Globant Interview Questions and Answers

Code for interfacing 8-bit and 4-bit CLCD with an embedded system.

• For 8-bit CLCD, use all 8 data lines (D0-D7) to send data to the display.

• For 4-bit CLCD, use only 4 data lines (D4-D7) to send data in two 4-bit nibbles.

• Ensure proper initialization and configuration of the CLCD controller in the code.

• Example: For 8-bit CLCD - send data using PORTA in AVR microcontroller. For 4-bit CLCD - send data using lower nibble of PORTB.

The meter may not be complete due to various reasons such as technical issues, human error, or lack of resources.

• Technical issues such as faulty equipment or software glitches could be causing the meter to not complete.

• Human error, such as incorrect data entry or miscommunication, could also be a factor.

• Lack of resources, such as insufficient training or inadequate staffing, may be hindering the completion of the meter.

CLCD stands for Character LCD. It is a type of display commonly used in embedded systems to show text and simple graphics.

• CLCD displays characters and symbols by controlling individual pixels on the screen

• It typically has a predefined set of characters stored in ROM, which can be displayed by sending corresponding ASCII values

• CLCDs are commonly interfaced with microcontrollers using protocols like I2C or SPI

• Commands are sent to CLCD to set cursor position, clear screen, displ...read more

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An interrupt is a signal sent to the processor to temporarily suspend the current program and execute a specific task.

• Interrupts are used to handle time-sensitive tasks or events in real-time systems.

• There are different types of interrupts such as hardware interrupts, software interrupts, and external interrupts.

• Examples of interrupts include timer interrupts, keyboard interrupts, and communication interrupts.

• Interrupts can be prioritized to ensure critical tasks are handled ...read more