Info Way Solutions LLC Interview Questions and Answers

ADC in a microcontroller converts analog signals into digital values for processing.

• ADC stands for Analog-to-Digital Converter.

• It samples and quantizes analog signals to produce digital values.

• The microcontroller's ADC typically has a resolution, sampling rate, and reference voltage.

• The resolution determines the number of possible digital values.

• The sampling rate defines how often the ADC samples the analog signal.

• The reference voltage sets the maximum voltage that can be con...read more

Bit masking is a technique used in computer programming to manipulate individual bits within a binary number.

• Bit masking involves using bitwise operators to set, clear, or toggle specific bits in a binary number.

• It is commonly used for tasks like checking if a specific bit is set, extracting specific bits, or setting specific bits.

• Example: Using a bitwise AND operator (&) with a bitmask can check if a specific bit is set.

• Example: Using a bitwise OR operator (|) with a bitmask...read more

Interrupts are signals sent by hardware or software to interrupt the normal execution of a program.

• Interrupts are used to handle time-sensitive events or to communicate with hardware devices.

• They can be generated by hardware devices, such as a keyboard or mouse, or by software, such as an operating system.

• When an interrupt occurs, the current execution of the program is paused, and a specific interrupt handler routine is executed.

• Interrupts can be categorized as hardware inte...read more

The microcontroller was 32 bits.

• The microcontroller had a 32-bit architecture.

• This means it could process data in chunks of 32 bits at a time.

• Examples of 32-bit microcontrollers include the ARM Cortex-M series and the PIC32 series.

Interrupts are signals sent to the CPU to temporarily halt its current task and handle a higher priority task.

• Interrupts are used to handle events that require immediate attention.

• They allow the CPU to respond to external devices or events in real-time.

• Interrupts can be generated by hardware devices or software instructions.

• When an interrupt occurs, the CPU saves its current state and jumps to an interrupt handler routine.

• Once the interrupt is handled, the CPU resumes its pre...read more

Developed a machine learning model to predict stock market trends

• Used historical stock market data to train the model

• Implemented various machine learning algorithms such as linear regression and random forest

• Evaluated the model's performance using metrics like accuracy and precision

• Applied feature engineering techniques to improve the model's predictive power