Pumo Technovation India Embedded Engineer Interview Questions and Answers

Its is a easy question where everyone can answer if they know the basics

Q1. They asked about micro controllers
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Q2. Formula for frequency and how to calculate frequency in 8051
Ans. 
Frequency in 8051 is calculated using the formula: Freq = 1 / (2 * T * 12 * (65536 - TH0 + TL0))
• Frequency can be calculated by using the formula: Freq = 1 / (2 * T * 12 * (65536 - TH0 + TL0))

• T is the crystal oscillator period in seconds

• TH0 and TL0 are the values stored in Timer 0 registers

• Example: If T = 1/12 MHz, TH0 = 0x00, TL0 = 0xFF, then Freq = 1 / (2 * (1/12e6) * 12 * (65536 - 0x00FF))
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Q3. Why they call port 0 as no power port
Ans. 
Port 0 is called no power port because it does not have any power supply connected to it.
• Port 0 is typically used for communication purposes and does not provide power to connected devices.

• It is commonly found in microcontrollers and is designated for data transfer rather than power supply.

• Devices connected to port 0 may need to be powered separately to function properly.
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Q4. How to calculate voltage
Ans. 
Voltage can be calculated using Ohm's Law, which states V = I * R.
• Use Ohm's Law formula V = I * R, where V is voltage, I is current, and R is resistance.

• Measure the current flowing through the circuit using an ammeter.

• Measure the resistance of the circuit using a multimeter.

• Multiply the current by the resistance to calculate the voltage.

• For example, if the current is 2A and the resistance is 5 ohms, the voltage would b
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