The number of hardware interrupts present in 8085 microprocessor is :

Explanation:

The 8085 microprocessor is an 8-bit microprocessor produced by Intel in the mid-1970s. It is one of the most popular microprocessors used in a variety of devices due to its simplicity, ease of use, and robust features. One of the key features of any microprocessor is its ability to handle interrupts. Interrupts are signals that inform the processor that an external event has occurred, requiring immediate attention. There are different types of interrupts, including hardware and software interrupts. In the context of the 8085 microprocessor, hardware interrupts are particularly important as they allow external devices to request the processor’s attention asynchronously.

Correct Option Analysis:

The correct option is:

Option 1: The number of hardware interrupts present in 8085 microprocessor is 5.

This is the correct answer. The 8085 microprocessor has five hardware interrupt pins, which are:

• TRAP: This is a non-maskable interrupt with the highest priority. It is used for critical events that must be addressed immediately, such as power failure or emergency shutdown procedures. Once this interrupt is acknowledged, it cannot be ignored or masked by any other interrupts.
• RST7.5: This is a maskable interrupt with the second-highest priority. It is a restart interrupt and can be enabled or disabled using software instructions.
• RST6.5: This maskable interrupt has the third-highest priority. Like RST7.5, it can be controlled through software instructions.
• RST5.5: This is another maskable interrupt with a priority below RST6.5. It can also be managed using software instructions.
• INTR: This is a general-purpose maskable interrupt with the lowest priority. It is used for various applications and can be enabled or disabled through software instructions.

These hardware interrupts allow the 8085 microprocessor to handle multiple external events efficiently, ensuring that critical operations are performed without delay.