is the function of 8255 chip?
- a)the ports of 8255 can act as the input/ output port for the micro controller
- b)it is a type of an external memory device that is being interfaced with the micro controller
- c)both of the mentioned
- d)none of the mentioned
Correct answer is option 'C'. Can you explain this answer?
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What is the function of 8255 chip?a)the ports of 8255 can act as the i...
8255 is an IC that is used to increase the number of input/output ports of a micro controller. As its ports offer an advantage of increasing the number of ports for interfacing external devices.
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What is the function of 8255 chip?a)the ports of 8255 can act as the i...
Function of 8255 Chip
The 8255 chip, also known as the Programmable Peripheral Interface (PPI), is a widely used integrated circuit that provides parallel input/output capabilities for microcontrollers and microprocessors. It is commonly used in various applications to interface with external devices.
Ports as Input/Output
One of the main functions of the 8255 chip is to provide ports that can act as input or output ports for the microcontroller. The chip has three 8-bit ports: Port A, Port B, and Port C. Each port can be configured individually as an input port or an output port.
When configured as an input port, the corresponding port pins can be used to receive data from external devices. The microcontroller can read the status of these pins to obtain information from the connected devices.
When configured as an output port, the microcontroller can send data to external devices by writing to the corresponding port pins. This allows the microcontroller to control various devices such as LEDs, motors, sensors, and other peripherals.
External Memory Device
The 8255 chip is not specifically designed as an external memory device. It does not have the ability to store data like a memory chip. However, it can be used to interface with external memory devices.
By using the 8255 chip, the microcontroller can communicate with external memory devices such as RAM or EEPROM. The chip provides the necessary control signals and data lines to facilitate the transfer of data between the microcontroller and the external memory.
Both of the Mentioned
In conclusion, the function of the 8255 chip includes acting as the input/output port for the microcontroller and interfacing with external memory devices. It allows the microcontroller to communicate with external devices and control them effectively. Therefore, the correct answer is option 'C' - both of the mentioned.
The 8255 chip, also known as the Programmable Peripheral Interface (PPI), is a widely used integrated circuit that provides parallel input/output capabilities for microcontrollers and microprocessors. It is commonly used in various applications to interface with external devices.
Ports as Input/Output
One of the main functions of the 8255 chip is to provide ports that can act as input or output ports for the microcontroller. The chip has three 8-bit ports: Port A, Port B, and Port C. Each port can be configured individually as an input port or an output port.
When configured as an input port, the corresponding port pins can be used to receive data from external devices. The microcontroller can read the status of these pins to obtain information from the connected devices.
When configured as an output port, the microcontroller can send data to external devices by writing to the corresponding port pins. This allows the microcontroller to control various devices such as LEDs, motors, sensors, and other peripherals.
External Memory Device
The 8255 chip is not specifically designed as an external memory device. It does not have the ability to store data like a memory chip. However, it can be used to interface with external memory devices.
By using the 8255 chip, the microcontroller can communicate with external memory devices such as RAM or EEPROM. The chip provides the necessary control signals and data lines to facilitate the transfer of data between the microcontroller and the external memory.
Both of the Mentioned
In conclusion, the function of the 8255 chip includes acting as the input/output port for the microcontroller and interfacing with external memory devices. It allows the microcontroller to communicate with external devices and control them effectively. Therefore, the correct answer is option 'C' - both of the mentioned.
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What is the function of 8255 chip?a)the ports of 8255 can act as the input/ output port for the micro controllerb)it is a type of an external memory device that is being interfaced with the micro controllerc)both of the mentionedd)none of the mentionedCorrect answer is option 'C'. Can you explain this answer?
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